A home appraisal is primarily driven by recent comparable sales and local market conditions, which means deferred maintenance, unpermitted work, outdated systems, and location factors can directly pull your final number below the contract price.
For a typical single-family home, the lender orders the appraisal and the buyer pays $300 to $600 for the report. The appraised value, not the contract price, sets the ceiling on how much the lender will fund. If the value comes in $20,000 low, the buyer must cover the gap out of pocket or you must reduce the price.
This guide covers what hurts a home appraisal the most, what do appraisers look for on every visit, home appraisal red flags by category, FHA appraisal requirements versus conventional standards, what would make a house fail an appraisal, what to tell (and not tell) an appraiser, how to prepare for a home appraisal in a prioritized cost framework, and what to do when the appraised value comes in low.
Home Appraisal
- What is a home appraisal?
- What hurts a home appraisal the most?
- What do appraisers look for?
- What are the red flags for home appraisal?
- What can hurt an FHA or VA appraisal?
- What would make a house fail an appraisal?
- What should you not tell an appraiser?
- How to prepare for a home appraisal
- What to do when your appraisal comes in low
- Frequently Asked Questions
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What is a home appraisal?
A home appraisal is a licensed professional’s formal opinion of a property’s market value, produced to protect the lender’s financial interest before a mortgage closes.
How appraisers determine market value
Appraisers hold a state license and operate under the Uniform Standards of Professional Appraisal Practice (USPAP), maintained by the Appraisal Foundation. The primary residential method is the sales comparison approach: the appraiser identifies at least three comparable sales from the same neighborhood, adjusts the subject property’s value for differences in size, condition, features, and location, and reconciles those adjusted values into a final opinion.
The appraised value becomes the lender’s underwriting ceiling. If your contract price is $400,000 and the appraisal returns $380,000, the lender bases the loan on $380,000. You and the buyer must negotiate around the $20,000 difference or the transaction stalls.
Who orders the appraisal and who pays for it
The lender orders and legally owns the appraisal report; the buyer typically pays the fee at closing, per federal appraisal disclosure rules. The seller does not commission the appraisal but bears the financial consequences if the value cannot support the contract price.
What hurts a home appraisal the most?
Ten factors consistently reduce appraised value. Each item below names the specific mechanism so you understand exactly what the appraiser documents and why it costs money.
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Deferred maintenance: Peeling exterior paint, a deteriorating roof, rotted wood trim, and broken gutters signal neglect. Appraisers assign a lower condition rating for visible neglect, and each step down generates a downward dollar adjustment.
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Unpermitted renovations: A converted garage or finished basement without a building permit is excluded from the legal gross living area (GLA) under Fannie Mae’s definition of gross living area. In some cases the lender requires the space to be returned to its original use before funding.
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Outdated electrical, plumbing, and HVAC systems: Knob-and-tube wiring, galvanized supply pipes, and HVAC system units over 15 to 20 years old generate downward condition adjustments. FHA and VA loans treat non-functional panels and inoperable HVAC as required-repair conditions, not simple value deductions.
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Undesirable location factors: Homes fronting arterial roads, under high-voltage transmission lines, adjacent to commercial or industrial zoning, or in high-crime neighborhoods carry permanent location adjustments. These are line-item deductions no pre-appraisal project can remove.
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Poor curb appeal and landscaping: Overgrown landscaping, cracked driveways, and peeling exterior paint reduce curb appeal and feed directly into the condition rating the appraiser assigns after the first exterior observation.
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Safety and health hazards: Visible mold, lead-based paint on homes built before 1978, exposed wiring, and missing GFCI outlets in wet areas are flagged in every appraisal report. FHA and VA appraisals treat these as required repairs rather than condition deductions.
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Structural problems: Foundation cracks, sagging floors, wall movement, or roof deck damage that suggests active structural shifting may require a structural engineer’s report before the loan can close. Structural issues at this level can pause or end a financed sale entirely.
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Pest damage: Active termite, rodent, or carpenter ant activity, and the structural damage left behind, lowers appraised value. VA appraisal guidelines require a pest inspection in termite-prone states; proof of treatment is required before loan funding.
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Weak comparable sales: If the three nearest comparable sales closed at lower prices than your contract, the appraiser’s adjustment math pulls your value down regardless of your property’s condition. You cannot change which comps are in the market, but you can document why your home differs favorably from them.
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Slow or falling market conditions: Declining sales volume and falling median prices in your ZIP code affect the market conditions adjustment appraisers apply to all comparable sales. A softening market makes it harder for any contract price to be fully supported by comp data.
What do appraisers look for?
Appraisers focus most heavily on comparable recent sales, overall physical condition, property size, and location when forming a value opinion.
Comparable sales: the anchor of every appraisal
The comparable sales grid is the foundation of every residential appraisal. Appraisers pull at least 3 comparable sales from the same neighborhood, typically sold within the last 6 months and within 1 mile, per Fannie Mae Selling Guide B4-1.3-08. Each comp is adjusted line by line for differences in size, condition, features, and lot characteristics. The adjusted values are reconciled into a final number.
Sellers who want to anticipate their comp pool can review the same publicly available data sources appraisers use. Researching local comparable sales through major real estate websites gives you a preview of which recent sales will most likely anchor your valuation before the appraiser arrives.
Physical condition and quality of construction
Condition follows the Fannie Mae UAD rating scale from C1 (new construction, never occupied) through C6 (substantial renovation or rebuilding required). Each step down generates a downward dollar adjustment calibrated to the local market. A home rated C4 (adequate, some deferred maintenance visible) versus C3 (well-maintained, minor wear) can represent thousands of dollars in adjustment depending on the comp pool.
Size, layout, and functional utility
GLA is measured from the exterior; only finished above-grade space counts in the primary GLA figure. Finished basement space is reported separately and valued at a lower per-square-foot rate. Non-conforming layouts, such as 4 bedrooms served by only 1 bathroom in a market where 4-bedroom homes typically have 2, receive functional utility deductions.
Location and neighborhood analysis
Proximity to good schools, employment centers, and services generates positive location adjustments. The reverse applies equally: busy roads, industrial adjacency, and declining neighborhood conditions create permanent negative adjustments that no renovation project can eliminate.
What are the red flags for home appraisal?
The main home appraisal red flags are structural problems, visible safety hazards, deferred maintenance, and unpermitted additions. Any one of these can trigger required repairs, reduce the condition rating, or exclude square footage from GLA.
Structural and foundation issues
Foundation settlement, sagging floors, or wall cracks suggesting active structural movement are among the most serious home appraisal red flags an appraiser can document. The appraiser may condition the report on a structural engineer’s inspection before the loan can close. Even stable, cosmetic cracks raise underwriter scrutiny and require documentation to resolve.
Health and safety hazards: mold, lead paint, exposed wiring
Visible mold is noted in every appraisal report; FHA requires remediation before closing under HUD Handbook 4000.1. Chipping or peeling paint on homes built before 1978 triggers a lead-based paint required-repair flag for FHA and VA loans, per EPA lead paint rules for home sales. Exposed wiring, missing GFCI outlets in wet areas, and double-tapped breakers are FHA/VA required-repair items regardless of current functionality.
Visible deferred maintenance
Peeling paint, missing handrails, rotted window sills, broken gutters, and non-functional exterior lights all qualify as deferred maintenance. The appraiser documents each visible deficiency and assigns a condition rating that reflects accumulated neglect. There is no dollar threshold: a $30 missing handrail and a $5,000 roof patch appear in the same condition narrative.
Unpermitted additions: the hidden GLA trap
A finished basement or converted garage without a permit is one of the most common home appraisal red flags sellers encounter without realizing it. The space is excluded from GLA, so the appraiser measures and reports a smaller home than was listed. In some loan scenarios the lender requires the non-permitted space to be returned to its original use before funding.
What can hurt an FHA or VA appraisal?
FHA appraisal requirements and VA appraisal standards are stricter than conventional standards because both programs are government-backed and require homes to meet minimum habitability, safety, and structural soundness criteria before a loan closes.
FHA Minimum Property Standards
HUD’s Minimum Property Standards, codified in HUD Handbook 4000.1, define every condition that triggers a required repair on an FHA loan. Any issue that threatens the health, safety, or security of an occupant requires correction and a re-inspection before the lender issues a final commitment.
Key FHA required repairs include: paint stabilization on all chipping or peeling surfaces in pre-1978 homes, missing handrails on stairs with 3 or more steps, inoperable HVAC, non-functional plumbing fixtures, and any active pest infestation.
VA Minimum Property Requirements: how they differ from FHA
VA minimum property requirements are documented in VA Pamphlet 26-7, Chapter 12. VA adds criteria that FHA does not impose: the roof must have at least 2 years of remaining useful life, working smoke detectors are required in all sleeping areas, and a pest inspection is mandatory in termite-prone states with proof of treatment required before funding. FHA appraisal requirements and VA standards overlap heavily, but VA’s pest inspection and roof life criteria are stricter.
Conventional vs. FHA vs. VA: a side-by-side comparison
| Issue | Conventional Standard | FHA / VA Standard |
|---|---|---|
| Peeling paint (pre-1978 home) | Noted; no mandatory repair | Required repair before closing |
| Missing handrails (3+ steps) | Noted; lender may condition | Required repair before closing |
| Broken or missing windows | Noted; no mandatory repair | Required repair (safety hazard) |
| Non-functional HVAC | Noted; condition deduction | Required repair before closing |
| Visible mold | Noted; lender may condition | Required repair (FHA and VA) |
| Active pest infestation | Noted; no mandatory repair | Required repair plus proof of treatment (VA: all termite-prone states) |
| Unpermitted addition | Excluded from GLA; noted | Excluded from GLA; lender may require reversal |
| Foundation cracks | Noted; structural report may be required | Structural report required before funding |
Based on HUD Handbook 4000.1 (FHA) and VA Pamphlet 26-7, Chapter 12 (VA). Verify current standards before transacting.
What would make a house fail an appraisal?
Appraisals don’t technically fail, but they can produce two outcomes that stop a financed sale: a value that comes in below the contract price, or required repair conditions the lender will not waive.
Appraisals don’t technically “fail”
There is no pass/fail grade on a residential appraisal report. What stops a transaction is either a value too low to support the loan or a condition the lender will not fund around. Understanding this distinction matters because each problem has a different solution.
When the appraised value comes in below contract price
If the appraised value is $20,000 below the contract price, the lender caps the loan at the lower figure. The buyer must pay the $20,000 gap in cash, or you must reduce the asking price. A 50/50 split is common when the gap is under $10,000 to $15,000. This outcome is governed by the appraisal contingency in the purchase agreement, which gives the buyer the legal right to exit the deal if the gap cannot be resolved.
When required repairs prevent the lender from funding
FHA and VA lenders will not issue final loan approval until the appraiser signs off on all required repairs. A re-inspection after repairs typically costs $100 to $200. This is a distinct problem from a low appraisal: a home may appraise above the contract price but still be unfundable because of a lead paint condition or a missing smoke detector. Conventional lenders have more flexibility and may waive minor conditions at their discretion.
A Reconsideration of Value (ROV) is available when the value comes in low but you believe the appraiser missed stronger comparable sales. Your lender submits documented comparable sales to the appraiser on your behalf; the appraiser must review them under USPAP Advisory Opinion 20 and issue a written response. The ROV process takes 3 to 5 business days at no additional cost. A second appraisal costs $300 to $600 out of pocket, though lender policy varies on whether it will be accepted.
What should you not tell an appraiser?
Never state a target value you need, cite online estimates as evidence of value, or suggest which comparable sales the appraiser should use. These statements are considered influence attempts under USPAP ethical standards.
Statements that count as influence under USPAP
USPAP ethical standards for appraisers prohibit appraisers from accepting assignments where compensation is tied to a predetermined value. Statements that trigger ethical review include: “I need it to appraise for at least $X,” “Zillow says it’s worth $Y,” “Use these comps instead,” and “Can you leave out that defect?” Inflating an appraisal to support a fraudulent loan is a federal crime under 18 U.S.C. § 1014.
Material defects: what you must disclose
You are legally required to answer the appraiser’s direct factual questions honestly. If asked about a past roof repair, a known foundation issue, or prior water intrusion, answer accurately. Concealing a material defect creates civil liability after the sale closes, and making a factual disclosure is not the same as directing the appraiser toward a lower value.
What you can and should share
The following information is factual, appropriate, and can support upward adjustments in the appraiser’s condition narrative:
- A one-page upgrade list with every improvement made in the past 10 years, the cost, and the completion date
- Permits and permit numbers for any additions, conversions, or major renovations
- Receipts for major system replacements (roof, HVAC, water heater) with dates
- HOA documents, monthly dues, and financial statements
- Any easements, deed restrictions, or survey records
Sharing documented upgrade information is not influence; it is factual data that the Uniform Standards of Professional Appraisal Practice explicitly permits appraisers to consider.
How to prepare for a home appraisal
The most effective way to prepare for a home appraisal is to address visible deferred maintenance in cost order, assemble documentation for all permitted work, and hand the appraiser a dated upgrade summary on the day of the visit.
- How to Prepare for a Home Appraisal
- Walk the property 2 to 4 weeks before the appraisal. Inspect the exterior and interior for peeling paint, dripping faucets, loose handrails, cracked windows, and any signs of moisture or pest activity. Build a prioritized defect list ranked by visibility and repair cost.
- Address cheap visible defects first (under $100). Touch up exterior and interior paint, replace burned-out bulbs, tighten loose handrails, caulk tub and sink surrounds, replace missing outlet covers, and mow and edge the landscaping. These items are directly visible to the appraiser and feed into the condition rating.
- Fix mid-range maintenance items where the ROI is clear ($100 to $500). Repair dripping faucets ($50 to $150), patch drywall holes ($30 to $150), replace cracked window glass ($75 to $200 per pane), and treat small visible mold areas with an appropriate remediation product.
- Service HVAC, plumbing, and pest systems ($500 to $2,000). Schedule an HVAC tune-up ($75 to $200) if the unit is aging; arrange a pest inspection and treatment ($150 to $500) if any activity is suspected. On older homes, review the sewer line inspection cost since plumbing defects are documented appraisal red flags. Homes on private wells should confirm water function; check well inspection costs since FHA and VA flag non-functional or contaminated wells as required-repair conditions.
- Assemble a documentation package. Collect permits for any renovations or additions, receipts for system replacements (HVAC, roof, water heater) with completion dates, HOA financial documents, and any survey or easement records.
- Prepare a one-page upgrade summary. List every improvement made in the past 10 years with the item name, estimated cost, and date of completion. Hand this to the appraiser at the start of the visit.
- On the day of the inspection: Confirm all systems are operational, all access points are clear (attic hatch, electrical panel, crawl space), and the home is clean and uncluttered. Answer the appraiser’s factual questions directly and never suggest a target value.
4 weeks out: assess and prioritize
Knowing what do appraisers look for in advance lets you triage your defect list before the clock runs out. Walk the property with the appraiser’s eyes and aim for a C3 condition rating: well-maintained with only minor wear. Budget under $100 for the first tier of quick wins.
2 weeks out: deferred maintenance ranked by cost and impact
Mid-range fixes ($100 to $500) address the items appraisers are trained to document. Dripping faucets, cracked window glass, patched drywall, and treated mold spots are inexpensive relative to the downward adjustments they prevent. Knowing how to prepare for a home appraisal at this tier means focusing on defects that are both visible and cheap to resolve.
The week before: documentation and day-of logistics
Document assembly is the highest-ROI activity in the final week. A permit for a permitted addition can restore square footage that was excluded from GLA. A dated receipt for a replaced HVAC system moves the unit’s age from “aging” to “recently replaced,” which lifts the condition narrative. All FHA appraisal requirements and VA conditions hinge on the appraiser’s ability to verify compliance directly, so every access point must be unlocked and accessible.
What is not worth fixing before an appraisal
A full kitchen or bathroom remodel rarely recoups its cost before an appraisal. Per NAR renovation cost-vs-value data, typical remodel return on investment at resale runs 60% to 80%. An appraiser gives partial credit for a high-end remodel but cannot appraise above what comparable sales support. A new roof carries similar math: high cost, partial appraisal credit. Spend the pre-appraisal budget on visible, inexpensive defects rather than major renovations.
What to do when your appraisal comes in low
A low appraisal gives you four concrete options. They differ in timeline, cost, and likelihood of success.
Request a Reconsideration of Value
Submit a Reconsideration of Value with at least three comparable sales the appraiser may have missed, plus specific evidence of why those sales are more relevant than the ones used. Your lender submits the ROV on your behalf; the appraiser must review it under USPAP Advisory Opinion 20 and issue a written response. For a full walkthrough of the process, see how a Reconsideration of Value works. The process typically takes 3 to 5 business days and costs nothing additional.
Renegotiate the purchase price
If the ROV does not move the value, you and the buyer can negotiate around the gap. A 50/50 split is common when the difference is under $10,000 to $15,000. Understanding features appraisers value most can help you identify specific line-item adjustments to challenge during renegotiation, such as whether the appraiser gave full credit for a recently replaced system or a renovated room.
Order a second appraisal
A second appraisal costs $300 to $600 out of pocket. Some lenders accept the higher value if it is well-supported; others require the lower of the two values. A second appraisal works best when the first used weaker comparable sales or missed a clear positive property feature.
Consider a cash sale to bypass the appraisal entirely
Cash buyers do not require a lender-ordered appraisal. If your home has deferred maintenance, unpermitted additions, or aging systems that make a strong appraisal unlikely, a cash sale eliminates the appraisal contingency and the renegotiation risk entirely. Cash offers through iBuyer.com’s marketplace typically close in 7 to 30 days with no repairs required.
If your home has deferred maintenance, unpermitted work, or aging systems, a traditional financed sale puts the outcome in the hands of the appraiser. A value that comes in low forces a price reduction, a cash gap payment from the buyer, or a deal that collapses. A cash buyer eliminates that uncertainty. Through iBuyer.com, you receive competing cash offers from vetted buyers, compare them side by side, and close in as few as 7 days with no repairs required and no agent commission.
Appraisal Issues Killing Your Sale? Cash buyers skip the appraisal — get competing offers without making repairs.
No repairs, no appraisal contingency, no agent fees.
Frequently Asked Questions
Appraisers weight comparable recent sales, overall property condition, location, and size, including square footage and bed/bath count, most heavily. An appraiser pulls at least 3 comparable sales from within roughly 1 mile, typically sold within the last 6 months, as the foundation of the valuation. Condition is rated on the Fannie Mae UAD scale from C1 (new) to C6 (substantial renovation required), and each step down generates a downward dollar adjustment. Location and site factors are applied as permanent adjustments on top of the condition rating.
Never state a target value you need, cite online estimates as fact, or suggest which comparable sales the appraiser should use. These statements are considered influence attempts under USPAP Ethics Rules and can be flagged as appraisal fraud. Stick to factual answers: the age of the roof, the date of HVAC replacement, and permit numbers for recent work. Handing the appraiser a one-page upgrade list with costs and completion dates is appropriate and can support upward adjustments.
A house does not technically fail an appraisal, but it can appraise below the contract price or require repairs before a loan closes. The two outcomes that stop a financed sale are a value that comes in low, forcing price renegotiation or a buyer-paid cash gap, and required repair conditions on FHA or VA loans that must be resolved before the lender releases funds. A leaky roof, exposed wiring, or active pest infestation can trigger required repairs even when the home would otherwise appraise at or above the contract price.
The main home appraisal red flags are structural problems, visible safety hazards, deferred maintenance, and unpermitted additions. Structural problems include foundation cracks, sagging floors, and roof damage. Safety hazards include mold, exposed wiring, and chipping lead-based paint on homes built before 1978. Deferred maintenance is any visible neglect the appraiser documents, from peeling exterior paint to missing handrails. Unpermitted additions are excluded from GLA and may require lender-mandated corrections before closing.
Unpermitted additions are excluded from the legal gross living area and may decrease appraised value if the work does not meet building code. A finished basement or converted garage without a permit is counted at zero square feet for GLA purposes under Fannie Mae guidelines. The lender may require the space to be returned to its original use before funding the loan. Pulling permits retroactively may restore the square footage, though availability and cost vary by jurisdiction.
Location factors including proximity to busy roads, crime rates, and school ratings are permanent appraisal adjustments a seller cannot change before the appointment. Appraisers apply negative adjustments for homes fronting arterial roads, within earshot of highway noise, adjacent to commercial zoning, or near industrial facilities. These adjustments appear as line-item deductions on the appraisal report. Understanding your location adjustments in advance helps you set a realistic asking price and anticipate whether the appraisal can support the contract price.
Outdated electrical wiring, galvanized plumbing, and HVAC systems over 15 to 20 years old typically generate downward adjustments on a home appraisal. FHA appraisal requirements treat non-functional electrical panels and inoperable HVAC as required-repair conditions, not just value deductions. Knob-and-tube wiring and galvanized pipes are flagged regardless of functional status because lenders consider them elevated insurance and maintenance risks. A licensed home inspector can help you assess whether a system upgrade is cost-justified before the appraisal takes place.
The physical inspection typically takes 30 minutes to 3 hours; the full written report arrives 3 to 10 business days later. Larger or more complex properties take longer to inspect and write up. Lenders typically order the appraisal within a few days of an accepted purchase agreement and require delivery before issuing a final loan commitment. Rush appraisals are available in some markets for an additional fee.
Yes, you can dispute a low appraisal by submitting a Reconsideration of Value with documented comparable sales the appraiser may have missed. The ROV must include at least three recent comparable sales with specific evidence of why they are more relevant than those the appraiser used. Your lender submits the ROV on your behalf; the appraiser is required to review it under USPAP Advisory Opinion 20. The process typically takes 3 to 5 business days and costs nothing additional.
A low appraisal typically forces a price reduction, requires the buyer to cover the gap in cash, or kills the deal entirely. If the appraisal comes in $15,000 below the contract price, the lender caps the loan at the lower figure, and the buyer must cover the $15,000 gap out of pocket or the seller must accept the reduced price. In a buyer’s market, sellers usually absorb most of the difference; in a seller’s market, buyers are more likely to pay the gap or negotiate a 50/50 split.
A home inspection assesses physical condition for the buyer’s information; a home appraisal determines market value for the lender’s underwriting decision. An inspection is ordered by the buyer and produces a condition report used to negotiate repairs. An appraisal is ordered by the lender and produces a value estimate used to set the maximum loan amount. Both cover physical conditions, but only the appraisal assigns a dollar value; a single-family home appraisal typically costs $300 to $600.
Extreme clutter can lower an appraised value by obscuring square footage, physical condition, and features the appraiser needs to observe. Appraisers are trained to evaluate condition rather than housekeeping, so a tidy home earns no “clean premium.” Heavy clutter that blocks access to mechanical areas, including the attic hatch, electrical panel, and crawl space, or that conceals visible damage, can result in a more conservative condition rating. A basic clean before the appointment costs nothing.
Complete all visible deferred maintenance, gather renovation permits, and prepare a dated upgrade list before the appraiser arrives. Prioritize exterior paint touch-ups, loose handrails, cracked windows, and dripping faucets: all cheap to fix and directly visible to the appraiser. Have documentation ready for any major system replacements (HVAC, roof, water heater) and any permitted additions. On the day of the visit, confirm all systems are operational, all areas are accessible, and answer the appraiser’s questions factually.
Reilly Dzurick is a licensed real estate agent with over six years of experience and a member of the iBuyer.com Market Insights Team, covering national trends in home selling and the evolving iBuyer landscape. Her firsthand experience working with buyers and sellers gives her a practical perspective on how these platforms impact real homeowners. She holds a degree in Public Relations, Advertising, and Applied Communication.
