What Appraisers Look for in a House: Your Complete Guide

If you are preparing to sell your home, refinance, or challenge a low valuation, understanding what does a house appraiser look for can save you thousands of dollars. Appraisers do not simply walk through your home and eyeball a number. They follow a structured process that weighs physical condition, comparable sales, location, and a range of property-specific factors. In South Florida, certain items carry extra weight: roof age, wind mitigation features, and aluminum wiring are the kinds of details that can move a value up or down by $20,000 or more.

The difference between what an appraiser measures and what they observe

Many homeowners assume an appraisal is mostly about square footage. Measurement is part of it, but it is a small part. Appraisers use the ANSI Z765 standard for gross living area. They physically measure the exterior of the home (or sometimes the interior room by room) and calculate heated, conditioned square footage. Garages, screened lanais, and unfinished bonus rooms do not count toward gross living area, even if they feel like living space to you.

Beyond measurement, appraisers observe condition across every major system and surface. They are not home inspectors, and they will not move furniture or open electrical panels. But they will note peeling paint, water stains on ceilings, missing handrails on stairs, and any visible sign of deferred maintenance. An appraiser who spots a roof with three layers of shingles or galvanized pipes in the utility room will flag both as deferred maintenance and adjust value accordingly.

Interior: what gets graded and why it matters

Kitchen and bathrooms

Appraisers use a condition and quality grid from Fannie Mae's Form 1004. Kitchens and bathrooms carry more weight than any other interior space. A kitchen that has been updated within the last 10 years with granite or quartz counters, cabinet refacing, and modern appliances will score significantly higher than a kitchen last touched in 2003. The same applies to bathrooms: tile condition, vanity age, and fixture quality all feed into the overall rating.

In Palm Beach and Broward counties, buyers expect a certain level of finish. An outdated kitchen in a neighborhood where comps show $60,000 gut renovations will drag an appraisal below market expectations, even if the home is otherwise well maintained.

Flooring, windows, and interior condition

Worn carpet is probably the single fastest way to drop a quality score. Hardwood, tile, and luxury vinyl plank (LVP) all read well. Cracked floor tile in a wet area raises a moisture question. Appraisers look at windows for functionality and condition, not just aesthetics. A broken window sash or a fogged double-pane unit is a functional deficiency, not a cosmetic one.

Fresh paint, clean surfaces, and working light fixtures communicate that a home has been maintained. That perception feeds directly into condition scores, which then influence how the appraiser makes adjustments against the comps.

Exterior: roof and foundation come first

Roof age and condition in Florida

In South Florida, the roof is the single biggest appraisal variable outside of square footage and location. Insurance companies here often refuse coverage on roofs older than 15 to 20 years, which means a buyer's lender may deny the loan. An appraiser will note the roof material, visible condition, and estimated age. Tile roofs typically carry a 25-year effective life. Flat membrane roofs on commercial-style homes are flagged more carefully.

A roof replacement in South Florida costs roughly $12,000 to $30,000 depending on size and material. If your roof is at or past its expected useful life, expect the appraiser to note it, and expect buyers' lenders to require repairs before closing. Replacing before you list eliminates that uncertainty entirely.

Foundation, paint, landscaping, and driveway

Florida homes are mostly slab on grade, which means visible foundation cracks are unusual but not unheard of. Horizontal cracks or cracks wider than a quarter inch are red flags. Hairline cracks along mortar joints are common and typically noted without adjustment.

Exterior paint condition matters more in a humid climate. Peeling or chalking paint can suggest moisture intrusion. Well-maintained landscaping and a clean driveway do not add much value on their own, but severe overgrowth or a cracked driveway chips away at curb appeal scores that do feed into the appraiser's overall condition rating.

Systems: HVAC, plumbing, and electrical

HVAC age and condition

A central air conditioning system in South Florida has an effective useful life of about 12 to 15 years. Appraisers note the age and condition. A system that is 17 years old will be flagged, and appraisers may apply a negative adjustment if comparable homes have newer systems. Having your HVAC serviced before the appraisal costs very little and demonstrates maintenance.

Plumbing

Galvanized steel pipes, which were common in homes built before the 1970s, are a known deficiency. They corrode from the inside, reducing water pressure over time. Appraisers will note their presence if visible. Copper and PEX piping score well. Polybutylene pipe, sometimes found in homes built between 1978 and 1995, is another flagged material because of a historical settlement over premature failures.

Aluminum wiring

This is a Florida-specific concern worth calling out separately. Aluminum branch circuit wiring was used widely from around 1965 to 1973 as a cheaper substitute for copper. It expands and contracts differently from copper, which can loosen connections at outlets and switches and create fire risk. Many insurance companies will not write a policy on a home with aluminum wiring unless it has been remediated with approved connectors (called CO/ALR devices or Copalum crimps). An appraiser who identifies aluminum wiring will note it. Buyers' agents in Palm Beach, Broward, and Miami-Dade should flag this during due diligence.

Comparable sales: the backbone of market value

Even a perfectly maintained home cannot appraise above what similar homes are selling for. Appraisers are required to find at least three closed comparable sales, ideally within the past six months and within one mile of the subject property. In dense urban markets like Boca Raton or Fort Lauderdale, that is usually achievable. In rural parts of Okeechobee or Highlands County, appraisers sometimes must go back 12 months or expand the radius to find adequate comps.

Appraisers make line-by-line adjustments for differences between the subject and each comp: square footage, bedroom count, garage size, pool, waterfront access, condition, and more. A pool in Palm Beach County adds somewhere between $20,000 and $40,000 in most neighborhoods, though that number varies widely by price tier and community.

Active listings and pending sales are considered for context but do not set value the way closed sales do. If your neighbor just listed for $50,000 more than the last sale in the area, that number means nothing to an appraiser until it closes.

Florida-specific: wind mitigation and insurance appraisals

South Florida is in a high-wind and hurricane exposure zone, which means wind mitigation features have both an appraisal value and a significant insurance value. Appraisers consider these features as part of overall quality and desirability. Items that matter include:

• Impact-resistant windows and doors (either impact glass or shutters)
• Hip roof geometry rather than gable, which performs better in wind events
• Roof-to-wall connections: single wraps, double wraps, clips, and structural anchors (like H2.5 or Strap) are rated differently
• Roof deck attachment: 8d nails at 6-inch spacing are preferred over staples

A wind mitigation inspection report can lower a homeowner's insurance premium by hundreds or even thousands of dollars per year. Buyers weighing total cost of ownership will factor that in. Appraisers may note these features but will typically reflect them through condition and quality scoring rather than as a separate dollar-for-dollar line adjustment.

How to prepare for an appraisal

You have more control than you think. Here is a practical checklist that covers the items appraisers notice most:

1. Pull permits for recent work. If you replaced the roof, added a bathroom, or finished a room without permits, the appraiser cannot count that square footage as gross living area, and the improvement may not count at all. Permitted work is creditable; unpermitted work can become a liability.
2. Document improvements with dates and costs. A spreadsheet showing your HVAC replacement date, kitchen remodel year, and water heater age gives the appraiser context to assign a higher effective age.
3. Handle visible deferred maintenance. Replace missing outlet covers, fix leaky faucets, touch up peeling paint, and address any ceiling stains. These take a few hours and a modest materials budget but can shift a condition score.
4. Clean and declutter before the appointment. Appraisers are professionals who should not be influenced by personal property, but a clean, well-presented home signals pride of ownership and makes the condition of surfaces visible.
5. Provide your own list of comps if you have done research. You can give the appraiser a list of recent sales you believe are comparable. They are not obligated to use them, but this is entirely appropriate and can help in areas with thin sale activity.
6. Be available but not hovering. Answer questions when asked, but let the appraiser work. Trying to narrate every feature can slow the process and may come across as pressure.

If the appraisal comes in below the purchase price, you have a few options: negotiate with the buyer to meet somewhere in the middle, dispute the appraisal with documented evidence of better comps, request a second appraisal from a different lender, or accept a cash offer that bypasses the lender requirement entirely. Use the home sale calculator to model your net proceeds under different value scenarios, and check your home value estimate before you list.

Frequently asked questions

How much does a home appraisal cost in South Florida?

A standard single-family home appraisal in Palm Beach, Broward, and Miami-Dade counties typically costs between $400 and $600. Larger homes, waterfront properties, or properties with unusual characteristics can run $700 to $1,000. The fee is usually paid by the buyer as part of the loan process, though sellers who want a pre-listing appraisal pay out of pocket.

Does a messy house affect an appraisal?

Personal clutter does not directly reduce appraised value. However, a very messy home can obscure the condition of surfaces, floors, and fixtures, which means the appraiser may not give full credit for things they cannot clearly see. A clean home is in your interest, even if it is just for practical visibility.

What is the difference between an appraisal and a home inspection?

A home inspection is a detailed examination of all visible systems and components, conducted for the buyer's benefit to identify defects. An appraisal is a professional opinion of market value conducted for the lender's benefit. Appraisers note obvious deficiencies but do not probe, test, or report on every system the way an inspector does. Both are typically required in a financed purchase.

Can I dispute a low appraisal in Florida?

Yes. You or your real estate agent can submit a written rebuttal to the appraiser through the lender, providing documentation of comparable sales you believe were overlooked, recent improvements, or factual errors in the report (wrong square footage, missing rooms). The appraiser is not required to change the value but must respond to a formal rebuttal. If the appraisal is for a refinance, you can also request a second appraisal from a different AMC (appraisal management company).

Does a pool add value to a home in South Florida?

Generally yes, though the dollar amount varies by county and price tier. In Palm Beach County, a pool typically adds $20,000 to $40,000 in appraised value in mid-range neighborhoods. In entry-level price points, a pool may add little because it is not standard in the comps. In luxury markets, a pool is often expected, so its absence can reduce value more than its presence adds it.

What happens if a home appraises below the sale price?

When a home appraises below the agreed purchase price, the lender will only finance based on the appraised value. The buyer must either make up the difference in cash, negotiate with the seller to reduce the price, or walk away if the contract has an appraisal contingency. Sellers in a strong market sometimes ask buyers to waive the appraisal contingency, which shifts risk to the buyer. An accurate closing cost estimate can help both sides model the financial impact before deciding how to proceed.