Home Appraisal for Refinance: What Affects It and How to Prepare

When you refinance your mortgage, your lender typically requires a new home appraisal. This isn't a formality — the appraised value directly determines what you can borrow, whether you'll need to pay for private mortgage insurance, and sometimes whether you can refinance at all. For homeowners who've done significant improvements since purchase, this is good news. For homeowners in markets that have softened, it's a potential obstacle.

Understanding how a refinance appraisal works, what appraisers actually look at, and how to position your home for the best possible outcome gives you a meaningful advantage.

How a Refinance Appraisal Differs From a Purchase Appraisal

The appraisal process for a refinance is structurally the same as a purchase appraisal — a licensed appraiser visits the property, measures it, evaluates its condition, and compares it to recent comparable sales in the area to arrive at a market value estimate. The appraiser uses the same methodology and the same Uniform Residential Appraisal Report form.

The key difference is in the stakes and in who orders it.

For a purchase: The appraisal is ordered by the lender but triggered by a contract at a specific price. The appraiser's job is essentially to confirm that the price is supported by market data, not to arrive at an independent market value from scratch.

For a refinance: There's no contract price. The appraisal is the sole basis for the property's value. The lender uses the appraised value to determine your loan-to-value (LTV) ratio, which governs your loan options. If you owe $240,000 and your home appraises at $300,000, your LTV is 80% — the conventional threshold below which you avoid PMI. If it appraises at $250,000, your LTV is 96%, which affects the loan products you can access and your rate.

Who orders and pays: In a refinance, you as the borrower pay for the appraisal (typically $300–$600), even though you don't choose the appraiser. The lender selects from a panel of approved appraisers through an Appraisal Management Company (AMC) to ensure independence.

What Appraisers Evaluate

Appraisers use three methods, though for residential refinances, the sales comparison approach is primary.

Sales Comparison Approach: The appraiser selects 3–6 comparable sales ("comps") — homes similar to yours that have sold in the past 3–6 months within roughly a mile (more in rural areas). They adjust the comps upward or downward for differences in features: square footage, bedroom/bathroom count, garage, lot size, condition, upgrades, and amenities. The adjusted values of the comps bracket your home's estimated value.

Cost Approach: Estimates what it would cost to rebuild the structure from scratch, minus depreciation, plus land value. This is more commonly used for unique properties where comps are scarce.

Income Approach: Relevant for multi-family or investment properties. Not typically used for single-family owner-occupied refinances.

4 Factors That Affect Your Refinance Appraisal (Some Are Surprising)

1. Your Neighborhood's Recent Sales (More Than Your House Itself)

This is the factor most homeowners don't fully appreciate. An appraiser's opinion of your home's value is anchored to what similar homes in your area have actually sold for recently. If comparable homes in your neighborhood have been selling below their list prices, or if prices have dropped, your appraisal will reflect that regardless of what you've done to improve your property.

Conversely, if your neighbors have been selling for strong prices, your home benefits from that tide even if it hasn't been updated recently.

What you can do about it: Not much, directly — but it's worth pulling recent comparable sales yourself before the appraisal so you understand the market context. If the comps the appraiser uses are genuinely incomparable (different neighborhoods, significantly different size, unusual sale conditions), you can challenge the appraisal.

2. Unpermitted Improvements Can Hurt More Than Help

Adding a bedroom, finishing a basement, or enclosing a porch without permits is a common DIY move. The square footage may be real, the quality may be high, but appraisers are required to note unpermitted space. In many cases, unpermitted additions cannot be included in the home's total square footage in the appraisal. Worse, in some jurisdictions, unpermitted work can legally require disclosure to a future buyer and may have to be removed or brought up to code.

If you have unpermitted improvements, it may be worth retroactively permitting them before your refinance appraisal. The process varies by jurisdiction and can be straightforward for simple improvements or complicated for more significant ones.

What you can do about it: Check with your local building department before the appraisal. For improvements that can be quickly permitted, do it. For those that can't, at least know going in that they may not be credited.

3. Deferred Maintenance Is Penalized Twice

Appraisers rate condition on a scale (C1 through C6 in the standard FNMA guidelines, from new construction to requiring substantial renovation). Each step down in condition rating reduces your appraised value, sometimes significantly. But deferred maintenance also affects your comp adjustments — if your home requires maintenance and the comps don't, the appraiser adjusts downward.

The items that hurt most in appraisals are often the ones homeowners don't notice anymore: peeling exterior paint, a failing roof, cracked driveway, broken gutters, damaged flooring, water stains on ceilings, or broken fixtures. These signal to the appraiser (and to buyers) that the home has not been well maintained.

What you can do about it: Walk through your home with fresh eyes — or ask an honest friend to do it — before the appraisal. Prioritize visible maintenance issues. A fresh coat of exterior paint and a cleaned-up gutterline can shift a condition rating meaningfully. You don't need to renovate; you need to show that the home has been cared for.

4. Your Home's Square Footage Matters — But How It's Measured Matters More

Appraisers measure gross living area (GLA) themselves. They don't use the tax records, the MLS listing, or the square footage you think you have. GLA has specific rules: it includes only heated and cooled living space above grade. A finished basement, no matter how nice, is below grade and is not counted in GLA — it gets a separate line item with separate value.

Measurement method also matters. Appraisers use the ANSI standard for measurement. If your property was listed with a different measurement methodology, your official square footage may be lower than what you've been told.

What you can do about it: Review your tax records and any prior appraisals to understand the baseline. If the measurements seem low, you can politely raise the issue after receiving the report — but be prepared with specific arguments, not just a feeling that it should be higher.

How to Prepare for a Refinance Appraisal

Two weeks before:

• Address visible deferred maintenance: fix dripping faucets, replace burned-out light bulbs, repair cracked trim or caulking, touch up paint.
• Research recent comparable sales in your area so you understand the market context.
• Compile a list of improvements you've made since purchase, with dates and approximate costs. This becomes your "improvement summary" to hand the appraiser.

The day before:

• Clean the house — not to a showroom standard, but to a well-maintained standard. Clutter doesn't directly reduce value, but a clean, organized home signals good maintenance. Stacked boxes, overflowing closets, and general disorder can create a negative first impression.
• Make sure every room is accessible. Appraisers need to see every room, the attic access point, and the basement. A locked room, a storage pile blocking an attic hatch, or a door that won't open reads as a problem.
• Ensure all utilities are on. The appraiser will test plumbing and heating.

At the appointment:

• Hand the appraiser your improvement summary at the start. Be specific: "Kitchen renovation, 2023, approximately $28,000 — new cabinets, countertops, and appliances." Appraisers cannot credit improvements they're not aware of.
• Point out features that might not be obvious: a new roof, updated electrical panel, new HVAC system, or energy-efficient windows.
• Don't follow the appraiser room to room — give them space to work. Answer questions when asked.

What Happens If the Appraisal Comes In Low?

If the appraised value is lower than you expected, you have several options:

Request a Reconsideration of Value (ROV). This is a formal process where you or your lender provides additional comparable sales data that you believe the appraiser missed or underweighted. ROVs are not always successful, but they're your first recourse.

Order a second appraisal. You can pay for a second appraisal, though not all lenders will accept it. Some lenders have policies on this.

Bring cash to closing. If the appraisal is slightly lower than needed to achieve a specific LTV target, you can pay down the balance to reach your target ratio.

Wait. If the market is moving in your favor, or if you believe local sales will improve, waiting 3–6 months and refinancing then may result in a higher appraisal.

Switch lenders. Different lenders have different appraiser panels. A new loan application may result in a different appraisal.

The Refinance Process Beyond the Appraisal

A refinance follows a similar timeline to a purchase loan — typically 30–45 days from application to closing. The appraisal usually comes back within 7–14 days of being ordered. The rest of the time is spent in underwriting, processing, and the mandatory disclosure waiting periods.

When you close on a refinance, you'll need to sign a full new set of loan documents. You also have a 3-business-day right of rescission after closing on a refinance of your primary residence — during this window, you can cancel the transaction without penalty. Once the rescission period passes, the new loan is funded.

If you're refinancing because you're preparing to move — extracting equity for a down payment on the next house, for instance — plan the timing carefully. The refinance process needs to complete before you can use those funds.

For everything that comes after — whether you're moving from the home you refinanced or into a new one — a complete moving checklist with week-by-week timelines, packing guides, and address change resources is available at /moving-checklist/.

Understanding the appraisal is one piece. Preparing well for it is the part that's in your control.