Home Improvements That Add Value: What Pays Back, What the Appraiser Counts, and What to Skip

They do. In the most recent national data, a midrange minor kitchen remodel recoups 113% of its cost in one survey and 60% in the other. On a $28,458 project, that is the difference between gaining about $3,700 and losing about $11,400 on paper. Both surveys ask real estate agents what a project adds at resale. Neither one measures a closed sale.

This guide puts the two surveys side by side, then covers how an appraiser actually records the work. Appraisers for most conventional loans measure square footage under a national standard that reports any partly below-grade space separately from above-grade living area, however nicely it is finished. A basement room marketed as a bedroom without a code-compliant escape window can turn into an inspection problem rather than a selling point. And the federal tax credits for energy-efficient upgrades have ended for new projects.

We also cover the cheapest value-add of all, which real estate agents recommend more than any renovation: getting things out of the house. We run storage facilities, and near the end we walk through when a unit helps during a renovation and when it is money you do not need to spend. For several of the best-scoring projects in this guide, the honest answer is that you will not need one.

Table of Contents

1. What “Adds Value” Actually Means: Two Surveys, Two Answers
2. The Exterior Replacements That Top Both Lists
3. Kitchens and Bathrooms: Why the Smaller Project Wins
4. How Appraisers Count Square Footage After a Remodel
5. Bedrooms and Egress Windows: When a New Room Counts
6. Permits and Unpermitted Work
7. Energy Upgrades: Real Value, Expired Federal Credits
8. The Projects That Rarely Pay Back (and When to Do Them Anyway)
9. The Cheapest Value: Decluttering, Cleaning, Paint, and Curb Appeal
10. How to Choose by Timeline: A Worked Budget
11. Where Your Belongings Go During a Renovation
12. When You Do Not Need a Storage Unit for a Renovation
13. Frequently Asked Questions About Home Improvements That Add Value
14. Spend Where the Buyer and the Appraiser Both Look

What “Adds Value” Actually Means: Two Surveys, Two Answers

The return figures in this guide come from two national reports. Knowing how each is built tells you how much weight to put on its numbers.

The Cost vs. Value Report

Zonda’s annual Cost vs. Value Report, published through the Journal of Light Construction and Remodeling magazine, tracks 28 defined projects across 119 U.S. markets. Its 2025 edition was the most recent on the publisher’s site when this guide was written. Costs are modeled: the team builds price indexes from Bureau of Labor Statistics and Bureau of Economic Analysis data, then localizes them with construction cost data from Verisk’s XactRemodel estimating software. Value comes from an online survey of more than 6,000 Realtors, who were shown project descriptions, photos, construction costs, and local median home prices, then asked what each project would add to a home’s sale price.

The Remodeling Impact Report

The National Association of Realtors and the National Association of the Remodeling Industry publish the second report. Its 2025 edition pairs cost estimates from a survey of NARI remodelers with Realtors’ estimates of resale value, and adds a homeowner “Joy Score” from 1 to 10 for satisfaction with the finished project.

What “cost recouped” does and does not tell you

Cost recouped is the estimated resale value divided by the project cost. It is not profit, and it is not a percentage increase in your home’s value. Three examples from the 2025 Cost vs. Value national averages show why the dollars matter more than the percentage:

• Garage door replacement: $4,672 cost, $12,507 estimated resale value, 268% recouped. On paper, about $7,835 more than the job cost.
• Minor kitchen remodel, midrange: $28,458 cost, $32,141 estimated value, 113% recouped. About $3,683 ahead, despite a far larger check.
• Major kitchen remodel, upscale: $164,104 cost, $58,561 estimated value, 36% recouped. About $105,543 behind.

None of these numbers is cash in hand. They are agents’ estimates of what buyers would pay, and they only matter on the day you sell.

Where the surveys agree, and where they split

Project definitions are not identical between the two reports, so treat this as a rough comparison rather than a matched pair. Even so, the pattern is useful:

• Vinyl windows: 76% (Cost vs. Value) and 74% (NAR). Close agreement.
• Wood windows: 70% and 71%. Close agreement.
• Basement remodel or conversion to living area: 71% in both.
• Bathroom addition: 53% (midrange) and 56%. Close agreement.
• Steel entry door: 216% and 100%. A wide split, though both put it at or near the top.
• Minor kitchen work: 113% and 60%. A wide split.
• Bathroom remodel or renovation: 80% (midrange) and 50%. A wide split.
• Primary suite addition: 32% (midrange) and 54%. Here the NAR figure is the higher one.

A sensible way to use this: where the two surveys land within a few points of each other, the number is about as reliable as national data gets. Where they split, the project’s value depends heavily on what buyers in your area expect, and the lower figure is the safer planning number. The Cost vs. Value Report also publishes regional and city figures, and the next section shows how much those can move.

The Exterior Replacements That Top Both Lists

The most consistent finding in remodeling data is that small, visible, standardized exterior replacements recover the largest share of their cost. In the 2025 Cost vs. Value national averages, the midrange minor kitchen remodel is the only interior project in the top ten, and the top three more than doubled their cost:

• Garage door replacement: $4,672 cost, 268% recouped.
• Steel entry door replacement: $2,435 cost, 216% recouped.
• Manufactured stone veneer: $11,702 cost, 208% recouped.
• Fiber-cement siding replacement: $21,485 cost, 114% recouped.
• Vinyl siding replacement: $17,950 cost, 97% recouped.
• Wood deck addition: $18,263 cost, 95% recouped.

Zonda’s analysts point to a small, selective pool of buyers and to how subjective large interior remodels are. Exterior replacements are less a matter of taste, and buyers judge them before the front door opens. A new garage door photographs well, reads as maintenance done, and does not ask a buyer to share your opinion on tile.

Your region can move the numbers a lot

National averages flatten big local differences. A few 2025 Cost vs. Value figures from regions where many of our customers live:

• Garage door replacement: 268% nationally, 227.7% across the South Atlantic region, 210.6% in the East South Central region, and 193.4% in Columbia, South Carolina.
• Steel entry door replacement: 216% nationally, 219% in the South Atlantic region, 233.9% in the West South Central region, and 157.2% in Atlanta.
• Minor kitchen remodel, midrange: 113% nationally, 109.2% in the South Atlantic region, 117.3% in the West South Central region, and 104.7% in the East South Central region.

The ranking holds in each case, but the size of the return does not. Before you budget around a national number, look up the closest city in the report. And remember why these projects score well: they are cheap, and they pay only when the part you are replacing is visibly worn.

Kitchens and Bathrooms: Why the Smaller Project Wins

Kitchens and bathrooms are where buyers look hardest and where homeowners spend the most, which is exactly why they produce the widest gap between what you pay and what you get back. The 2025 Cost vs. Value national averages show the pattern clearly:

• Minor kitchen remodel, midrange: $28,458 cost, 113% recouped.
• Major kitchen remodel, midrange: $82,793 cost, 51% recouped.
• Major kitchen remodel, upscale: $164,104 cost, 36% recouped.
• Bath remodel, midrange: $26,138 cost, 80% recouped.
• Bath remodel, universal design: $42,183 cost, 61% recouped.
• Bath remodel, upscale: $81,612 cost, 42% recouped.

The minor kitchen project in the report is a refresh of a functional but dated kitchen, not a gut job: new cabinet fronts, countertops, appliances, and flooring, plus fresh paint, without changing the layout. Moving walls, plumbing, and gas lines is where costs climb faster than any buyer will follow.

What the appraiser writes down about these rooms

There is a structural reason kitchens and baths show up in value. Appraisals for loans sold to Fannie Mae and Freddie Mac rate a home’s condition on a standardized C1 to C6 scale and its construction quality on a Q1 to Q6 scale. Kitchens and bathrooms get their own line of reporting. Under the long-running appraisal format, appraisers recorded whether each had been updated or remodeled within the past 15 years. The redesigned appraisal report, required for new appraisals on loans sold to Fannie Mae and Freddie Mac starting November 2, 2026 (with a temporary exception for some lenders), goes further. It records the update status, the time frame, and a condition status for each kitchen and bathroom individually.

In practical terms, a dated kitchen that gets new surfaces, fixtures, and appliances changes what the appraiser records. A single high-end appliance in an otherwise untouched kitchen changes far less.

Do not out-build the street

A kitchen or bath that is far nicer than anything else in the neighborhood rarely gets paid for in full, because appraisers value homes against recent nearby sales. If the comparable homes on your street have laminate counters and builder-grade cabinets, a $160,000 kitchen is a bet that the next buyer will pay a premium no recent buyer has paid. The NAR report’s top-ranked kitchen and bath projects tell the same story from the other direction: a minor kitchen upgrade recovers the same 60% share of its cost as a complete renovation, and the minor project takes that share from a much smaller check.

How Appraisers Count Square Footage After a Remodel

Adding finished space is one of the most common ways homeowners try to raise a home’s value. An appraiser for most conventional mortgages does not count every finished square foot the same way, and the rules are written down.

The ANSI standard

Fannie Mae requires appraisers to measure single-family homes, townhomes, and accessory dwelling units under the American National Standards Institute’s square footage standard, ANSI Z765-2021. Freddie Mac has adopted the same standard. A few of its rules decide whether a renovation adds to the headline square footage or lands on a separate line of the report:

• Below grade means below grade. Any level that is partially or completely below ground is reported as below-grade area, regardless of how well it is finished or how large its windows are. Fannie Mae defines a level as partially below grade if any portion of its walls is not entirely at or above ground.
• Ceilings need 7 feet. Finished areas must have a ceiling height of at least 7 feet. In a room with a sloped ceiling, at least half the finished floor must have 7 feet of height, and no part of the finished area can be under 5 feet.
• Access matters. A finished room that fails the ceiling rule, or that you can only reach by walking through unfinished space, is reported separately as nonstandard finished area.
• Open-to-below space does not count. A two-story foyer or other opening to the floor below is excluded from the floor above.
• Measurements are exterior. Houses are measured to the outside walls, to the nearest inch or tenth of a foot.

The redesigned appraisal report reflects this split directly: above-grade finished area, below-grade finished and unfinished area, and nonstandard finished area each get their own entries.

What that means for basements and attics

A finished basement can add real value. Both national surveys put a basement remodel or conversion at about 71% of cost recouped. But it adds that value as below-grade finished area, valued by the appraiser against what local buyers pay for finished basements, not as additional above-grade living area. Fannie Mae is explicit that following the standard does not by itself raise or lower a home’s value; the appraiser still makes market-based adjustments, and those can be greater than, less than, or equal to the value of above-grade space.

Attic conversions run into the ceiling rule. A knee-walled room under a steep roof may feel like a bedroom and still be reported as nonstandard area if too much of it is under 7 feet. If you are planning one, measure the headroom before you design the room, not after. Our guide on remodeling an attic for storage covers the structural load question that comes first in any attic project.

Bedrooms and Egress Windows: When a New Room Counts

Bedroom count is one of the first filters buyers apply in a listing search, which makes “add a bedroom” a popular idea. It is also where a renovation can look finished and still fall short of what the code expects for a sleeping room.

The escape opening rule

The International Residential Code, which most states and municipalities adopt with local amendments, requires an emergency escape and rescue opening in every sleeping room, and in basements with habitable space. Where a basement contains bedrooms, each one needs its own. In most adopted versions of Section R310, that opening must have:

• Net clear opening area: at least 5.7 square feet, with 5.0 square feet permitted for grade-floor openings, and for below-grade openings in newer editions.
• Net clear height: at least 24 inches.
• Net clear width: at least 20 inches.
• Sill height: no more than 44 inches above the finished floor.
• Window well, if the sill is below ground: at least 9 square feet of floor area, with at least 36 inches of horizontal projection and width.

The arithmetic that catches people

The minimums do not combine the way they look. A window that is exactly 20 inches wide and 24 inches tall opens 480 square inches, which is about 3.3 square feet, well under the 5.7 required. The 5.7-square-foot minimum works out to 820.8 square inches, so:

• At the minimum 24-inch height, the opening needs to be about 34.2 inches wide.
• At the minimum 20-inch width, it needs to be about 41 inches tall.

And that is the clear opening when the window is open, not the size of the frame. A casement window that swings fully open usually gets closer to its rough size than a slider, which only opens half its width.

Why this matters for value

A basement room without a compliant opening is, under the code, not a sleeping room. Whether a listing can call it a bedroom, how an inspector flags it, and how an appraiser treats it all follow from that. Local amendments vary, and some states have modified these dimensions, so confirm the requirement with your building department before you buy a window or cut a foundation wall.

Permits and Unpermitted Work

Permits feel like paperwork until the day you sell. Then they become evidence.

Fannie Mae’s appraisal rules take a measured position. An addition without a required permit does not, by itself, make a home ineligible for a conventional loan. Instead, the appraiser must comment on the quality and appearance of the work and on its impact, if any, on the home’s market value. That puts the burden where it belongs: on whether comparable sales show buyers paying for similar space. Unpermitted work is not automatically worth zero, but it is worth only what the appraiser can support, and a buyer’s inspector, lender, or insurer may ask harder questions than a finished room would otherwise draw.

Seller disclosure obligations for unpermitted work vary by state, and so do the remedies when work is discovered later. A real estate attorney or your agent can tell you what your state’s disclosure form asks. What does not vary is that a closed permit, an inspection record, and a contractor’s invoice are the easiest way to show a buyer, an appraiser, and later the IRS what was done and when.

Work that commonly needs a permit includes structural changes, additions, new or relocated plumbing and electrical circuits, new window or door openings in exterior walls, and finishing a basement or attic into living space. Cosmetic work such as painting, flooring, and cabinet refacing usually does not. Requirements are set locally, so a short call to your building department before the contractor starts is the cheapest insurance in the whole project.

Energy Upgrades: Real Value, Expired Federal Credits

Energy efficiency is one of the most common reasons people remodel. In NAR’s survey, improving energy efficiency was the second most common motivation for remodeling, cited by 19% of consumers, behind upgrading worn-out finishes at 27%. The resale side is more mixed. From the 2025 Cost vs. Value national averages:

• Backup power generator: $13,534 cost, 95% recouped.
• Vinyl window replacement: $22,073 cost, 76% recouped.
• HVAC conversion to an electric heat pump: $19,484 cost, 72% recouped.
• Wood window replacement: $26,781 cost, 70% recouped.
• Solar power installation: $55,937 cost, 30% recouped.

These are resale estimates only. They leave out what you save on utility bills while you live in the home, which is the main case for most efficiency projects and depends on your climate, rates, and current equipment.

Federal energy tax credits have ended for new projects

Federal credits for windows, insulation, heat pumps, and solar were cut short by Public Law 119-21, enacted July 4, 2025. According to IRS guidance:

• Energy efficient home improvement credit (Section 25C): not allowed for any property placed in service after December 31, 2025.
• Residential clean energy credit (Section 25D): not allowed for any expenditures made after December 31, 2025. The IRS treats the expenditure as made when installation is completed, so paying in advance for a system installed later does not preserve the credit.

If a contractor’s quote builds a federal credit into the math for a new project, ask where it comes from. Some state energy offices and utilities run their own rebate programs, and those change often. A tax professional can tell you whether anything applies to work you completed before the cutoff, and your state energy office or utility can tell you what exists now.

The Projects That Rarely Pay Back (and When to Do Them Anyway)

At the bottom of the 2025 Cost vs. Value national averages sit the large, custom, discretionary projects. The percentages are low, and because the checks are large, the dollar gaps are larger:

• Primary suite addition, upscale: $351,613 cost, 18% recouped, about $288,000 behind on paper.
• Primary suite addition, midrange: $170,517 cost, 32% recouped.
• Major kitchen remodel, upscale: $164,104 cost, 36% recouped.
• Bathroom addition, upscale: $111,255 cost, 36% recouped.
• Accessory dwelling unit: $166,406 cost, 41% recouped.
• Bath remodel, upscale: $81,612 cost, 42% recouped.
• Backyard patio: $51,454 cost, 46% recouped.
• Metal roof replacement: $51,865 cost, 50% recouped.

Two of these deserve a closer look. An accessory dwelling unit’s resale value depends heavily on whether local zoning lets it be rented, which a national survey cannot capture, and appraisers measure it under the same ANSI standard as the main house. A metal roof’s low percentage reflects its high upfront cost against an asphalt roof that most buyers consider good enough. If your roof needs replacing anyway, the asphalt version recoups 68% and removes an inspection objection.

The Joy Score is a fair reason to build anyway

NAR’s report asked homeowners how they felt about finished projects and scored the answers from 1 to 10. Three projects earned a perfect 10: adding a primary bedroom suite, a kitchen upgrade, and new roofing. The primary suite is near the bottom for cost recovery and at the top for satisfaction. NAR’s deputy chief economist described the gap between how a project feels and what it recovers as one of the report’s most interesting findings.

That gap is the real decision. If you plan to stay for many years, the years you spend enjoying a project count for something no resale survey measures. If you plan to sell within two years, the bottom of this list is where budgets quietly disappear.

The Cheapest Value: Decluttering, Cleaning, Paint, and Curb Appeal

The most commonly recommended pre-sale improvements are not renovations at all. In NAR’s Profile of Home Staging, a survey of about 1,200 Realtors, the top recommendations agents gave sellers were decluttering the home (91%), cleaning the entire home (88%), and improving curb appeal (77%). In NAR’s remodeling report, the projects agents most often recommended sellers complete before listing were painting the whole home or at least one room, and a new roof where one is needed.

What the staging data says, and where it disagrees

The same staging survey shows how hard it is to put a number on presentation:

• Roughly three in 10 agents (29%) reported that staging increased the dollar value offered by 1% to 10% compared with similar unstaged homes.
• 41% of buyers’ agents said staging had no impact on the dollar value offered.
• 83% of buyers’ agents said staging made it easier for buyers to picture the property as their future home.
• The median cost of a staging service was $1,500, compared with $500 when the seller’s agent handled staging.

Read together, those numbers suggest presentation helps a home get seen and considered more reliably than it raises the final price. That is still a meaningful result for very little money compared with a remodel.

What decluttering actually involves

Decluttering for a sale goes further than tidying. It usually means clearing countertops and shelves, thinning closets so they look roomy, removing extra furniture so each room shows one clear purpose, and taking down most personal photos. Most of what comes out falls into three groups: things you will sell or donate, things you will need in the next house, and things you will not miss until after the move. Only the second and third groups need to be kept somewhere.

How to Choose by Timeline: A Worked Budget

The right project depends less on the national rankings than on two questions: how soon you expect to sell, and what condition the house is in now. NAR found that 18% of consumers who remodeled did so because they planned to sell within two years, so this is a common decision, not an edge case.

Selling within about two years

• Fix condition problems first. A failing roof, an aging furnace, or water damage affects the appraiser’s condition rating, the inspection report, and sometimes loan eligibility. Fannie Mae will not buy loans on homes in the lowest condition category until repairs are made.
• Then the visible exterior replacements, where the doors, siding, or garage door are worn.
• Then a light kitchen or bath refresh, not a remodel.
• Then decluttering, cleaning, and paint, which cost the least and are what agents recommend most.

Staying five years or longer

Weight comfort, function, and operating cost more heavily. A kitchen that works for how you cook or an efficient HVAC system pays you back every month you live with it, and the resale estimate becomes one consideration among several.

A worked example with a $30,000 budget

Suppose you have about $30,000, plan to sell in 18 months, and the house has a dated kitchen, a worn garage door, a tired front door, and siding that is starting to fail. Using the 2025 Cost vs. Value national averages:

• Option A, minor kitchen remodel: $28,458 cost, $32,141 estimated value. About $3,683 ahead.
• Option B, garage door, steel entry door, and vinyl siding: $4,672 plus $2,435 plus $17,950 is $25,057 in cost, against $12,507 plus $5,270 plus $17,313, or $35,090, in estimated value. About $10,033 ahead, with about $5,000 left for paint and cleanup.
• Option C, midrange bath remodel: $26,138 cost, $20,915 estimated value. About $5,223 behind.

Now run Option A with the NAR figure for a minor kitchen upgrade instead: 60% of $28,458 is about $17,075 in value, which is roughly $11,383 behind. The same project swings by about $15,000 depending on which survey you trust. That is the strongest argument for checking the local Cost vs. Value figures for your city and asking a listing agent what buyers in your price range are reacting to.

Two cautions on the arithmetic. Survey values do not stack perfectly; a buyer does not add up line items the way a spreadsheet does. And Option B only makes sense because those components were worn. Replacing a sound garage door and good siding to chase a percentage is spending money to change nothing a buyer can see.

Keep the receipts

Whatever you choose, keep invoices, permits, and before-and-after photos together. IRS Publication 523 explains that the cost of improvements that add to a home’s value, prolong its useful life, or adapt it to new uses can generally be added to your basis, which can reduce taxable gain when you sell. Routine repairs and maintenance generally cannot, unless they are part of a larger remodeling project. How that applies to your sale depends on your situation, so treat the publication and a tax professional as the authority, not this paragraph.

Where Your Belongings Go During a Renovation

Interior projects need empty rooms, and empty rooms need somewhere for their contents to go. The planning method is the same one we use for any move: estimate the floor area your things need, add an aisle, and match it to the space you have.

The method

• Boxes and bins stack. Add up their volume, then divide by a realistic stacking height of about 6 feet to get the floor area they need. A medium moving box of about 18 by 18 by 16 inches holds roughly 3 cubic feet.
• Furniture mostly does not stack. Measure its footprint instead.
• Add about 20% for an aisle if you will need anything back before the project ends.

On that basis, a 5x10 storage unit offers 50 square feet of floor, a 10x10 offers 100, a 10x15 offers 150, and a 10x20 offers 200. Ceiling heights vary by facility, so treat these as planning numbers.

Three common renovation scenarios

• Minor kitchen remodel: cabinet and pantry contents in about 35 medium boxes is roughly 105 cubic feet, or about 18 square feet stacked. A dining table and six chairs need about 20 more. With the aisle, that is roughly 45 square feet, which fits a 5x10. Many households keep a basic temporary kitchen in another room, which trims the box count.
• New flooring through three furnished rooms: a sofa and armchair (about 30 square feet), coffee table and media console (about 16), a queen bed and two dressers (about 45), a dining set (about 20), and 20 boxes of books and decor (about 10 stacked) total roughly 121 square feet. With the aisle, about 145, which points to a 10x15.
• Decluttering before a listing: an extra sofa (about 20 square feet), a bookcase and two side tables (about 10), and 40 boxes of books, decor, and off-season clothes (about 20 stacked) total roughly 50 square feet. With the aisle, about 60, which fits a 10x10, or a 5x10 if you can pack it solid.

Protect what a garage or attic would damage

Renovation overflow often lands in a garage or attic by default. For wood furniture, upholstery, photographs, documents, and electronics, an unconditioned space through a summer is a poor holding area. A climate-controlled unit is temperature-regulated and protects against extreme temperatures, which suits those items better than a garage bay. Wrap furniture before it moves; our guide to wrapping furniture for storage covers which materials can touch which finishes.

Match the rental to the schedule

Contractor schedules slip, inspections get rescheduled, and cabinets arrive late. A month-to-month rental fits that uncertainty better than a fixed term, and lets you end it the week the rooms are back in use. To check the estimate against your own inventory, the storage size calculator turns an item list into a recommended size, the unit size guide shows what fits in each, and you can browse medium units or large units near you.

When You Do Not Need a Storage Unit for a Renovation

We rent storage units, and we would still rather you skip one you do not need. Several of the best-scoring projects in this guide never require one. Skip the unit when:

1. The project is on the outside of the house. Garage doors, entry doors, siding, stone veneer, roofing, and decks leave every room untouched. Window replacement needs a few feet cleared in front of each window, not an empty house.
2. It is one bathroom. Its contents fit in a couple of boxes in a closet.
3. You are painting. Work room by room and shift furniture to the center under drop cloths.
4. A spare room or garage bay can absorb it. For a project measured in days, use the space you already have.
5. The declutter is really a purge. If most of what comes out is headed for donation, resale, or the curb, let it go now. Paying to store a decision you have already made is money spent on nothing.
6. The project is not scheduled yet. Wait for the permit, the contractor’s start date, and the materials. Renting a unit while the plan waits on paperwork buys you nothing.

Where a unit earns its cost is the interior project that needs several rooms empty for weeks, a house with no spare room or garage to take the overflow, or a pre-sale declutter where the things you are keeping need to be out of the house until closing.