Home Renovations With the Best ROI at Resale
By Matthew Martinez, Founder, CEO & Managing Broker, Diamond Real Estate Group. California DRE #01869679.
The home renovations with the best return at resale are small, visible exterior jobs: a new garage door, a steel entry door and manufactured stone veneer each recouped more than 200% of their cost nationally in the 2025 Cost vs. Value report. A modest kitchen refresh came next at about 113%. Large projects such as major kitchen remodels, additions and ADUs usually return well under their cost when you sell.
That does not mean big projects are a mistake. It means you should separate two goals: improving a home you plan to live in, and preparing a home you plan to sell. This guide uses the most recent national and Pacific-region data, then adds what we see in Northern California, where permits, fire rules and buyer expectations change the math.
What the 2025 data shows
Zonda’s Cost vs. Value report, published in September 2025, estimates what 28 common projects cost and how much of that cost real estate professionals expect to get back at sale. The table shows national averages and the Pacific region, which includes California.
| Project | National cost | National recouped | Pacific recouped |
|---|---|---|---|
| Garage door replacement | $4,672 | 267.7% | 262.0% |
| Entry door replacement, steel | $2,435 | 216.4% | 205.4% |
| Manufactured stone veneer | $11,702 | 207.9% | 231.7% |
| Siding replacement, fiber-cement | $21,485 | 113.7% | 130.4% |
| Minor kitchen remodel, midrange | $28,458 | 112.9% | 129.1% |
| Deck addition, wood | $18,263 | 94.9% | 102.5% |
| Backup power generator | $13,534 | 95.3% | 96.4% |
| Bath remodel, midrange | $26,138 | 80.0% | 91.0% |
| Window replacement, vinyl | $22,073 | 75.5% | 85.3% |
| Roof replacement, asphalt shingles | $31,871 | 67.5% | 76.2% |
| Major kitchen remodel, midrange | $82,793 | 50.9% | 57.2% |
| Accessory dwelling unit | $166,406 | 41.3% | 38.8% |
| Primary suite addition, midrange | $170,517 | 32.3% | 32.2% |
Treat these as averages, not promises. Bay Area labor costs run higher than national figures, and the value a project adds depends on your house, your street and what competing listings offer.
Why small exterior projects score so high
Buyers form an opinion in the first few seconds, often from listing photos. A dented garage door or a faded front door makes a house look neglected. Replacing them is cheap compared with how much they change that first impression. The same logic applies to fresh exterior paint, repaired fences, clean gutters and tidy landscaping, which are not all in the report but follow the same pattern.
In wine country, the approach matters as much as the façade. A clean driveway, working gate, clear address sign and trimmed vegetation set the tone for rural and acreage listings.
Interior projects that usually pay off
A minor kitchen refresh, not a gut remodel
The report’s “minor” kitchen job keeps the layout and cabinet boxes but replaces fronts, counters, sink, faucet and appliances. That recouped about 113% nationally. A full midrange remodel recouped about half. If you are selling within a year, refresh rather than rebuild.
Bathrooms
A midrange bath remodel recouped 80% nationally and 91% in the Pacific region. Smaller fixes, such as new lighting, a vanity, regrouting and a new toilet, often get most of the visual benefit for far less.
Floors and paint
Refinishing existing hardwood is one of the cheapest ways to make rooms look new. Neutral interior paint does the same for walls. Neither is in the Cost vs. Value list, but both are standard pre-listing work because they photograph well and cost little.
Projects that rarely pay back at sale
- Major and upscale kitchen remodels. Upscale kitchens recouped about 36% nationally.
- Additions. Primary suite additions recouped about a third of their cost, less for upscale versions.
- ADUs. At roughly 40% recouped on resale alone, an ADU makes more sense as a long-term rental or family space than as a pre-sale project. See our guide to land, lots and ADUs in Sonoma County for local rules.
- Solar. Solar recouped about 30% nationally and 41% in the Pacific region at resale. Owned systems tend to be easier to sell than leased ones, because a lease must be transferred to the buyer.
- Highly personal finishes. Bold tile, custom built-ins and niche rooms appeal to fewer buyers.
California rules that change the math
Permits and disclosure
California sellers must disclose known material facts about a property, and the transfer disclosure statement cannot be waived in an “as is” sale. Unpermitted work can slow a sale, scare off lenders or lower offers. For offers accepted on or after July 1, 2024, a seller who sells within 18 months of taking title must also disclose work done by contractors they hired and provide permits that were pulled (Civil Code 1102.6h). Pull permits for structural, electrical, plumbing and mechanical work.
Property tax
In California, additions are assessed as new construction, but only the added value is assessed; the existing home keeps its Prop 13 base. Normal maintenance and repair, such as painting or recarpeting, is generally not reassessed, according to the Board of Equalization. Talk to a tax adviser or your county assessor before a large project.
Fire-zone homes
If your home is in a high or very high fire hazard severity zone, state law (AB 38, Civil Code 1102.19) requires the seller to provide documentation of a defensible-space inspection obtained within six months before the sale agreement, or a signed agreement that the buyer will get compliance within one year after close. Money spent on clearing vegetation, ember-resistant vents and roof and gutter work often does more for a sale than a cosmetic upgrade, because it also affects insurability.
A simple pre-sale plan
- Get a pricing opinion on the home as it stands. Our home valuation is a good start.
- Fix what a buyer’s inspector will flag: leaks, roof issues, safety items, broken windows.
- Do the visible, low-cost items: paint, floors, lighting, front door, garage door, landscaping.
- Consider a pre-listing inspection so there are no surprises in escrow.
- Skip major remodels unless comparable sales clearly show buyers paying for them.
For more detail, see our checklist to prepare your home for sale, our list of DIY projects that add value and our guide to selling a Bay Area home in a divorce, where timing and budget are often tight.
Questions people ask
What renovation adds the most value to a house?
By percentage recouped, small exterior jobs such as a new garage door or steel entry door lead the 2025 Cost vs. Value data. By dollars added, a well-executed kitchen refresh often matters most to buyers.
Should I renovate before selling or sell as-is?
Do repairs and inexpensive cosmetic work. Large remodels usually return less than they cost and delay your sale. Selling as-is can make sense if the home needs major work and buyers in your area expect to renovate.
Does a new roof increase home value?
An asphalt roof replacement recouped about 68% nationally and 76% in the Pacific region. A sound roof also helps with inspections and insurance, which can matter more than the percentage.
Will remodeling raise my property taxes?
Additions and major rehabilitations can be reassessed in California, but only for the added value. Ordinary repairs and maintenance generally are not. Confirm with your county assessor.
Not sure which projects are worth it for your home? We can walk through it with you room by room and show you what nearby buyers have paid for. Visit our sellers page or get in touch.
Sources & notes
- Zonda / JLC: 2025 Cost vs. Value Report, national data and Pacific region data; Zonda report summary
- California State Board of Equalization: New construction and property tax
- CAL FIRE Office of the State Fire Marshal: Information Bulletin 21-007 on AB 38
- California Legislative Information: Civil Code transfer disclosure article (1102 et seq.)
- Note: the Cost vs. Value report is a survey-based estimate. Results vary by market and by home. This article is general information, not tax or legal advice.
Last reviewed October 2026 by Matthew Martinez.