Adding a garage or replacing a garage door is one of the best home improvements for resale value. It can add tens of thousands of dollars to your home's value.
How much value it adds varies a lot depending on where you live, the type of garage you're adding, and how it fits the neighborhood. But it's clear that buyers want garages, and they'll pay for them.
This guide will help you figure out whether adding or upgrading a garage makes financial sense for your situation, what it'll cost, and what buyers actually care about when they pull up to a property.
How much value does a garage add to a house?
A garage door replacement has the highest ROI of any home improvement project in the country. As of 2025, it returns an average of 268%, meaning it more than doubles its cost in added home value.[1] The ROI for garage door replacements has dramatically increased in the past couple of years. ROI was 193.9% in 2024 and 102.7% in 2023.[2]
Adding a new garage has a much lower ROI. It typically returns 75–85% of its cost at resale (meaning you'll spend more than the value it adds to your house), but it can still be worth it in some cases.[3]
You'll want to consult a local real estate agent to help you determine which home improvements make sense for you.
How location affects garage value
Where you live is one of the biggest factors in how much a garage is worth.
Garages command the highest premiums in cold-climate Midwest cities (think Chicago, St. Louis, and Columbus), where harsh winters and limited street parking make a garage close to a necessity for many buyers. At the other end, Sun Belt markets like Austin and Raleigh tend to see much smaller premiums because mild weather reduces the practical need and driveways are already standard.
Redfin's 2018 analysis of single-family home sales found that garage premiums vary dramatically by metro.[4] No comparable, rigorous updated analysis exists, but agents and appraisers consistently report the same directional pattern today. Here's the 2018 data to give you an idea of how much the value can vary.
| Metro area | Garage premium (% of home value) | Estimated dollar value added |
|---|---|---|
| Chicago, IL | 38% | $47,000 |
| St. Louis, MO | 35% | $34,000 |
| Columbus, OH | 24% | $24,000 |
| National average | 12% | $23,000 |
| Los Angeles, CA | 3.5% | $26,000* |
| Austin, TX | 3.2% | $9,500 |
| Raleigh, NC | 2% | $4,000 |
How appraisers value a garage
It's worth understanding how an appraiser thinks about a garage, because an appraisal affects financing for any buyer using a mortgage.
Appraisers use the comparable sales ("comps") approach: they look at recent nearby sales of similar homes and adjust for differences. If most comps have two-car garages and your home has a one-car garage, the appraiser will lower your home's estimated value. If your home has a garage and comparable homes don't, the appraiser will increase your home's estimated value.
Three things matter most in that adjustment:
- Square footage. Both attached and detached garages add to the effective area of a property, which generally produces an automatic bump in value.
- Match to area standards. A garage that aligns with neighborhood norms adds more value than one that exceeds them.
- Condition. A garage with stained flooring, a broken door, or deferred maintenance will be adjusted downward. Buyers and appraisers both treat a rough garage as a signal about the overall condition of the home.
Cost to build a garage
Here's what you can expect to spend in 2026:[5][6]
| Garage type | Typical cost range | Notes |
|---|---|---|
| Attached, 1-car | $15,000–30,000 | Shares a wall and utilities with the home |
| Attached, 2-car | $25,000–45,000 | Most common addition; best ROI |
| Detached, 1-car | $18,000–35,000 | Requires full foundation and four walls |
| Detached, 2-car | $35,000–55,000 | Costs 10–20% more than attached equivalent |
| Prefab/kit garage | $7,200–26,000 | Lower upfront cost; typically adds less value |
Costs average about $50 per square foot when labor and materials are combined, but range from $30 per square foot for a simple attached structure to $120 per square foot for a custom detached build.[5] Labor typically accounts for 50–70% of the total project cost.
Budget for these additional line items:
- Building permits: $1,200–1,500, depending on your municipality and project scope[5]
- Electrical work: $1,100–3,000 for a standard run; more for a detached garage farther from the main panel[6]
- Concrete slab foundation: $6–12 per square foot[5]
- Insulation: $1–4.50 per square foot installed; especially important for attached garages or cold climates[7]
Regional costs vary significantly. Labor rates and material availability mean coastal and urban markets like California, New York, and Hawaii typically run well above the national average, while the Midwest and South tend to come in below it.[8] Before budgeting, get local quotes. National averages are a starting point, not a reliable estimate for your project.
Is building a garage worth it?
Building a garage can be worth it in some cases, but not all.
For example, if a two-car attached garage costs $35,000 to build and adds $28,000 in value (an 80% ROI), you're paying about $7,000 for a feature you'll use every day. If you plan to stay in the home for several years and your market values garages, the practical use typically offsets that gap.
The calculation gets trickier if you're adding a garage primarily to sell quickly. In that case, here's what you need to think about:
- Ask your real estate agent to pull comps: what's the price difference between similar homes in your neighborhood with and without garages?
- Get at least three contractor quotes for the build you're considering.
- Compare the estimated value added to the total project cost, including permits.
- Factor in how long you'll use the garage before selling. The longer you stay, the more the practical value matters relative to the ROI.
If the value added is less than the build cost and you're selling within a year, you may be better served by a garage door replacement or a renovation of an existing garage instead.
Cost to upgrade a garage
If you already have a garage, upgrading it is often a better financial move than building new, because the cost is lower and the added value can be immediate.
Garage door replacement
Replacing a garage door has the highest ROI of any home improvement project in the country right now: an average of 268% at resale.[1]
The national average project cost is $4,672 for a full replacement.[9]
The garage door covers up to a third of a home's front facade. Buyers often form an opinion about a home's condition before they step inside, and an outdated or damaged garage door signals neglect. A new garage door, especially one that matches the home's architectural style, can create a much more positive impression.
Lower-cost garage improvements
If a full replacement isn't in the budget, these smaller updates can improve buyer perception before a sale:
- Repaint the garage door. A fresh coat of paint in a neutral color that complements the house is one of the cheapest ways to improve curb appeal. The cost is $30–100 in materials if you do it yourself.[10]
- Clean and seal the floor. Epoxy floor coating hides stains and makes the space look well-maintained. Professional installation for a two-car garage typically runs $1,100–4,300.[11]
- Declutter thoroughly. This costs nothing. Buyers need to visualize their vehicles and storage in the space, and a packed garage makes it feel smaller and harder to evaluate.
- Add lighting. Bright, evenly lit garages feel more spacious and modern. A simple LED shop light costs $40–80.[12]
What buyers look for in a garage
Space
A two-car garage is the sweet spot for most buyers. Extra garage storage is one of the most sought-after home features, alongside walk-in pantries and home office space.[13] A two-car garage allows room for both vehicles and the bikes, lawn equipment, and seasonal storage that buyers are typically trying to accommodate.
That said, scale matters. A four-car garage on a modest 1,200-square-foot house can look out of proportion and actually detract from curb appeal. Your garage footprint should feel consistent with the home and lot size.
Attached vs. detached
Attached garages are generally preferred by buyers, particularly in cold or wet climates, because they allow access to the home without going outside. They're also cheaper to build and maintain.
Detached garages have their own appeal: they're easier to repurpose as a workshop, studio, or flex space, and they tend to look less dominant on the home's facade. For buyers interested in those uses, a well-designed detached garage can be a genuine selling point.
From a pure ROI standpoint, attached garages typically come out ahead because they cost 10–20% less to build than equivalent detached structures.[6]
Condition and maintenance signals
A garage in poor condition sends buyers the wrong message. Cracked concrete, a rusted or dented door, peeling paint, and broken overhead lighting are all signals that the home may have been underinvested in more broadly. If you're selling, the garage is worth cleaning and staging, even if you're not replacing anything.
Exterior finish and style
The garage should look like it belongs to the house. A metal-sided garage on a brick colonial, or a garage whose door style clashes with the home's architecture, reduces curb appeal for many buyers. When adding a garage, matching materials and rooflines to the main structure is often worth the added cost.
Property tax implications
Building a garage will almost certainly increase your property tax bill, because it constitutes new construction (i.e., a permanently assessable improvement to the property). The exact increase depends on your local tax rate and the assessed value the county assigns to the new structure.
Most jurisdictions flag the improvement when they see the building permit. The assessor then determines the fair market value of the new garage and adds that amount to your assessed value. Only the new addition is reassessed. The rest of your home's value is unaffected.[14]
As a rough estimate, if your local property tax rate is 1.2% and the county assesses your new two-car garage at $25,000, you'd owe about $300 more per year in property taxes.
A few practical notes:
- Permits trigger assessments. Tax assessors have access to building permit records. If you pull a permit (which you should, for code compliance and resale), the improvement will be recorded.[15]
- Rules vary by state and county. Some states have specific limits on how quickly assessed values can rise. Others reassess immediately. Contact your local assessor's office before you build if you want a clearer picture of your exposure.
- It's usually not a dealbreaker. The annual tax increase from a garage addition is typically modest compared to the value the garage adds and the daily utility you get from it.
What to do before you build
Check zoning first
Before you spend anything, verify that a garage addition is permitted on your property. Local zoning ordinances can restrict setback requirements (how close the structure can be to property lines), maximum lot coverage, height limits, and the number of structures permitted on a residential lot.
Your local building or planning department website is the best starting point. A contractor who regularly builds garages in your area will also know what's typical.
Get multiple quotes
This is a major investment. Get at least three detailed, written quotes from licensed contractors before you commit. Ask each one to break out labor, materials, foundation work, and permit fees separately so you're comparing equivalent scopes of work. A low bid that excludes permits or electrical work isn't a bargain.
When evaluating contractors, check their licensing status with your state contractor licensing board, read reviews on third-party sites like Google and the BBB, and ask for references from recent garage builds they've completed.
If you're thinking about selling soon and want guidance on whether a garage addition makes sense in your specific market, find a local real estate agent who can pull comps and tell you what a garage is worth to buyers in your neighborhood.
