Renovation ROI Calculator: Is a Remodel Worth It?

How to use this calculator

You need four numbers. The first two matter most.

1. Project cost. Use the full price from a written bid: materials, labor, permits, design fees and cleanup. If you plan to finance the work, add the interest you expect to pay.
2. Value added. This is how much more your home would sell for because of the project. It is the hardest number to know. Ask a local appraiser or real estate agent how similar homes with and without the feature have sold nearby. If you are unsure, pick a conservative figure.
3. Yearly savings. Some projects cut bills, such as added insulation, sealed air leaks or a more efficient system. Use your utility history or a contractor’s estimate. Leave 0 for projects with no savings, like most kitchen remodels.
4. Years. How long you expect to collect those savings, often the number of years you plan to stay.

The tool shows four results. Try a smaller version of the project, or compare two projects side by side, to see which gives more back.

How this calculator works

The calculator compares what you put in with what you get back.

Total return   = Value added + (Yearly savings × Years)
ROI            = (Total return − Project cost) ÷ Project cost × 100
Percent recouped = Value added ÷ Project cost × 100
Net cost       = Project cost − Value added

ROI counts both resale value and savings. Percent recouped and net cost look only at resale value. Future savings are added at face value, with no inflation or interest.

Worked examples

Example 1 (hypothetical, using the tool’s default inputs). A $25,000 remodel adds an estimated $15,000 of resale value. There are no yearly savings, over a 10-year stay.

• Total return: $15,000 + ($0 × 10) = $15,000
• ROI: ($15,000 − $25,000) ÷ $25,000 × 100 = −40%
• Percent recouped: $15,000 ÷ $25,000 × 100 = 60%
• Net cost: $25,000 − $15,000 = $10,000

The project does not pay for itself in money terms. Whether it is worth $10,000 depends on how much you value the space while you live there.

Example 2 (hypothetical, an energy upgrade). A $10,000 project adds an estimated $8,000 of value and saves $500 a year for 10 years.

• Total return: $8,000 + ($500 × 10) = $13,000
• ROI: ($13,000 − $10,000) ÷ $10,000 × 100 = 30%
• Percent recouped: $8,000 ÷ $10,000 × 100 = 80%
• Net cost: $10,000 − $8,000 = $2,000

Here the savings push the ROI above zero, even though resale value alone covers only 80% of the cost.

What your result means

A positive ROI means the project should return more than it costs, if your inputs are right. A negative ROI means you are paying for comfort, function or style, which can still be a fine choice. Percent recouped tells you what share of the cost you could get back if you sold. Net cost is the real price of enjoying the project.

Small inputs change the answer a lot, especially value added. Before you sign, test a lower value and fewer years to see a cautious case. Also compare the project with fixing what you have; the repair or replace calculator helps with that choice.

Rules that change the answer

• Improvements vs. repairs for tax purposes. IRS Publication 523 says improvements add to your home’s value, extend its useful life or adapt it to new uses, and their cost is added to your basis. Repairs and maintenance, like painting or fixing leaks, are not (IRS). Use the home sale capital gains calculator to see how basis affects a sale.
• Federal energy credits ended. The IRS says the Energy Efficient Home Improvement Credit is not allowed for property placed in service after December 31, 2025, and the Residential Clean Energy Credit is not allowed for expenditures made after that date (IRS). Do not reduce your project cost by those credits for new work. Utility or local rebates may still apply.
• Property taxes may rise. In many places, a major addition can raise your assessed value. Check with your county assessor before you build.
• Permits and HOA approval. Unpermitted work can lower resale value or need to be redone. In an HOA, exterior changes often need approval first.

Common mistakes

• Using national averages as your value added. Local sales are what matter.
• Leaving out permits, design fees or financing interest. That makes ROI look better than it is.
• Counting savings for more years than you will stay.
• Counting routine repairs as an investment. A new roof on a leaking house protects value more than it adds it.
• Skipping contractor checks. The FTC warns about red flags such as unannounced door-to-door offers and demands to pay everything up front or in cash (FTC). Our guide to hiring a contractor covers licenses, bids and contracts.

Comparing project types

Figures are hypothetical, to show how project type shapes the result. The 2023 American Housing Survey reported median spending of $8,000 on kitchen remodels and $5,000 on bathroom remodels (Census Bureau and HUD); real costs vary widely.

Limits and when to get help

This calculator does not know your local market, your home or your contract. It ignores inflation, the time value of money, loan interest unless you add it, tax effects and the value of your own comfort. Its defaults are hypothetical examples, and its result is only as good as your value-added estimate.

For value added, ask a licensed appraiser or a local real estate agent. For costs, get at least three written bids from licensed, insured contractors. For tax questions about basis or a planned sale, talk with a tax professional. If energy savings are a big part of the case, ENERGY STAR’s guidance on sealing and insulating and the electricity cost calculator can help you check the savings figure.