Before You Buy a Home Improvement Project in 2026: 37% of Owners Went Over Budget. Paying in Full Doesn't Stop a Lien.

The contractor says $28,458. Your bank account will say more.

Here's the same kitchen on the calculator above:

That's $7,640.70 more than the quote. It's 26.9 percent above it.

Pay half with a 24-month loan at 11.9 percent and the loan adds about $2,200 in interest. Our arithmetic.

The quote is what you sign. The budget is what you pay.

Is 15 percent too much? Houzz's 2026 study says 37 percent of renovating owners exceeded budget in 2025. 35 percent landed on target. The reasons they gave:

• Costlier products or services: 52%
• Higher-end materials: 35%
• The scope grew mid-project: 31%

The median renovation among owners who renovated in 2025 was $20,000. The top 10 percent cost $150,000 or more.

Houzz surveys registered users, so it skews toward project-minded owners.

For a cushion, the only government number we found is HUD's. For FHA rehab loans on structures 30 years or older, it requires a reserve of at least 10 percent, or 15 percent if utilities aren't operable, up to 20 percent. That's from a 2019 handbook version. Fixr suggests less, but its own pages disagree with each other.

Our example: 10 to 20 percent of the $28,458 kitchen is $2,846 to $5,692.

The newest Cost vs. Value report we could confirm is Zonda's 38th annual edition, from September 18, 2025. We found no 2026 edition.

Zonda sells housing data. Its value at sale is an estimate from real estate professionals. Respondent counts aren't published.

Two larger projects came only from search snippets of a trade table: a midrange major kitchen at $82,793 recouping 50.9 percent, and an upscale bath at $81,612 recouping 41.7 percent. We couldn't open the table.

That's the pattern. Small exterior jobs often return more than they cost. Large interior jobs return about half.

Here's what aggregator Fixr reports. Its data basis is only a variety of pricing databases, licensed contractors and industry experts:

• Kitchen. About $27,000 on average. Most pay $15,000 to $45,000. Labor is 50 to 60 percent. Cabinetry is 40 percent of the bill. Flooring is 18 percent and countertops 14 percent. Permits run $450 to $2,500.
• Bathroom. About $12,000, with a range of $6,000 to $18,000. Labor is about half. That's about $120 per square foot.
• Fence. About $4,500. Most pay $3,000 to $7,000 for 200 linear feet.

We found no reliable sourced figure for hardwood flooring, interior painting, landscaping or general contractor fees. Fixr's hardwood page contradicts itself, so we left it out.

Materials and labor both pushed up this year.

The National Association of Home Builders reported on October 15, 2026 that building materials rose 5.5 percent from a year earlier in September. Softwood veneer and plywood rose 15.9 percent. Particleboard and fiberboard rose 7.8 percent. Energy inputs rose 64.1 percent and diesel 115.2 percent. Its post doesn't discuss tariffs.

The Associated Builders and Contractors reported construction inputs overall rose 11.2 percent, the largest rise in nearly four years. Its economist tied much of it to fuel prices from the conflict in Iran and said tariffed metals keep climbing.

NAHB's remodeling price index for non-labor costs rose 6.6 percent in the second quarter of 2026, after 3.9 percent in the first. That's the 11th straight quarterly rise. Remodeler hourly earnings were $37.91, up 2.3 percent.

What's the tariff picture? What we verified:

• 10 percent on softwood timber and lumber
• 25 percent on upholstered wood products
• 25 percent on kitchen cabinets and vanities, effective October 14, 2025
• 25 percent on steel and aluminum raised to 50 percent on June 4, 2025, applied to the metal content of derivative products

The January 1, 2026 increase on cabinets and vanities to 50 percent was delayed to January 1, 2027. Countries with a deal are exempt.

The Supreme Court struck down the IEEPA tariffs on February 20, 2026. A 10 percent Section 122 tariff followed. Later status is unclear. One source says it lapsed July 24 after a trade court rejected it, but we couldn't confirm that.

We found no sourced tariff-effect data for appliances.

Backlogs keep projects slow. NAHB's remodeling index was 62 in the third quarter of 2026, with its backlog index at 56. It says labor shortages, worsened by immigration enforcement and data-center construction, lengthen timelines.

A big deposit is how a bad job gets worse.

The law caps deposits in some states, not all:

Florida's penalties scale with the amount. Under $1,000 is a misdemeanor. $1,000 to under $20,000 is a third-degree felony. $20,000 to under $200,000 is second-degree. $200,000 or more is first-degree.

The FTC says to never pay the full cost up front. It says to make no final payment until you're satisfied.

The FTC notes some states limit deposits. Ask your attorney general or consumer agency.

California progress payments must be in dollars, tied to work done and can't exceed work performed.

In California's Bakersfield sting on April 24 and 25, 2025, bidders on $1,600 to $4,800 jobs were found. Several were accused of excessive down payments.

The cost of an abandoned job is the deposit plus whatever it costs to hire someone else. We found no sourced dollar total.

Keep dates in the contract too. A late finish costs you real money. The remedy is a drafting choice and we found no standard.

You paid the contractor. The contractor didn't pay the electrician.

Now the electrician can put a lien on your house.

California's licensing board says an owner could be forced to pay twice or have the court sell the home. In Florida, releasing final payment without the contractor's sworn affidavit can expose your property to the full amount of valid liens.

The timelines in California, per the board's guide from October 2016:

• A preliminary notice is due within 20 days of starting work or delivering materials
• A lien is recorded within 90 days of completion
• That's 60 days for a prime contractor and 30 for subcontractors after a recorded Notice of Completion
• A foreclosure suit is filed within 90 days of recording

Florida requires a 45-day Notice to Owner from subcontractors and suppliers. Liens from one contract are capped at the contract price.

Notices and deadlines differ by state. Ask a local attorney.

Here's the protection:

1. Ask for a list of subcontractors and suppliers
2. Get a signed conditional release before each payment
3. Get an unconditional release after you pay
4. Consider joint checks
5. In Florida, hold final payment until the contractor's final payment affidavit arrives

Your contractor's debts can become your house's problem.

That is the whole lesson of mechanics liens.

An unlicensed contractor isn't just cheaper. He's uninsured.

California's licensing board runs stings and publishes results:

The statewide sweep covered 454 site visits. The board names no individuals.

Penalties: fines up to $15,000, and a misdemeanor up to six months and $5,000. Repeat offenders face 90 days of mandatory jail.

The homeowner consequence: no bond, no workers' comp and injury liability. If a California contractor with employees lacks workers' comp, you could be liable for an injured worker's costs, and your homeowner's policy may not cover it.

Before you sign, check:

• License. Look up the number and status with your state board. A number on a card proves nothing. In California, the online Instant License Check or 800-321-2752.
• The person. Ask for the pocket license and photo ID.
• Insurance. Ask for a Certificate of Insurance and confirm it with the insurer.
• Bond. California licensees post a $25,000 bond that may not cover a large job.

About the cheap bid: the board says not to accept the lowest by default. A low bid may signal a mistake, missing work or corner-cutting. The FTC says the same.

One conflict: the board's contract pages say a written contract is needed over $500. A May 2025 brochure says a license is needed at $1,000 or more. We couldn't tell which you'll hit. Check before you hire.

A stranger shows up and says he's in the area.

He has leftover materials. He'll take cash. The price is good only today.

That's the pattern the FTC and California's board describe. Unsolicited visits. Pressure to decide now. Cash demanded. No written price. Free inspections that find problems.

After a disaster, the FTC adds more signs: offers to take your insurance check, full payment up front, blank contracts and lender referrals.

We found no sourced dollar total for home repair scams. For solar scams the FTC says costs can run to tens of thousands of dollars.

Here's what you can do. The FTC's Cooling-Off Rule covers sales made away from the seller's place of business, even if you invited the visit.

• Amount: $25 or more at your home, $130 or more elsewhere
• Time: until midnight of the third business day. Saturdays count. Sundays and federal holidays don't.
• The seller must give you a completed receipt or contract with a bold cancellation statement, two cancellation forms and an oral notice
• Refunds are due within ten business days of your notice
• The seller can't assign your debt to a finance company before midnight of the fifth business day

What isn't covered: mail or phone sales, and sales at the seller's permanent store after negotiation there. Real estate, insurance and securities are out too. And transactions already covered by the Truth in Lending right of rescission.

The emergency exclusion needs a separate, dated, handwritten and signed statement describing the emergency and waiving cancellation.

California adds more. You get five business days if you're 65 or older. You get seven business days in a declared disaster area. Price increases over 10 percent are illegal there.

The FTC lists asks you to pull the required permits yourself as a scam sign.

See the roofing guide for storm chasers and insurance claims, and the timeshare guide for another high-pressure sale with a cancel window.

A contractor offers to arrange the loan. It's convenient. It's also where the money leaks.

The FTC lists suggesting you borrow from a lender they know as a scam sign. Compare loan terms before you finance through your contractor.

The documented case: GreenSky. The Consumer Financial Protection Bureau announced a consent order on July 12, 2021. GreenSky was an Atlanta fintech. It let merchants, mainly home improvement contractors, secure loans in consumers' names without authorization.

From 2014 to 2019 it received at least 6,000 complaints from people who never authorized a loan. Its own review put merchants at fault in at least 1,600. The funds went straight to the merchants. The result: up to $9 million in refunds or loan cancellations and a $2.5 million penalty.

Three protections:

• The Holder Rule. Seller-linked consumer credit contracts must carry a notice that any holder is subject to claims and defenses you have against the seller. Your recovery is capped at what you paid. We didn't fully verify the scope.
• Rescission. If a loan puts a security interest in your principal dwelling, you can rescind until midnight of the third business day after the latest of signing, receiving the notice or receiving the material disclosures. That's up to three years if the lender never delivered them. A refund is due within 20 calendar days. Purchase mortgages are excluded.
• The real cost. Our calculator uses the Fed's 11.9 percent on a 24-month personal loan. Your rate will differ.

And 84 percent of Houzz respondents used savings. 34 percent used credit cards. Respondents could choose more than one.

Three bids tell you less than you think. Unless they're for the same job.

California's board says get at least three. The FTC says multiple without a number.

Here's how to compare:

1. Give each contractor identical plans, specifications and scope
2. Make each bid list the work, materials, completion date and price
3. Name brand, model, style, color and hardware. The board's example contrasts install some cabinets with a line naming each.
4. Ask about big gaps. A gap often means a different scope, not a better price.
5. Compare line by line. Check demolition and disposal, permits, and plumbing and electrical. Then check finish materials, cleanup and warranty.

A contract needs:

• Contractor name, address and license number
• The work described
• Materials by brand, model, color and quantity
• The price and a payment schedule
• Who pulls the permits
• Start and end dates
• Cleanup
• A written warranty
• A cancellation notice and a lien warning
• No blanks

Massachusetts requires a written contract over $1,000. It also requires a dollar payment schedule, start and completion dates, the registration number and a three-day cancellation notice. It requires a bold warning against signing with blanks.

Change orders matter. California requires a signed written change order for any change in work, materials, price or dates. The job must be completed for the agreed price.

We found no sourced markup percentage for cost-plus contracts. We also couldn't find a primary definition of allowance. Ask your state board.

Warranty: get it in writing, with scope and duration, plus manufacturer warranties. California allows a board complaint about a faulty project within four years.

Labor is where the savings are. It's also where people get hurt.

Labor is about half of a kitchen or bath bill. At Fixr's splits, that's $13,500 to $16,200 on a $27,000 kitchen. It's about $6,000 on a $12,000 bath. Real savings are lower after tools, mistakes, time and permits.

91 percent of renovating Houzz respondents hired pros. 29 percent hired a general contractor. 41 percent hired an electrician and 40 percent an HVAC contractor. 36 percent hired a plumber.

The EPA's lead rule requires paid renovators in pre-1978 homes to be certified lead-safe. Owners working on their own homes are generally not covered. Landlords and flippers are.

If you sign as owner-builder, you take on supervision, inspection, payment and employer duties. You also take on lien risk. California limits the exemption to a principal residence you occupied for 12 months and two structures in three years.

We found no safety data for do-it-yourself work. CDC data on falls is for workers. 805 US workers died from falls in 2020, and construction has the most.

A middle option: do the demolition, painting and cleanup yourself. Hire licensed trades for structure, electrical, plumbing and gas. We found no sourced savings data for it.

It takes longer than people expect. Houzz's median kitchen took 9.5 months of planning plus 5.8 months of construction. Fixr says most bathrooms take 2 to 12 weeks, typically 2 to 4.

Don't count on a federal credit for 2026 work.

The IRS's page on the energy efficient home improvement credit, 25C, was updated April 28, 2026. It covers qualifying property placed in service on or after January 1, 2023 and before December 31, 2025. It describes no 2026 rules.

The residential clean energy credit, 25D, was updated July 4, 2026. It says it is not available for property placed in service after December 31, 2025. The same page still mentions a 2033 phase-out. That's a conflict.

ENERGY STAR says through the end of 2025.

Our plain reading: no 25C or 25D credit for property placed in service in 2026. Confirm with a tax professional. We couldn't open the IRS FAQs on Public Law 119-21.

The Department of Energy says Home Energy Rebates are now available in select states. It directs people to their State Energy Office. We found no list, funding or deadlines.

We found no sourced data on utility rebates.

See the heat pump guide, the solar panel guide and the replacement windows guide for the energy upgrade details.

Six rules. Each one comes from the cases above.

We read the FTC, the Consumer Financial Protection Bureau and California's contractor licensing board. We read the IRS, HUD and the Federal Reserve. We read NAHB, Zonda, Houzz and Fixr as well. We checked them on October 19, 2026. Several sources are vendors or trade groups, and we say so where we use them.

Nothing here is legal, tax or financial advice. Rules vary by state. California's board publishes the most detailed guidance, so many examples come from there.

The pages we used:

• The FTC on avoiding a home improvement scam
• The FTC on the Cooling-Off Rule
• The FTC on disaster scams
• The cooling-off rule text, 16 CFR 429
• The right of rescission, 12 CFR 1026.23
• The Holder Rule, 16 CFR 433.2
• The CFPB on GreenSky
• California's board on contracts
• California's board on finding a contractor
• California's mechanics lien guide
• Massachusetts chapter 142A
• Florida statute 489.126
• Florida statute 713.06
• Zonda's 2025 Cost vs. Value report
• Houzz's 2026 study
• NAHB on building material prices
• The IRS on the home improvement credit

What we couldn't confirm:

• A 2026 Cost vs. Value report
• Prices for hardwood flooring, painting, landscaping and general contractor fees
• Cost-plus markups, a primary definition of allowance and seasonal pricing
• Permit lead times and do-it-yourself injury data
• Lead-generation platform harm and dealer-fee amounts
• The status of the Section 122 tariff
• Appliance tariff effects
• IRS wording on 25D and the Public Law 119-21 FAQs
• Utility rebate availability

This guide is one of 25 in our series on what people research before they buy.