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A free home remodel cost estimator. Get a realistic budget range for your kitchen, bathroom, addition, basement, or whole-home renovation in under a minute — priced to your ZIP code, with an optional AI breakdown of what's driving cost and where you can save.
A reliable home renovation estimate starts with three numbers: square footage, scope, and a regional cost-of-construction index. The BuildTrust renovation budget calculator combines those with finish-level multipliers and site-condition flags to produce a planning range — a low, most-likely, and high figure — instead of a single false number. Kitchens and bathrooms cost more per square foot than bedrooms because they pack plumbing, electrical, cabinetry, countertops, tile, appliances, and ventilation into a small footprint. A whole-home renovation looks cheaper per square foot but adds up fast once you total finishes, mechanical upgrades, and permits across every room.
Five things move the number more than anything else. Location — labor and materials in California, New York, or Massachusetts run 30–60% higher than in the Midwest or the South, which is why ZIP-code pricing matters. Finish level — builder-grade laminate and big-box fixtures cost a fraction of semi-custom cabinetry or designer-grade tile, and high-end appliances alone can add $15–40k to a kitchen. Layout changes — moving walls, relocating plumbing, upgrading the electrical panel, or touching anything load-bearing pulls in structural engineering, permits, and trades that don't show up on a cosmetic refresh. Permits and jurisdiction — historic districts, coastal zones, and strict municipalities add weeks of review and thousands in fees. And contingency — every honest estimate carries 10–20% reserve for the things you can't see until demolition opens the wall.
A budget range is only half the story. The harder question is: is the quote my contractor just handed me fair, and is the contract going to protect me? That's where BuildTrust takes over. Once you have an estimate, you can save it, turn it into an editable scope of work, and upload any contractor proposal or contract. Our AI compares the quote against this calculator's range for your ZIP and finish level, flags line items that look unusually high or low, and reviews the contract against your state's home-improvement requirements — three-day cancellation language, down-payment caps, mechanic's lien notices, required contractor license and insurance disclosures, and the clauses your state demands by statute. Missing clauses are flagged in plain English, with a one-click option to generate a compliant version. The whole review is free for your first project. The goal is simple: walk into bidding with a realistic number, sign a contract that actually protects you, and keep a permanent record of the project once work begins.
Upload it to BuildTrust and our AI will check if it falls within this range — and flag any missing clauses against your state's contract requirements. Free for your first project.
Once you have a budget, use our free Renovation ROI Calculator to see the typical resale value added and net cost after sale — based on national Cost vs. Value data for your project type and finish level.
The calculator returns a planning range (low, most likely, high) based on regional cost-of-construction data and finish-level multipliers. It's accurate enough to decide whether a project fits your budget. Actual contractor bids vary with site conditions, material selections, and local market backlog — always treat this as a planning band, not a fixed quote.
Materials, labor, permits and design fees, and a 10% contingency reserve for unforeseen conditions. Each scope is broken into line items so you can see where the money goes.
Yes. Enter a US ZIP code and the calculator applies a state-level cost-of-construction index, so a kitchen in California prices differently than one in Ohio.
No — the calculator and AI cost breakdown are free to use without an account. A free BuildTrust account adds: saving your estimate, turning it into a detailed scope of work, and 1 free AI contract review that flags missing or non-compliant clauses for your state. No credit card required.