How we estimate renovation costs

Last reviewed November 5, 2026. Ranges are planning estimates, not contractor quotes.

RenovateCost publishes US homeowner budgets so you can tell a fair bid from a vague one before anyone walks the house. Every dollar figure is a range. None of them is an offer to do the work, and none of them is a promise that your city will price the job inside the band.

Estimates, not quotes

A quote prices a written scope on a real house: the foundation, the permit desk, the finish list, and that contractor’s calendar. Our ranges describe a typical version of the project for planning. Two licensed bids on the same scope can still differ by several thousand dollars. Use the range to write the scope and to throw out a bid that is a single round number with no lines. Then hire from the bids, not from the article.

We do not take project details by email and send back a price. The contact page says what we can and cannot answer. The editorial policy covers corrections, affiliates, and how tool pages are ranked.

Where the numbers live

Guides that have been moved onto the price book read their tiers, line items, and state factors from src/data/price-book.json. Charts, quick answers, article cards, and the homepage ranges read that file. The date on this page — November 5, 2026 — is the asOf date in the book. Changing a migrated guide’s dollars means editing the book, not retyping the same table in the article.

Guides currently on the price book:

Some state articles are not on that file. California bathroom, California kitchen, and Arizona kitchen keep the tables in the article, because one multiplier does not describe those markets. The bathroom remodel cost calculator uses the price book for the national, Texas, and Florida tiers, and it uses the California article’s metro table for inland, Los Angeles, and Bay Area choices.

National tiers

A national guide states the room or the project the band assumes. For bathrooms, that is a standard 40–80 sq ft room with mid-tier fixtures and US national labor, unless the tier says the layout changes. The tiers are scope levels, not percentiles of a secret bid database. The “most homeowners” band can overlap two tiers. On bathrooms, most homeowners land at $6,500–$18,000, while the mid-range tier — new vanity, toilet, tile, and lighting, same footprint — is $8,000–$18,000. The calculator follows the tier that matches the scope you pick, and it says so.

Component rows (labor, vanity, tile, and so on) are ranges for a typical project. The shares overlap, so the rows are not a ledger that sums to one total. Labor on a bathroom is published as 40–65% of the project. Materials are the rest of that share band, not a second invoice.

How state multipliers are derived

State and regional factors are planning multipliers, not a cost index we compute from a formula in the page. Each one starts from a national anchor — usually published project ranges from Angi, checked against the JLC / Zonda Cost vs. Value 2025 packages — and then moves only as far as the wage and scope evidence supports. The wage source for trade labor is the BLS Occupational Employment and Wage Statistics series for plumbers, pipefitters, and steamfitters. Those figures are employee wages, not the number on an invoice. An invoice adds insurance, a truck, overhead, and profit, so we do not multiply a project total by the wage gap and call it a state price.

Materials are priced nationally unless a guide says a local code or climate adds scope (waterproofing, a ducted fan, flood review, Title 24). That is why a state can show plumber wages well under the US median and still have a project band that sits near the national band. Florida is the clearest case: the wage gap is real, and moisture detailing pulls the high end back up.

Region	Factor	Why the band is this wide
California	1.25–1.45×	Coastal metros bill licensed trades well above the national median.
Northeast	1.25–1.45×	New York, New Jersey, and New England labor tracks California more than the Midwest.
Florida	0.95–1.12×	Inland jobs can price under the national band; coastal moisture detailing and insurance-market labor pull the high end up.
Texas	0.88–1.02×	May 2025 BLS wage medians for plumbers run about 6% under the US median. Materials are priced nationally, and Austin often clears the US figure, so the band is 0.88–1.02× rather than a flat discount.
Southeast (excluding Florida)	0.85–1.0×	Carolinas, Georgia, Alabama, and neighboring states. Use the Florida band on the coasts.
Midwest	0.80–0.95×	Ohio, Michigan, Indiana, Illinois, Wisconsin, Minnesota, and nearby markets.
Rural areas	0.70–0.85×	Lower labor, longer travel. Remote trip charges can erase the discount.

The California row in that table is the single factor on the national bathroom and kitchen guides. It is the right tool for a rough regional comparison. It is the wrong tool for a Bay Area primary bath. The California bathroom article replaces it with inland, Los Angeles, and Bay Area rows, and the calculator follows those rows when you pick a California market.

How a state page applies the factor

A state guide that extends a national guide does not invent a second set of tiers. It multiplies the national low by the region’s low factor and the national high by the region’s high factor. Lows and highs use different factors on purpose: the bottom of the market and the top of the market do not move by the same percent.

Rounding matches the price book. A project total of $1,000 or more rounds to the nearest $100. A total of $100 or more, but under $1,000, rounds to the nearest $10. Anything smaller rounds to the nearest dollar. Per-square-foot figures round to the nearest $0.10. We round after the multiplication, not before.

Metro rows are a second step, and they are not stacked on the state band. A Houston or Austin line scales the national typical band by that metro’s factor. Applying the state factor and then the metro factor would double-count the adjustment. The state page says this next to the metro table.

Worked bathroom example, standard full bath, mid-range tier, national $8,000–$18,000. Texas factors are 0.88–1.02×. The low becomes $8,000 × 0.88 = $7,040, which rounds to $7,000. The high becomes $18,000 × 1.02 = $18,360, which rounds to $18,400. That is the Texas mid-range tier. Florida is $8,000 × 0.95 = $7,600 and $18,000 × 1.12 = $20,160, which rounds to $20,200 on the high end and $7,600 on the low end.

The bathroom calculator

The bathroom remodel cost calculator is the same book plus the choices a whole-project budget needs: room type, scope, location, and three toggles (moving plumbing, tub-to-shower, permits). A standard full bath with the permit allowance on and no add-ons reproduces the published tier for the United States, Texas, and Florida, and it reproduces the California metro row for a standard bath. The assumptions and the check table sit on the calculator page. Room types other than a standard full bath use the national size table’s midpoint ratio, except a California primary bath, which uses the California guide’s 25–45% adder.

Optional add-ons are not silent. Moving plumbing uses the national guide’s $2,000–$5,000 allowance for moving a toilet a few feet, then the location factor. Tub-to-shower uses the pro acrylic, same-drain band ($2,200–$5,500) from the tub-to-shower guide. The luxury tier already includes a plumbing move, and the high-end and luxury tiers already include a walk-in shower, so those toggles turn off instead of counting the work twice. The permit allowance starts on, because the published tiers already include it.

Update cadence

Cost figures are reviewed at least twice a year, and again when a source we rely on publishes a new edition (a Cost vs. Value report, or a new BLS wage release that would move a state factor). The price-book date on this page is the last time those shared figures were reviewed. Each guide also shows its own published and updated dates. A sentence in an article can be edited without a price change; a price change on a migrated guide has to land in the book so the chart, the quick answer, and the calculator stay on the same number.

Tool roundups are a different product. Rankings labeled “Compared & Ranked” use manufacturer specs and published street prices. They are not hands-on tests. That standard is part of the editorial policy.

What we do not do

We do not publish a zip-code price. Metro rows are planning factors for comparing quotes, not a bid for your block.
We do not guarantee a resale payback. When we cite Cost vs. Value, we cite the package that report actually priced.
We do not invent a state by copying another state’s article and swapping the name.
We do not treat a calculator result as permission to skip a permit. The building department decides that.