About CostlyHome

What CostlyHome is

CostlyHome publishes free home improvement cost calculators for US homeowners. You enter your project dimensions and get an itemized cost estimate immediately: no email address, no phone number, no zip code gate, no account.

That last part is the whole point. Most home improvement cost tools are lead-generation businesses: they collect your contact details, sell them to contractors, and the estimate is the bait. Others publish a single national average that applies to almost nobody, because construction labor in Mississippi and construction labor in Hawaii differ by more than 70%.

We do neither. We show the formula, itemize every line, apply your state's actual labor market, and never ask who you are.

How the estimates are built

Every estimate starts from a 2026 national baseline for materials and installed labor. That baseline is then adjusted by a state labor multiplier derived from Bureau of Labor Statistics wage data for construction trades, relative to a national average of 1.00. The multipliers currently range from 0.78 in Mississippi to 1.35 in Hawaii.

On top of that, each of the 50 state pages carries local factors that genuinely change the cost: frost depth, which sets how deep posts and footings have to go; soil conditions, which affect excavation difficulty; and permitting posture, which varies enormously between states.

Every line item is shown with the assumption behind it. If our estimate says $1,980 for labor, it also says which multiplier was applied and what terrain was assumed. You can check the arithmetic, disagree with an assumption, and adjust the inputs accordingly.

Why every estimate is a range

We show a low and a high figure rather than a single number, because a single number for a project nobody has surveyed would be false precision. The low end assumes straightforward access, level ground and an efficient crew. The high end assumes obstacles, difficult access, or premium material grades.

Real quotes from real contractors will land somewhere in that band most of the time, and outside it some of the time, because a contractor has seen your site and we have not. Use the range to plan a budget and to sanity-check a quote, not as a substitute for one.

Data sources

US Bureau of Labor Statistics, regional wage data for construction and extraction occupations, used to derive the state labor multipliers.

US Department of Energy, climate zone assignments and the recommended R-values by zone and building assembly published through the Energy Saver program.

Manufacturer specifications, published bag yields from QUIKRETE and Sakrete, R-value per inch figures for insulation materials, and manufacturer warranty periods used for material lifespan.

Retail and trade pricing surveys, 2026 material pricing at national retail and lumberyard levels.

Cost data is reviewed periodically. Construction pricing moves, and a figure that was accurate last year may not be accurate this year, which is one more reason to treat these as planning estimates.

How we make money

CostlyHome is supported by display advertising through Google AdSense. We do not sell your information, because we do not collect it. We do not accept payment from contractors for placement, and no contractor appears on this site.

That model has a useful property: our incentive is to give you a genuinely accurate estimate you will come back for, rather than to extract a phone number. A lead-gen site makes money whether or not the estimate was any good.

What this is not

These are planning estimates, not professional quotes. We have not seen your property, your soil, your access constraints, or your local code officials. A real quote requires a site visit.

Nothing here is engineering advice. Structural decisions, footing sizing, ledger attachment, span tables, load calculations, should come from your local building department or a licensed professional. Our calculators tell you what things cost, not whether your design is sound.

Always confirm permit requirements with your local building department before buying material. Requirements are set locally and change, and the guidance on our state pages is a starting point rather than the final word.