The problem we're solving
Search "window replacement cost" and you'll find a handful of online calculators. Try them, then collect quotes from real contractors. The numbers don't match — and they don't match in consistent, predictable ways. The existing calculators are typically 30–50% off real contractor pricing, sometimes high, more often low. Then they ask for your email address.
This isn't an accident. The category is dominated by lead-aggregator businesses — sites whose actual product is selling your contact information to contractors. The "calculator" is a content-marketing surface designed to capture an email, not to give you accurate information. Cost data is approximate at best because that's not what the tool exists to do.
Homeowners making five- or six-figure spending decisions deserve a research tool, not a lead funnel. We built remodelmath to be that tool.
Our approach
Three commitments shape every calculator we publish:
- Methodology-first. Every calculator publishes a methodology page that names every data source, documents every assumption, and reports the calculator's accuracy against real contractor quotes. If we can't cite where a number comes from, we don't use the number.
- Real installer pricing. Cost data is calibrated against 12,400+ verified installer quotes plus public construction-wage data (BLS Occupational Employment and Wage Statistics) and industry cost reports (NAHB Cost of Constructing a Home). Refreshed quarterly.
- Calibrated confidence. Every estimate ships with an explicit confidence band (typically ±18%). When we don't have good data for a state or a configuration, we say so — we don't paper over uncertainty with false precision.
And what we deliberately don't do:
- No email gates. The calculator's results show without any signup.
- No contractor partnerships at v1. We don't take payment to surface specific installers.
- No premium tier, no review tier, no upsell.
- No retargeting trackers, no behavioral profiles, no cross-site tracking.
Who we are
remodelmath is a small team led by founder Mike Shaw, with industry contributors joining as the team grows. We're builders, researchers, and homeowners who got frustrated with how opaque home-improvement pricing is — and decided the right response was to build a better tool, not write another think-piece about how the existing tools are bad.
The site is operated by eView Technologies, Inc., a Virginia corporation. Full company information appears on the Terms of Service page. The privacy practices for the site are documented on the Privacy Policy; for accessibility commitments, see the Accessibility Statement.
What we publish
At v1 launch, remodelmath publishes one calculator (window replacement cost) with its methodology page. Additional calculators ship as we research each home-improvement vertical — roofing, flooring, kitchen, bathroom, HVAC, decking, painting, and others — applying the same methodology discipline to each.
We're not in a rush. Shipping a calculator that's 30% off real prices defeats the entire point of the project. Each new calculator goes through the same data-sourcing, methodology-documentation, and accuracy-calibration cycle as the first one.
Reach us
Questions, accuracy feedback, methodology critiques, or partnership inquiries — email us via the Contact page. We read every message and update our methodology pages when feedback surfaces something worth updating.