Research
- Regulations and permits: we summarize the rules published by the NYC Department of Buildings, DCWP, LPC, DOT, the NY Department of State and state licensing agencies. Rules change, so we always recommend confirming with the agency before you act.
- Costs: our ranges come from published national cost data, reviewed against several estimates. We do not invent prices, and we present ranges rather than single figures because local prices vary widely.
- Formulas: calculator formulas follow standard geometry and published product data (for example, bag yields from manufacturer data sheets).
Reviews
We review cost ranges and rule summaries regularly and update pages when prices or rules change. Our most recent full review was completed on October 28, 2026.
What we avoid
- Presenting estimates as guaranteed results or quotes
- Legal or structural advice — we point you to the agency or a licensed professional
- Fake reviews, testimonials or invented credentials
Corrections
If you find an error, email contact@constructioninny.com with the page URL and what should change. We review every report and update the page when we make a change.
Advertising and independence
Advertising, if shown, is placed by an ad network and is clearly separated from content. Ads are never placed between calculator inputs and results. Advertisers do not review or approve content.