Reader-first rules
- Formulas and results are not adjusted to favor a vendor, product, or outcome.
- Any future affiliate link, sponsorship, or paid placement must be labeled near the offer.
- Commercial relationships do not change calculator formulas.
- Readers should verify permits, tax eligibility, insurance language, written scopes, and safety requirements with qualified local professionals.
Estimate limits
Local rates, freight, site conditions, labor, financing, insurance, taxes, and regulations change. A clean result is still only a planning estimate.