1. Build the calculator
Start with a planning estimate that answers a real question before any sales conversation.
Method
Start with the useful answer
A guide should help you think before it asks you to choose a provider. PanelAndPlug topics start with the homeowner's real question, then add calculators, assumptions, and disclosures around the limits of online planning.
2. Explain the assumptions
Say what the estimate is based on, where local rules may matter, and what a professional must confirm.
3. Add local detail only when it helps
City pages should explain real differences in utilities, permits, incentives, costs, housing, or parking.
4. Disclose money relationships
Provider features, affiliate links, paid placement, and contact forms should be clearly labeled.