Practical rules for greener homes

Understand the rules behind greener homes.

Source-linked explanations for homeowners navigating energy upgrades, property rules, and practical next steps.

Start with a focused question.

Each guide answers one practical issue, identifies important limits, and links to the controlling public sources.

California

Learn what an association may restrict, how the 45-day response rule works, and what extra requirements may apply to shared roofs.

Official California sources checked July 23, 2026

Plain-language explanations stay close to the cited rules and make uncertainty visible.

Important legal and regulatory claims link to government materials rather than unsourced summaries.

Each page explains what it covers, what it cannot decide, and when individual advice may be useful.

Published guides show when their sources were checked and when another review is scheduled.