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Practical rules for greener homes

Know the rules before you improve your home.

Choose your state and project to see what the rule protects, what approval may still be required, which documents to gather, and where to verify the official source.

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Choose your state, property type, project, and situation to find the rule, approval steps, documents to gather, and official sources.

Results are reviewed guides only. The finder does not generate individualized legal advice or a legal conclusion.

Popular homeowner questions

Can a California HOA ban rooftop solar?

Usually, no. California law makes HOA governing-document provisions void when they effectively prohibit or restrict a solar energy system, subject to reasonable restrictions and to safety, permitting, and utility requirements.

California Solar and solar access Sources checked 2026-08-16 Recently updated

Recent rule change: United States

Under the One Big Beautiful Bill Act (Public Law 119-21, enacted July 4, 2025), the Energy Efficient Home Improvement Credit (section 25C) is not allowed for property placed in service after December 31, 2025, and the Residential Clean Energy Credit (section 25D) is not allowed for expenditures made after December 31, 2025. IRS FAQs published August 21, 2025 (IR-2025-86) confirm the termination dates. Work completed in 2025 or earlier may still qualify under the rules in effect for that year. Source checked 2026-08-16. Read the update.

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Recently source-checked guides

Can a Hawaii HOA restrict rooftop solar?

Usually, no. Hawaii Revised Statutes §196-7(a) protects an owner of a single-family dwelling or townhouse from a private agreement that prevents installation of a solar energy device. The protection does not remove design, registration, contractor, insurance, roof-warranty, permit, utility, or property-ownership conditions.

Hawaii Solar and solar access Sources checked 2026-09-04 Recently updated

What rules apply to a Hawaii condominium's solar, battery, or EV-charging project?

A Hawaii condominium owner needs written board consent for a solar-energy-device installation under HRS §514B-140(c)(1). Larger or material alterations can also require the approvals described in §514B-140(b), and a project affecting a common element, limited common element, electrical system, or shared roof needs a property-specific review. Local permits and utility requirements are separate.

Hawaii Home batteries and backup power Sources checked 2026-09-04 Recently updated

What permits and utility approvals do I need for residential solar in Arizona?

Arizona residential solar usually requires a local permit and inspection path plus a separate utility interconnection approval. HOA, ownership, and contract questions are separate layers. The exact permit, code edition, fees, utility process, and approval sequence depend on the city or county, project design, property documents, and electric provider; verify them for the address before work begins.

Arizona Permits, codes, and inspections Sources checked 2026-08-18

Can an Arizona HOA restrict solar panels?

Usually not by an outright ban. For a planned community, A.R.S. § 33-1816 bars an association from prohibiting a defined solar energy device, but permits reasonable placement rules that do not prevent installation or impair the device; condominiums, common elements, local codes, utilities, and older deed instruments require separate analysis.

Arizona Solar and solar access Sources checked 2026-08-18

California solar panels on a shared condominium roof

California Civil Code sections 714 and 714.1 generally bar an effective prohibition of a compliant household rooftop solar system, but a condominium association may impose reasonable common-area, roof-maintenance, approval, and indemnity provisions. The roof's legal classification, local permits, and the written approval record still matter.

California Solar and solar access Sources checked 2026-08-18

California trees, shade, and solar access

California's Solar Shade Control Act applies narrowly to post-installation tree or shrub shading of a solar collector: more than 10 percent of the collector absorption area between 10 a.m. and 2 p.m. local standard time.

California Solar and solar access Sources checked 2026-08-18

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