What Permits Do I Need for a Home Addition?

Home additions usually require zoning review plus building permits and trade permits, with inspections at defined construction stages.

The short answer

The exact list depends on the address, addition type, utilities, and local rules. Additions can affect foundations, rooflines, drainage, HVAC capacity, electrical service, and the way old and new spaces connect.

What changes the answer for a DMV home

Setbacks, lot coverage, grading, stormwater, historic review, and HOA approval may affect feasibility before construction documents are complete. Permit requirements are address- and scope-specific. Confirm current rules with the local authority; HOA or historic review may be separate from government approval.

What to review before requesting a proposal

• The rooms or problems the project must solve
• Existing conditions that may affect structure or building systems
• Product, finish, storage, accessibility, and layout priorities
• Permit, HOA, parking, access, or occupied-home constraints
• A comfortable investment range and contingency for unknown conditions

How to compare the options

Compare complete scope rather than isolated prices. Check what is included, what remains an allowance, who coordinates permits and inspections, how changes are approved, and what conditions could alter the schedule.

A practical next step

Collect photos, measurements, inspiration, known property documents, and a short list of must-haves. An on-site consultation can then focus on feasibility and scope instead of guessing from averages.