ADU & Room Addition

SoCal's #1 Remodeling Opportunity

Add a legal dwelling unit, convert your garage, or expand your home — and increase property value while creating rental income or space for family. BRC handles the full scope: design, permits, foundation, framing, MEP, and finish.

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Detached ADU

New standalone unit in your backyard. Up to 1,200 sq ft. Full kitchen, bath, living — completely independent. Highest rental income potential.

Starting Range

$150,000 – $350,000+

Varies by size, finishes & site conditions

Garage Conversion

Convert your existing garage into a legal ADU. Fastest path to a permitted unit — no new foundation required. No size limit if existing footprint is maintained.

Starting Range

$60,000 – $150,000

Depends on garage size & current condition

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Room Addition

Expand your existing footprint — master suite, family room, extra bedroom, second story. Permitted structural addition with full MEP and finish work.

Starting Range

$150 – $300+ / sq ft

Size, complexity & finish level

California ADU Law — What You Need to Know (2025–2026)

✓ Every single-family lot can have 1 ADU + 1 Junior ADU — by right, no discretionary approval

✓ No owner-occupancy required — rent out both your main home and ADU

✓ ADUs under 750 sq ft are exempt from city impact fees

✓ City must approve or deny within 60 days of complete application

✓ CalHFA ADU Grant — up to $40,000 toward pre-development costs for qualifying homeowners

✓ Pre-approved ADU plans available in most SoCal cities — speeds up permit timeline significantly

Every ADU project starts with a site review — we assess your property, confirm zoning, and give you a real scope and timeline.

Schedule a Site Review → Ask the BRC Assistant