Types of Additions We Build
- Room additions: Extra bedroom, family room, home office, or playroom
- Second story additions: Double your living space on the same footprint
- Bump-outs: Extend an existing room by 4-10 feet for more breathing room
- Sunrooms and enclosed patios: Year-round indoor-outdoor living
- Master suite additions: Bedroom + bathroom + walk-in closet
Home Addition Costs in the SGV (2026)
- Room addition (200-400 sq ft): $80,000 – $160,000
- Second story addition: $150,000 – $350,000+
- Master suite addition: $100,000 – $200,000
- Bump-out (50-100 sq ft): $30,000 – $60,000
Addition vs. ADU — Which Is Right?
If you need more living space for your family, a home addition is usually the better choice — it's connected to your home and shares HVAC, plumbing, and electrical. If you want rental income or a separate living space for extended family, an ADU is the way to go. We can help you evaluate both options during a free consultation.
Ready to Start Your Home Additions Project?
Call (626) 244-6104 for a free estimate, or fill out our contact form. Licensed & bonded — CSLB #1150423.