Room Additions in Los Angeles
Bedrooms, second stories, and full expansions, engineered and matched to your existing home so the addition looks like it was always there.
Additions that look original, not bolted on.
A great addition disappears into the home. We manage structural engineering, permits, and foundation work, then match rooflines, finishes, and details so the new square footage feels seamless, on a fixed price with your timeline protected.
- Bedroom & bathroom additions
- Second-story additions
- Structural engineering & foundation
- Roofline & exterior matching
- Full systems (HVAC, electrical, plumbing)
- Permits & inspections handled
Design & Engineering
Consult, structural plans, and a fixed itemized proposal.
Permits & Demo
We pull permits and protect your home, then demo cleanly and safely.
Build
Foundation, framing, systems, and finishes by in-house crews.
Reveal
Final walkthrough, punch list, and a 10-year workmanship warranty.
Craftsmanship you can see.
What a room addition costs in Los Angeles
LA room additions typically price between $300 and $500 per square foot, so a bedroom and bath addition often lands between $80,000 and $200,000 depending on size, systems, and finishes. Ground-floor additions cost less per foot than second stories, which need structural work below. Where the addition ties into existing plumbing and electrical also moves the number.
After a site visit you get one fixed, itemized price, including engineering, permits, and finishes, before any work starts.
Zoning, setbacks, and permits
Every addition has to respect your lot's setbacks and coverage limits, and hillside parcels in the Valley add their own rules. We check zoning before we design, so you are never paying for plans the city will reject. Structural engineering, permits, and inspections are all part of the project, handled by us.
An addition should look original
The difference between a good addition and an obvious one is the tie-in: matching rooflines, stucco texture, window styles, and floor heights so the new space reads as part of the original house. That match is a core part of how we build, and it is also what protects your resale value. Most additions run 3 to 6 months from permit to completion.
Room Additions FAQ.
How much does a room addition cost in Los Angeles?
How long does a room addition take?
Do you handle permits and engineering?
Can you match my existing home?
Which neighborhoods do you serve?
Ready to start?
Book a free on-site consult, we'll scope it and hand you a fixed, itemized price.