“Mkhitar and Alex are fantastic”
Tiffany YuBathroom remodeling
Read full review on Google 
(747) 257-5457More room. Same place to call home.
Room & Home Additions in the San Fernando Valley
Licensed design-build contractor. We handle design, permits and construction — one team from plans to final inspection.
CSLB #1109001 · 5.0 on Google · 5.0 on Thumbtack · 4.7 on Yelp
What we build
- Bedroom additions
- Family room and living room additions
- Bedroom + bathroom suites
- Second story additions
- Kitchen expansions and bump-outs
A clear starting point
How much does a room addition cost in Los Angeles?
Most room additions in the San Fernando Valley cost $300–$500 per square foot, depending on size, foundation, plumbing, finishes and permit requirements. A 12x12 bedroom typically starts around $45,000–$70,000; additions with a bathroom cost more. We give a written, itemized estimate after a site visit.
Get an exact estimate for your homeHow it works
- 01
Free consultation and site visit
- 02
Design and engineering
- 03
Permits with the city (LADBS / LA County)
- 04
Construction and final inspection
Recent project
A permitted addition. A real BFF project.
Fontana · 281 sq ft permitted home addition. Explore the construction process and the finished space.
View the Fontana addition
Reviews
Reviews from our clientsTheir projects.
Their projects.
Their words.
See what homeowners say about our work, then read the full reviews on the original platforms.
“The quality of their work was outstanding”
Ser GoBathroom remodeling
Read full review on Google “Would definitely hire them again and recommend!”
Rosie L.Balcony resurfacing
Read full review on Thumbtack Selected review excerpts. Ratings and review counts as of October 16, 2026. Thumbtack includes reviews imported from other platforms; review counts are not combined.
Tell us about your projectAreas we serve
- Sylmar
- San Fernando
- Granada Hills
- Porter Ranch
- Mission Hills
- Northridge
- Chatsworth
- Pacoima
- Arleta
- Panorama City
- North Hills
- Van Nuys
- Sherman Oaks
- Encino
- Reseda
- Sun Valley
- Burbank
- Santa Clarita
Frequently asked questions
Do I need a permit for a room addition in Los Angeles?
Yes. Almost every addition needs a building permit; we prepare plans and handle the permit process.
How long does a room addition take?
Design and permits usually take 2–4 months; construction of a single-room addition usually takes 2–4 months.
Can I live in the house during construction?
In most cases, yes. We keep the work area separated and the house usable.
Do you work from my existing plans?
Yes. If you already have approved plans, we can start from them.
Make room for what comes next
Let’s talk about your home.
Start with a free consultation and site visit.
Call (747) 257-5457