Los Angeles ยท Los Angeles County
Additions & Remodels in Los Angeles, Los Angeles County
Kitchen, bath, second-storey and whole-house work, designed and permitted properly so the finished result appraises and sells as legal square footage. In Los Angeles that work is reviewed by LADBS plan check, with City Planning sign-off where zoning discretion applies, with LAFD involved where access, alarms or suppression apply. LADBS is not one counter, it is several, and the fastest route through it depends on which district office your address falls under. That is a knowledge problem, not a design problem.
What home addition and remodel design involves in Los Angeles
Los Angeles sits in City of LA, inside Los Angeles County, and plan review runs through LADBS plan check, with City Planning sign-off where zoning discretion applies. The housing stock matters here: enormous range, from 1910s craftsman to 1960s stucco boxes, with lot slopes that decide half the budget. That existing condition, more than any design preference, sets what is straightforward and what is expensive.
Before we draw anything we run a feasibility review against your specific address. For home addition and remodel design that means testing existing conditions survey and as-built drawings, addition and remodel design, structural design for openings, second storeys and foundations, and confirming which of the local overlays apply to your parcel. Getting a no in week one costs you a small fee. Getting a no in month five costs you a design.
Once feasibility comes back workable, we produce a permit set that anticipates how this particular department reads the code, submit it, and manage the corrections ourselves. Typical experience in Los Angeles is roughly 10 to 18 weeks to permit, driven mostly by how many correction cycles the first submittal triggers. On fees, LADBS plan check, LAFD clearance and school fees stack quickly on anything over 1,000 sq ft of new area.
What drives the cost of home addition and remodel design here
Additions generally run roughly $350 to $600 per square foot depending on complexity, with kitchens and baths priced by scope rather than area.
Those ranges are honest averages, not quotes. The variables below are the ones that actually move the number on a Los Angeles project, and they are the first four things we investigate.
Foundation
Adding load to a 1920s foundation usually means underpinning or replacement in the affected area, and that shows up as a real line item.
Roof and structure
A second storey is a structural project with a finish layer, not a finish project. Load path is the first drawing, not the last.
Systems age
Knob and tube wiring, galvanised supply and cast iron waste all get triggered by permitted work. Better to plan for them.
Occupied construction
Living in the house during the work is possible, and it lengthens the schedule. We price both scenarios so you can choose.
Timeline and approvals in Los Angeles
Design and permitting usually takes 3 to 5 months, and construction of a meaningful addition runs 5 to 10 months.
Layered onto that, Los Angeles review typically takes roughly 10 to 18 weeks to permit, driven mostly by how many correction cycles the first submittal triggers. Where one of the local overlays applies, add its process to the front of the schedule rather than assuming it runs in parallel.
We work across Los Angeles ZIP codes 90012, 90026, 90027, 90042, 90066, 91401 and 90016, and the neighbourhoods most represented in our Los Angeles work are Silver Lake, Highland Park, Mar Vista, Sherman Oaks, West Adams, Eagle Rock. Where your parcel sits inside the city changes which overlays and which reviewers you meet.
We give you a written schedule with the approval milestones named, so you can see which dates we control and which belong to an agency. Nobody can compress a hearing calendar. Everybody can submit a complete package the first time, and that is where the recoverable weeks are.
What is included
- Existing conditions survey and as-built drawings
- Addition and remodel design
- Structural design for openings, second storeys and foundations
- Title 24 and energy upgrade compliance
- Permit set, submittal and corrections
- Construction with weekly cost reporting
Additions & Remodels in Los Angeles
Send the Los Angeles address and a sentence about the project. You get a written feasibility answer covering approvals, realistic cost and schedule.
Additions & Remodels in Los Angeles: common questions
Who reviews home addition and remodel design in Los Angeles?
LADBS plan check, with City Planning sign-off where zoning discretion applies, with LAFD reviewing access, alarm and suppression scope where it applies. LADBS is not one counter, it is several, and the fastest route through it depends on which district office your address falls under. That is a knowledge problem, not a design problem.
How long does home addition and remodel design take to permit in Los Angeles?
Expect roughly 10 to 18 weeks to permit, driven mostly by how many correction cycles the first submittal triggers. Design and permitting usually takes 3 to 5 months, and construction of a meaningful addition runs 5 to 10 months. We name the agency-controlled milestones separately in your schedule so you can see what is ours and what is theirs.
What does home addition and remodel design cost in Los Angeles?
Additions generally run roughly $350 to $600 per square foot depending on complexity, with kitchens and baths priced by scope rather than area. Locally, LADBS plan check, LAFD clearance and school fees stack quickly on anything over 1,000 sq ft of new area. We price the three biggest variables at feasibility so the first number you see is close to the last one.
Which local rules commonly affect projects in Los Angeles?
The ones that come up most are: Hillside ordinance and Baseline Hillside limits; HPOZ districts across Highland Park, West Adams and Angelino Heights; Specific plans in Venice, Hollywood and the Warner Center area; Very High Fire Hazard Severity Zone requirements in the canyons. We confirm which apply to your parcel before design rather than discovering one at plan check.
Which Los Angeles ZIP codes do you cover?
We take home addition and remodel design work across 90012, 90026, 90027, 90042, 90066, 91401 and 90016, plus surrounding unincorporated pockets. If your ZIP is not listed, send the address anyway and we will tell you plainly whether we are the right team for it.
Can I add a second storey to my house?
Often yes, subject to height limits, setbacks and whether the existing foundation and framing can carry the load. The foundation answer is the expensive one, so we investigate it during feasibility rather than after design.
Will unpermitted existing work cause a problem?
It can. Once you pull a permit, the department sees the whole property. Unpermitted space usually has to be legalised or removed. We would rather find it in week one and plan for it than have an inspector find it in month six.
Do I need a designer and a contractor separately?
Not with us. We handle design, permitting and construction under one agreement, so there is nobody to blame when a drawing and a field condition disagree.
Other services in Los Angeles
Additions & Remodels in nearby cities
For the full statewide scope of this work, read our additions & remodels service page, or see the Los Angeles service area overview.
Talk to us about a project in Los Angeles
Send the address, including the ZIP code, and what you want to build. We come back with what the LADBS plan check route looks like, a realistic budget range and a schedule.