ADU Builder & Home Additions in Temple City, CA
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Last modified: 2026-09-24T00:00:00.000Z
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Image: Open-plan living room and kitchen with polished concrete floors
- Temple City
Design · Permit · Build
ADUs & Additions in Temple City
Detached ADUs, garage conversions and additions, from plans to move-in.
Book a Consultation Call 818-300-2393
Built for Temple City Homes
Walter P. Temple founded the town in 1923, and it has grown into a predominantly residential city organized around two commercial corridors, Las Tunas Drive and Rosemead Boulevard. The ground is relatively flat and the city lies outside any designated fire hazard severity zone, so a backyard here is shaped far more by the zoning code than by slope or brush.
That code limits accessory structures such as pool houses and workshops to one per lot, caps their combined size, and holds pools and spas at least five feet from side and rear property lines. With Planning approval required before building plan check, a zoning review is the natural first step for a new pool, a pool house or an addition.
In the R-1 single-family zone, any newly created lot must be at least 7,200 square feet, and a flag lot subdivision is limited to one flag lot and needs an original parcel with at least 80 feet of street frontage and 210 feet of depth. Lot coverage is capped at 0.275 times lot area plus 1,125 square feet, and at least 35 percent of a 7,200 to 9,999 square foot lot must stay permeable, which limits how much of a yard can go to solid paving.
We are a design-build team, which means the people who draw your project are the people who build it. Design, engineering, permits and construction run through one project manager and our own crews, so nothing gets lost in a handoff between a salesperson and a subcontractor. We are licensed, bonded and insured, CSLB license #1119054 .
Permits in Temple City: Residential permits are issued by Building & Safety, part of the Community Development Department, at City Hall, 9701 Las Tunas Drive. A project must be approved by the Planning Division before its plans are submitted online for building plan review, so a new pool, pool house or addition begins with a zoning check.
In the R-1 zone, an accessory structure with plumbing, such as a pool house with a bathroom, requires a conditional use permit, and pools and spas need five-foot side and rear setbacks and ten feet on a street side yard.
Permit details checked September 2026 against City of Temple City and Temple City Municipal Code . Rules change, so we confirm them again for your parcel.
What We Build
- Planning review ahead of pool plan check
- Conditional use permits for plumbed pool houses
- One-per-lot accessory structure planning
- Cross-lot drainage and grade matching
- Detached ADUs, ground-up
- Garage conversions to living space
- Junior ADUs within the main house
- Room additions and bump-outs
- Second-story additions
- Full kitchens and bathrooms in the ADU
- Separate utility metering where required
- Private entries, patios and landscaping
- Plans, engineering and city submittals
- Title 24 energy compliance
Local Conditions
What to Know in Temple City
These local conditions change the scope, the schedule and the budget.
01
The city is relatively flat, with no major slopes or bluffs. For new construction, the code requires a lot to keep accepting any cross-lot drainage that already flows onto it and, where the finished grade leaves those drainage patterns unchanged, to stay within eight inches of the grade of adjacent sites.
02
Temple City is not located within any designated Fire Hazard Severity Zone, and the updated state maps propose no change for the city.
03
Where an alley or utility easement runs along the rear of the lot, at least ten feet at the rear lot line must stay clear of buildings and structures except a fence with an access gate, which pushes a pool house or cabana farther forward than the usual five-foot rear setback for accessory structures.
04
New generators, air conditioning units and condensers must sit at least ten feet from neighboring bedroom windows, a rule that does not apply to replacement units and that shapes where such equipment can go along a side yard.
Areas we serve in Temple City:Original 1923 townsiteDowntown Las Tunas DriveTemple City Park areaLive Oak Park areaRosemead Boulevard corridor
Investment
What It Costs in Temple City
Real Southern California price ranges, not teaser numbers.
Detached ADU
$150,000 to $400,000+
What moves it: square footage, finish level, utility runs, and site access; garage conversions typically run well below a ground-up detached build
Garage conversion ADU
$80,000 to $180,000
What moves it: whether the existing slab and framing meet current code, how far utilities have to run, and the finish level of the kitchen and bathroom
Plans, drawings and permit management
$4,500 to $25,000+
What moves it: project type and size, whether structural engineering, Title 24 or a soils report is required, and how many jurisdictions or review bodies are involved
Your lot, access and finishes set the price. We walk the site, then show you where every dollar goes.
Get a line-item price for your Temple City property
The Process
How We Work in Temple City
01
Feasibility
We check lot size, setbacks, utilities and access to confirm what your property will actually support.
02
Design & 3D
Layout, elevations and finishes, modeled in 3D so you approve the unit before submittal.
03
Plans & Permits
We prepare the full drawing set, handle engineering and Title 24, and manage the city submittal and corrections. In Temple City that submittal goes to City of Temple City Community Development Department, Building & Safety Division.
04
Foundation & Framing
Site prep, foundation, framing and dry-in by our own crews.
05
Systems & Finishes
Electrical, plumbing, HVAC, insulation, then kitchen, bath and interior finishes.
06
Final Inspection
We pass final inspection, walk the unit with you and hand over the keys.
Questions
What Temple City Homeowners Ask
Who issues the permits for this work in Temple City?
City of Temple City Community Development Department, Building & Safety Division. Residential permits are issued by Building & Safety, part of the Community Development Department, at City Hall, 9701 Las Tunas Drive. A project must be approved by the Planning Division before its plans are submitted online for building plan review, so a new pool, pool house or addition begins with a zoning check.
In the R-1 zone, an accessory structure with plumbing, such as a pool house with a bathroom, requires a conditional use permit, and pools and spas need five-foot side and rear setbacks and ten feet on a street side yard. We prepare the drawings, make the submittal and handle plan-check corrections ourselves, so you are not the one chasing plan check.
What makes building in Temple City different?
In the R-1 single-family zone, any newly created lot must be at least 7,200 square feet, and a flag lot subdivision is limited to one flag lot and needs an original parcel with at least 80 feet of street frontage and 210 feet of depth. Lot coverage is capped at 0.275 times lot area plus 1,125 square feet, and at least 35 percent of a 7,200 to 9,999 square foot lot must stay permeable, which limits how much of a yard can go to solid paving.
One local condition that shapes the work: The city is relatively flat, with no major slopes or bluffs. For new construction, the code requires a lot to keep accepting any cross-lot drainage that already flows onto it and, where the finished grade leaves those drainage patterns unchanged, to stay within eight inches of the grade of adjacent sites.
Which parts of Temple City do you work in?
All of it, including Original 1923 townsite, Downtown Las Tunas Drive, Temple City Park area and Live Oak Park area. Our crews run every job out of our Cahuenga Pass base in Los Angeles, with our own people on site.
What does an ADU or addition cost in Temple City?
Detached ADU: generally $150,000 to $400,000+ across Southern California. What moves it is square footage, finish level, utility runs, and site access; garage conversions typically run well below a ground-up detached build. We give line-item pricing after seeing the site rather than quoting a number over the phone.
How long does an ADU take start to finish?
Plan a realistic year. Design and engineering typically take one to three months, city plan check and corrections add several more, and construction usually runs four to eight months depending on size and site access.
Is a garage conversion cheaper than a detached ADU?
Usually yes, and often substantially, because the foundation, walls and roof already exist. The trade-offs are that you lose the garage, and older slabs and framing sometimes need upgrading to meet current code.
Can I rent the ADU out?
California ADU law is designed to allow long-term rental, and an ADU is one of the few ways to add rentable square footage to a single-family lot. Short-term rental rules vary by city, so confirm your local ordinance before counting on that income.
Do you handle the permits?
Yes. Plans, engineering, Title 24 and the city submittal are all handled in-house, including responding to plan-check corrections. That is a service we sell on its own, so it is not something we hand off.
More Services in Temple City
Pool & Spa Remodeling in Temple City Backyard & Outdoor Living in Temple City Everything we build in Temple City
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Planning Guides
Before You Build in Temple City
Costs, materials and process notes from our own projects.
ADU Cost Breakdown by Size in Los Angeles A detached ADU in Los Angeles runs $150,000 to $400,000-plus. Here is the real cost broken down by unit size, with the soft costs, utility work and finish decisions that move the number. Read guide Garage Conversion to ADU: The Step-by-Step Build A garage conversion runs $80,000 to $180,000 in Southern California. Here is the real sequence, from slab testing and plan check to the raised floor, the mini-split and final sign-off. Read guide ADU Rental Income Math in the San Fernando Valley A one-bedroom ADU in the San Fernando Valley rents for roughly $2,100 to $2,900 a month. Here is the honest arithmetic on payback, carrying costs and what the unit adds to the property. Read guide Second Story Addition vs Building Out: Which Costs Less Building out runs $350 to $500 per square foot. Going up runs $450 to $700. Here is when the cheaper option is actually the wrong one, and what drives each number. Read guide
Planning an ADU in Temple City?
Sit down with your project manager and get an accurate estimate. We call you back within one business day.
Book a Consultation 818-300-2393
Licensed, bonded & insured · CSLB license #1119054
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