ADU Construction
ADU Construction Experts in Los Angeles CA
Building an ADU in Los Angeles requires hitting the specific city setbacks and Title 24 energy mandates that differ from a main house. Our ADU construction in Los Angeles CA, delivers the structural shell, the separate utility trenching, and the fire-rated exterior envelope required for a legal second unit. We handle the site prep, including the excavation for independent sewer laterals and the installation of dedicated electrical sub-panels. Whether it is a garage conversion or a detached new build, we provide the seismic-rated foundation bolting and the shear wall nailing schedules that city inspectors check before the drywall goes up.
The build process covers the rough-in plumbing and the framing needed to fit a full living space into a compact footprint. We manage the installation of high-efficiency windows, insulated wall cavities, and code-compliant ventilation systems. Our team handles the technical tie-ins to the city infrastructure, ensuring the new unit has its own gas and water lines without overloading the primary residence. We deliver a weather-tight structure that meets all local zoning laws and adds real square footage to the property deed.
Custom ADU Builders for Rental or Family Living
We build high-utility living spaces that maximize 400 to 1,200 square foot floor plans. Our deliverables for custom ADU builders include the installation of independent climate control and full kitchen/bathroom utility stacks. We handle the site logistics of back-lot construction, including getting concrete pumps and lumber into tight spaces without hitting existing fences. We make sure the waterproofing and the roofing systems are integrated to prevent long-term moisture issues in small-scale buildings.
Independent Utility Meters
We set up the gas and electric meters needed for separate tenant billing.
Compact HVAC Systems
We mount and duct the mini-split heat pumps that save interior space.
Fire-Rated Wall Assemblies
We install the Type-X drywall and siding required for units built near property lines.
Acoustic Insulation
We use sound-dampening batts in the walls to give the ADU privacy from the main house.
Frequently Asked Questions
We have to check the slab thickness and often add a new perimeter grade beam to support the weight of the new walls.
We run a new line that either gravity-feeds to the main house sewer or uses a pump system if the yard is lower than the street.
Only if the main house already has them or if the new unit is too far from the street for fire truck access.
Yes. The city assigns a Unit A or a separate number once the permits are pulled for mail and utility billing.