Room Addition Contractor & ADU Construction in Los Angeles
Need more space at home? LevelWorks builds room additions and Accessory Dwelling Units (ADUs) for homeowners across Greater Los Angeles. Whether you're adding a bedroom, building a second story, or constructing a standalone ADU for rental income or family living—we handle every step from design and permits through construction and final inspection.
ROOM ADDITION HIGHLIGHTS
Room addition
Plans & Design
Block walls and fance
Backsplashes
3d design
Electrical
Plumbing
Flooring
Paint
Sun room
Sealing & Isolation
Shelving
Custom Home Additions Across Greater Los Angeles
We build all types of home additions for LA homeowners—from single rooms to full second-story expansions. Every project is custom-designed to match your home's architecture and maximize your available lot space.
Bedroom & Master Suite Additions
We extend your home's footprint to add one or more bedrooms, including full master suite additions with en-suite bathrooms, walk-in closets, and custom finishes. Ideal for growing families in LA's expensive housing market where moving isn't always the right answer.
Second-Story Additions
When lot space is limited, building up is smarter than building out. LevelWorks designs and constructs full or partial second-story additions that nearly double your living space while staying within your property's existing footprint. We handle all structural engineering, framing, roofing, and interior finishing.
Garage Conversions & Detached Additions
Converting an existing garage or building a detached room addition is one of the most cost-effective ways to add livable square footage in Los Angeles. We convert garages into bedrooms, offices, gyms, or full ADUs—with proper insulation, HVAC, electrical, and plumbing where needed.
ADU Construction & Second-Story Additions
An Accessory Dwelling Unit (ADU) is a self-contained living space — with its own kitchen, bathroom, and entrance—built on the same lot as your primary home. California's ADU laws (SB 9, AB 68) now allow most LA homeowners to build one or more ADUs, making them one of the fastest-growing property investments in the region.
LevelWorks builds standard ADUs (up to 1,200 sq ft), Junior ADUs (JADUs—conversions within your existing home footprint, up to 500 sq ft), and garage-to-ADU conversions. We manage the entire process: design, LADBS permitting, foundation, framing, plumbing, electrical, and finishes.
Why LA homeowners build ADUs: generate rental income, house aging parents or adult children, increase property resale value, and take advantage of LA's streamlined ADU permitting process.
We Handle LA ADU Permitting
ADU and room addition projects in Los Angeles require approval from the LA Department of Building and Safety (LADBS). The permitting process typically takes 4–12 weeks depending on project type.
LevelWorks manages everything: architectural drawings, structural engineering calculations, permit submission, plan check responses, and final inspections. You never have to deal with the city directly.
Room Addition & ADU FAQs
Can I build an ADU on my Los Angeles property?
Yes. California's ADU laws (SB 9 and AB 68) allow most single-family homeowners in Los Angeles to build one or more ADUs on their property. LevelWorks guides you through zoning checks, design, permitting, and construction from start to finish at no upfront cost to consult.
How much does a room addition cost in Los Angeles?
Room additions in LA typically cost $150–$350 per square foot depending on finishes, structural complexity, and site conditions. A standard 400 sq ft addition ranges from $60,000–$140,000. New detached ADU builds run $100,000–$250,000+. Contact LevelWorks for a free, site-specific estimate.
How long does a room addition take to build in Los Angeles?
Most room additions take 3–6 months from design approval to completion. Permitting through LADBS typically takes 4–8 weeks on top of construction time. ADU builds may take slightly longer depending on scope and utility connection requirements. LevelWorks gives you a realistic timeline before any work begins.
Does LevelWorks handle ADU and room addition permits in Los Angeles?
Yes. We manage the entire LADBS permitting process for every project—architectural plans, structural calculations, permit submission, plan check responses, and final inspections. You don't need to navigate city bureaucracy on your own.
What is the difference between a room addition and an ADU?
A room addition expands your existing home's living space. It's still part of the main structure. An ADU is a fully self-contained unit with its own kitchen, bathroom, and entrance, built on the same lot. LevelWorks builds both, and we help you decide which option best fits your goals and budget.
