New Addition & New Construction Designed for What You Need Next
Whether you need a second story, a room addition, or a ground-up new build — we design and build additions that feel like they were always part of the home. One team, one contract, from structural engineering through certificate of occupancy.
Who This Service Is For
Homeowners Ready to Expand
You love your neighborhood and your lot. You need more space — more bedrooms, an office, a suite — without the disruption of moving. An addition gives you exactly what is missing.
Growing Families
You love your neighborhood and your lot. You need more space — more bedrooms, an office, a suite — without the disruption of moving. An addition gives you exactly what is missing.
Real Estate Investors
You love your neighborhood and your lot. You need more space — more bedrooms, an office, a suite — without the disruption of moving. An addition gives you exactly what is missing.
SIGNATURE MOMENTS
What separates a true addition from a cosmetic renovation.
Structural integration
Plumbing, electrical, and HVAC designed together — not retrofitted room by room. Systems that work as a single home.
Permit-first design
Every addition starts with a buildable permit set. We don't design what we can't build. Zoning, setbacks, and structural requirements are confirmed before design begins.
Single-team delivery
One GC. One point of contact. No finger-pointing between trades when something needs resolution.
ENGAGEMENT MODEL
Three phases. Every addition. No handoffs.
Flat-fee at every phase. You know the total investment before work begins.
PHASE 01
Discovery
We assess your entire home — structure, systems, layout — and align the scope to how your household actually lives.
PHASE 02
Design
Architectural and structural design coordinated with your existing home. Engineering, MEP planning, and finish selections resolved before permit filing.
PHASE 03
Construction
Foundation through finishes, managed by one team. You stay informed at every milestone through final inspection and certificate of occupancy.
Second-Story Addition
Adding a full new floor to your existing home. New bedrooms, bathrooms, and living space — structurally integrated with the original build. Permits, engineering, and construction under one team.
Single-Story Room Addition
Expanding your home’s footprint with a new room or suite. Primary bedrooms, home offices, and family room expansions — designed to match your existing architecture and built under one contract.
Ground-Up New Construction
Full demolition and rebuild on an existing lot, or building on a vacant parcel. New foundation, framing, MEP systems, and all finishes — delivered under one design-build contract.
Attached Structure & Garage Addition
Adding living space above or adjacent to an existing garage or structure. Flex space, guest suites, and home office additions that maximize your lot without a full footprint expansion.
The Old Way
- Separate designer and contractor
- Unclear budgets and change orders
- Delays caused by poor coordination
- Limited accountability when problems arise
Our Design-Build Approach
- One integrated team from concept to completion
- Clear scope, transparent pricing, and realistic timelines
- Fewer delays and better communication
- Full responsibility for design, permits, and construction
Why an Addition Is Worth It
Increase Property Value
A well-designed home renovation consistently delivers one of the highest returns on investment in residential construction.
Improve Daily Functionality
Better layouts, improved lighting, and modern appliances transform how the space is actually used.
Modernize the Look and Feel
Clean lines, updated finishes, and thoughtful design create a kitchen that feels current and timeless at the same time.
PROCESS AT A GLANCE
One team. One timeline.
Every trade coordinated under one contract. No gaps, no handoffs.
STAGE 01
Discovery
2–4 weeks
Site assessment, zoning review, structural feasibility, scope alignment.
STAGE 02
Design
6–12 weeks
Architectural design, structural engineering, MEP planning, material selections.
STAGE 03
Permit
3–8 weeks
Permit drawings, structural and MEP approvals, city submission.
STAGE 04
Build
4–12 months
Foundation, framing, rough-in, exterior, interior finishes through certificate of occupancy.
Permit discipline becomes the foundation.
In Los Angeles, a new addition lives or dies on the entitlement plan. WDC holds structural, MEP, and Title 24 inside one drawing set — so the build crew never finds a surprise the permit didn’t already anticipate.
What to Expect During a New Addition Remodel
New Addition and New Construction in Los Angeles often requires complex permitting and inspections through local authorities. Our team handles the permitting process and ensures compliance with all relevant regulations.
Typical project timelines vary depending on scope, materials, and approvals, but we always provide realistic expectations upfront so there are no surprises.
What Impacts the Cost of a New Addition Remodel
- One integrated team from concept to completion
- Clear scope, transparent pricing, and realistic timelines
- Fewer delays and better communication
- Full responsibility for design, permits, and construction
- One integrated team from concept to completion
- Clear scope, transparent pricing, and realistic timelines
- Fewer delays and better communication
- Full responsibility for design, permits, and construction
Professional Tips
Increase Property Value
A well-designed home renovation consistently delivers one of the highest returns on investment in residential construction.
Improve Daily Functionality
Better layouts, improved lighting, and modern appliances transform how the space is actually used.
Modernize the Look and Feel
Clean lines, updated finishes, and thoughtful design create a kitchen that feels current and timeless at the same time.
Increase Property Value
A well-designed home renovation consistently delivers one of the highest returns on investment in residential construction.
Improve Daily Functionality
Better layouts, improved lighting, and modern appliances transform how the space is actually used.
Modernize the Look and Feel
Clean lines, updated finishes, and thoughtful design create a kitchen that feels current and timeless at the same time.
What Our Clients Say
Over 150 five-star reviews
Over 85 five-star reviews
Over 20 five-star reviews
We Do Construction, Inc.
Featured New Addition Projects
New Addition and New Construction in Los Angeles requires a contractor who handles structural engineering, LADBS permitting, architectural design, and multi-trade coordination under one team — not a series of subcontractors handed off between phases.
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Areas We Serve
Serving Los Angeles and Surrounding Areas
FAQ
Yes — we handle all permits for additions and new construction in-house. In Los Angeles, projects go through LADBS; in San Francisco, through SF DBI. Permit timelines typically run 4–12 weeks depending on scope and jurisdiction.
Yes — we handle all permits for additions and new construction in-house. In Los Angeles, projects go through LADBS; in San Francisco, through SF DBI. Permit timelines typically run 4–12 weeks depending on scope and jurisdiction.
Yes — we handle all permits for additions and new construction in-house. In Los Angeles, projects go through LADBS; in San Francisco, through SF DBI. Permit timelines typically run 4–12 weeks depending on scope and jurisdiction.
Yes — we handle all permits for additions and new construction in-house. In Los Angeles, projects go through LADBS; in San Francisco, through SF DBI. Permit timelines typically run 4–12 weeks depending on scope and jurisdiction.
Yes — we handle all permits for additions and new construction in-house. In Los Angeles, projects go through LADBS; in San Francisco, through SF DBI. Permit timelines typically run 4–12 weeks depending on scope and jurisdiction.
Yes — we handle all permits for additions and new construction in-house. In Los Angeles, projects go through LADBS; in San Francisco, through SF DBI. Permit timelines typically run 4–12 weeks depending on scope and jurisdiction.
Yes — we handle all permits for additions and new construction in-house. In Los Angeles, projects go through LADBS; in San Francisco, through SF DBI. Permit timelines typically run 4–12 weeks depending on scope and jurisdiction.
Yes — we handle all permits for additions and new construction in-house. In Los Angeles, projects go through LADBS; in San Francisco, through SF DBI. Permit timelines typically run 4–12 weeks depending on scope and jurisdiction.