San Fernando Valley ADU builder

Make room on the property you already own.

BBC ADU helps San Fernando Valley homeowners plan and build detached ADUs, garage conversions, junior ADUs, and additions. We start with the real conditions on your lot, then shape the project around access, utilities, privacy, structure, budget, and the way you want the new space to be used.

General builder license number #720343Residential building scope for ADUs, conversions, and additions.
Established March 199630 years licensed as a California contractor.
Plumbing license in-houseSewer, water, drainage, rough plumbing, and tie-ins are planned with the ADU from the start.

Most ADU decisions start with the lot, not the floor plan.

A good ADU has to work with the home that is already there. The garage condition, side-yard access, sewer and water routes, electrical service, windows, parking, drainage, and privacy all shape what is realistic. BBC ADU helps you understand those pieces before the project is pushed into drawings, pricing, and construction.

Garage

Is the garage a good candidate for living space?

We look at the slab, framing, ceiling height, moisture, openings, insulation, plumbing path, and whether the finished unit will feel permanent instead of patched together.

Backyard

Where can a detached ADU sit without taking over the yard?

Placement has to balance access, privacy, drainage, utility distance, outdoor space, and the way the unit will be used by family, guests, or tenants.

Existing space

Would a junior ADU or addition fit the property better?

Some homes already have a workable room, entry path, or addition opportunity. We compare those options before you commit to the most expensive direction.

ADU work

Compare the ADU options before you commit to one.

Homeowners often arrive with one idea, but a site walk can reveal two or three realistic paths. BBC ADU helps compare the cost, construction work, utility needs, city review, and daily use of each option.

Rolled plans on a jobsite table inside an open framed residential space
Open framing and roof structure during ADU construction

Why the builder matters

Utility planning can decide the layout.

A small unit still needs sewer, water, drainage, rough plumbing, electrical paths, kitchen planning, bathroom planning, inspections, and finish work. Those decisions affect where the bathroom goes, how the kitchen works, how trenching is handled, and what the project will cost.

BBC ADU holds a plumbing license in addition to the general builder license. That means utility routes, cleanouts, drainage, rough plumbing, tie-ins, and inspection sequencing can be discussed early instead of being treated as a surprise later in the build.

  • Sewer, water, and drainage routes reviewed early
  • Garage and backyard access checked before pricing
  • Kitchen, bathroom, and utility locations planned together
  • Construction sequence tied to permits and inspections

Process

Know the build path before the project gets expensive.

The first conversations should make the project clearer: what can be built, what still needs to be verified, what the city will review, and which construction details will shape the budget.

  1. 01Walk the property

    Review access, garage condition, proposed ADU location, utilities, drainage, privacy, parking, and how the space will be used.

  2. 02Choose the right direction

    Compare detached ADU, garage conversion, junior ADU, or addition options against the real site conditions.

  3. 03Coordinate the scope

    Line up drawings, permit questions, major trades, utility work, material direction, inspections, and build sequence.

  4. 04Build the ADU

    Move through site prep, framing, rough utilities, exterior work, interiors, finish details, and final punch list.

Read the full process

Project photos

Look at the space and the work behind it.

Use the gallery to look at finished ADU references, framing, rough construction, and open-shell details. The photos are there to help you understand the kind of work that sits behind a clean finished space.

Finished modern backyard home with patio and lawn
Modern compact backyard home exterior with wood privacy fencing
Residential exterior under construction with scaffolding and roof work
View the project gallery

Local ADU planning

Built for real Valley properties.

ADU projects across the San Fernando Valley often involve compact lots, older garages, mature landscaping, hillside conditions, long utility runs, and different city review paths. BBC ADU plans around those realities instead of treating every property like the same blank lot.

Start with the address

Send the address and what you are trying to build.

Share the property address or neighborhood, the ADU type you are considering, and any photos or plans you already have. BBC ADU will start with the site questions that matter most and help you understand the next step.

BBC ADU - General builder license number #720343 - Established March 1996 - 30 years licensed as a contractor