Los Angeles ADU Construction

ADU Construction Built for Extra Income or Extra Family Space

From detached backyard units to attached and junior ADUs, we design and build accessory dwelling units that meet California code and add real, usable space to your property.

Build Equity & Flexibility

A Second Unit That Pays for Itself

An accessory dwelling unit is one of the most effective ways to add value, rental income, or space for extended family to a Los Angeles property. But ADUs come with their own set of zoning rules, utility requirements, and permitting steps — which is why having an experienced contractor matters from day one.

Prowork Contractors manages the entire ADU process: site evaluation, design, permitting, and construction, so your finished unit is fully code-compliant and built to the same standard as the rest of your home.

What We Build

Types of ADUs

Every lot is different — here are the ADU types we build most often for Los Angeles homeowners.

Detached ADU

A separate backyard residence offering maximum privacy and flexibility for family, guests, or rental income.

Attached ADU

A private living unit connected to the main house, with its own entrance, kitchen, bathroom, and living space.

Garage Conversion ADU

Transform an existing attached or detached garage into a comfortable, code-compliant living space.

Junior ADU (JADU)

A compact residence created within an existing home, typically featuring an efficient kitchen and shared or private bathroom.

Already have a garage you’d like to put to work? Converting an existing garage is often a more direct route to an ADU because the structure is already in place. Learn more on our Garage Conversion page, or read our step-by-step guide to converting a garage into an ADU in Los Angeles.

Why Prowork

ADUs Built Right, Permitted Right

Code-Compliant by Design

Every ADU is designed to meet current California and Los Angeles ADU regulations.

Licensed & Insured

Full compliance with Los Angeles building codes on every project.

Permit Handling Included

We manage plans, permits, and inspections from start to finish.

How It Works

Our Simple ADU Process

The same proven process behind every Prowork project, tailored to ADU construction.

01

Consultation

We discuss your space needs, design preferences, and budget.

02

Planning & Design

Permit-ready plans and a structural strategy that fits your home.

03

Construction

Skilled contractors build using quality materials and proven techniques.

04

Final Inspection

A thorough walkthrough to confirm everything meets our standards.

Recent Work

ADU Project Gallery

A look at recent ADU and construction projects completed across Los Angeles. Click any photo to view it larger.

ADU Construction Across the San Fernando Valley

Every lot is different, and the Valley’s range of lot sizes and terrain means the right ADU isn’t one-size-fits-all. We evaluate your property first — setbacks, utilities, access, and slope — then design an ADU that fits the lot and the way you plan to use it.

Encino

Many Encino properties have the space for a detached ADU with its own entrance and outdoor area, while others are better suited to a garage conversion. We’ll walk through both options for your specific lot.

Tarzana

From compact lots to larger parcels, Tarzana homeowners use ADUs for family, rental income, and flexible space. See our ground-up ADU in Tarzana.

Sherman Oaks

Properties in the Sherman Oaks hills can involve added grading and review requirements. We identify those early so there are no surprises in design or permitting.

Van Nuys

Van Nuys offers plenty of lots well suited to detached ADUs. See our custom ADU in Van Nuys.

Planning an ADU in the Valley? Request a free consultation.

What Our Clients Say

Questions

Frequently Asked Questions

How much does an ADU cost to build in Los Angeles?

Cost depends on the ADU type — detached, attached, or a conversion — and its size and finishes. We provide a detailed estimate during your free consultation.

Do I need permits to build an ADU?

Yes, ADUs require city permits and must meet California ADU regulations. We handle the entire permitting process as part of our planning services.

How long does it take to build an ADU?

Most ADU projects take a few months from permitting through completion, depending on type and size. We provide a timeline estimate during your consultation.

Can I rent out my ADU?

In most cases, yes. ADUs are commonly used as rental units, and we can help design your unit with rental use in mind.

What's the difference between an ADU and a JADU?

A JADU is built within your home’s existing footprint and shares some infrastructure with the main house, while a standard ADU is a fully independent unit, attached or detached.

Ready to Expand Your Home?

Get in touch today for a free consultation. Call (310) 800-5715 or fill out the form to start your room addition with Prowork Contractors.