Type Five is a Berkeley, CA-based ADU builder offering custom backyard cottages, granny flats & in-law suites. They combine modular design, transparent pricing & streamlined construction for stress-free, high-quality detached ADUs built to last.

Type Five, Berkeley, CA

About Type Five

Type Five: A New Kind of ADU Builder

Type Five is a housing company based in Berkeley, California, that designs and builds exceptional homes. As an accessory dwelling unit builder, they bring together architects, engineers, and builders under one roof to deliver a seamless, stress-free experience from start to finish. Their innovative approach combines modular design with advanced construction methods, reshaping the way homeowners think about expanding their living space.

At the core of Type Five's offering is a proprietary modular design system — a Lego-like framework that empowers homeowners to customize the size, shape, and layout of their new home. Whether you're looking for a backyard cottage, a granny flat, an in-law suite, or a fully detached ADU, Type Five has the tools and expertise to bring your vision to life.

Custom ADUs Designed Around Your Needs

Type Five's design system is built for flexibility. As a full-service ADU contractor, they offer a wide range of customization options to suit your space, lifestyle, and budget:

  1. Adjustable footprints — dimensions that flex to fit your backyard and landscaping
  2. Configurable interiors and openings — layouts, windows, and doors modified to your exact needs
  3. Vertical scalability — options ranging from different roof profiles to multi-story builds

Their design philosophy prioritizes form, function, quality, longevity, and adaptability. Every detail is considered, from customizable modular kitchens to built-in features that maximize the utility of smaller spaces. As a detached ADU builder, Type Five ensures that each home feels thoughtfully crafted and purpose-built.

The exterior options are equally impressive, with carefully curated finishes that make luxury accessible. Standard features included in every Type Five home include:

  1. Induction cooktop and concealed hood
  2. Anti-microbial solid surface kitchen countertops
  3. Full-layover European kitchen cabinets with soft-close hardware
  4. Integrated dimmable recessed lighting
  5. Seamless waterproof bathroom floors
  6. Engineered hardwood floors
  7. Solid wood interior pocket doors
  8. Electric mini-split heating and cooling system
  9. High-efficiency heat pump water heater

A Streamlined Process with Transparent Pricing

What sets Type Five apart as an ADU builder is their commitment to simplicity and transparency. Their standardized design and build process cuts the typical move-in time by a third or more, meaning homeowners can get into their new space faster without sacrificing quality.

From day one, Type Five provides guaranteed, up-front pricing for the entire project — no guesswork, no runaway budgets, and no stress. Their full-service approach combines modular innovation with the expertise of their in-house team, creating a clear and worry-free path from initial consultation through to construction completion.

Type Five uses efficient wood frame construction methods and materials, following a legacy of American craftsmanship. Their goal is to build hundred-year homes — worthy investments that deliver both form and function that stand the test of time.

Licensed under CSLB #B-1086540, Type Five is dedicated to making thoughtfully designed, built-to-last, and accessible housing available to more communities across California and beyond.

Services

Type Five performs the following services

  • Architecture & Design
  • Construction
  • Finishing & Fit-out
  • HVAC installation

Type Five Reviews

Wesley Schrock

2025-12-13
"Type Five built us an L-shaped ADU. It's beautiful. Entire team was great to work with. Efficient design process, excellent communication and transparency, no surprises. We put our trust in them and they delivered. Highly recommend."

Achintya Madduri

2025-09-12
"We wanted to build an ADU as both a home office and a guest space. Our backyard had the room, but because we live in the hills, a prefab drop-in wasnt an option. At the same time, we were concerned about the timelines and costs of a fully custom build. Type Five turned out to be the perfect balance. From start to finish, they were incredibly easy to work with. Their menu-style design options and streamlined design-to-construction process gave us a lot more certainty around cost and timelines, which was a huge relief. The design phase in particular was very convenient, and we also appreciated their bundled contract approach that made all costs clear and transparent. Type Five also navigated the tricky local permitting process on our behalf, which saved us a lot of stress. Were thrilled with how our ADU turned out and couldnt be happier with the experience. Aleksis and the entire Type 5 crew were fantasticwe cant recommend them highly enough."

K Rathbun

2025-08-01
"We wanted to build an ADU so that we would have a place for friends and family to stay when they visited. Type Five offered the sweet spot between a prefabricated and totally custom built ADU. We liked that they handled everything about the building process from permitting to all the final inspections. They limited the choices for interior and exterior finishes which made decisions so much easier. We were really glad we didn't have to spend months on all those details. If we wanted something a little more custom, like our in our kitchen, they were more than accommodating. The finished ADU more that meets our expectations!"

Jeroen Dewulf

2025-07-30
"We recently built an ADU in our garden with Type Five and are very satisfied with it. Working with Type Five was a positive experience and we can highly recommend the company. They are fast, clean, reliable and make sure that everyting they promise is taken care of. Five stars for Type Five!"

Jamie Revelle

2025-03-31
"We had a great experience with Type Five, and the ADU they built for us in our backyard is perfect. Tobin and Aleksis were communicative and flexible, and handled all of the details from beginning to end. We were able to personalize and make choices on many of the finishes flooring, siding, roof style, cabinets, appliances, etc. without the amount of decision-making being overwhelming. The end result is a beautiful backyard home that complements our primary residence. Highly recommend!"

Specifics

Licensed Prefab Specialist Luxury Builds

Opening hours

Monday 9:00AM - 5:00PM
Tuesday 9:00AM - 5:00PM
Wednesday 9:00AM - 5:00PM
Thursday 9:00AM - 5:00PM
Friday 9:00AM - 5:00PM
Saturday -
Sunday -

Location

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