Urbatect Development, LLC – ADU Contractor and Custom Home Builder in California
Urbatect Development, LLC is a full-service design, permitting, and construction firm serving homeowners and industry professionals across California and Washington. With over 15 years of experience and more than 3,500 completed projects, they offer an integrated approach that covers every phase of a build — from initial feasibility through final inspection — under one roof.
Their services span custom homes, additions, and accessory dwelling units (ADUs). As an established ADU contractor and ADU builder, Urbatect manages the entire process, including design, permit acquisition, and construction. They report permit timelines that run up to 30% faster than industry averages, with fixed pricing and no hidden fees. Projects are supported by 3D visualizations to help clients understand what they are getting before construction begins.
Types of ADUs Urbatect Builds
Urbatect works across the full range of accessory dwelling unit types. Whether a homeowner is looking for a detached ADU builder, a garage conversion contractor, or an in-law suite builder, the company has experience delivering each of these unit types in compliance with California and Washington regulations.
Attached ADUs are connected to the primary residence, typically as a side or rear addition. This category also includes Junior ADUs (JADUs) — units up to 500 square feet built within the existing structure of the home. JADUs may share certain facilities with the main home and are generally a more affordable entry point into ADU construction.
Detached ADUs are standalone structures on the same lot as the primary home. These fully independent units offer complete privacy and are well suited for rental income or housing family members. Examples include backyard cottages, studio units, casitas, and converted outbuildings. As a granny flat builder and backyard cottage builder, Urbatect designs these units to integrate naturally with the existing property.
Interior ADUs involve converting underused space within the existing home — such as a basement, attic, or floor — into a separate living unit. This approach maintains the property's original footprint while adding usable living space.
Garage conversions are another option Urbatect handles. Under California law, homeowners can in most cases convert an attached or detached garage into a livable ADU without being required to replace the lost parking. Urbatect also works on second-story additions above garages and combined parking-and-living structures.
An accessory dwelling unit — also referred to as a granny flat, in-law suite, or backyard cottage — is a self-contained living space on the same lot as a primary residence. It includes its own kitchen, bathroom, and entrance. California and Washington laws have made it more straightforward to build these units in recent years, and they can serve a range of purposes: housing family members, accommodating guests, or generating rental income.
Custom ADU Design and the Build-Ready Process
Urbatect offers both fully custom ADU design and a library of build-ready ADU floor plans. For homeowners who want a tailored solution, their in-house design team works directly with clients to develop plans that reflect the specific site conditions, local zoning requirements, and the homeowner's budget and lifestyle. The process moves from initial concept through permit-ready drawings and into construction without the need to coordinate multiple separate contractors or consultants.
For those looking to move faster, Urbatect's build-ready plans provide a starting point that can be selected as-is or adjusted to better fit the property. Either path — custom or build-ready — is managed by the same team through design, permitting, and construction.
On the financial side, Urbatect connects clients with vetted, ADU-experienced lending partners to help navigate financing options. They are not a lender or financial advisor, but they assist homeowners in understanding project costs and getting connected with appropriate resources. This includes a free ADU cost calculator for California homeowners and access to pre-qualification support through their lending partners.
Urbatect Development, LLC operates as a licensed California design-build firm. Their work as an accessory dwelling unit builder and JADU contractor covers projects across cities and counties throughout California and Washington, with a process designed to reduce complexity for the homeowner from start to finish.
