BuildLabs: ADU Design and Construction Services
BuildLabs is a design-build company specializing in the construction of Accessory Dwelling Units (ADUs) and tiny homes. Operating across all 50 states, they offer a full-service approach that covers everything from initial planning and permitting through to final construction and inspection.
An Accessory Dwelling Unit (ADU) is a secondary, self-contained living space located on the same lot as a primary residence. This can take the form of a detached unit, an attached unit, or a conversion of existing space such as a garage or basement. ADUs serve a variety of purposes, including generating rental income, providing intergenerational housing, accommodating employees, or simply adding flexible living space to a property.
BuildLabs works with clients looking to build a range of ADU types, from detached ADUs and backyard cottages to casitas and small independent structures. Each project is approached with attention to detail, using sustainable materials, luxury fixtures and finishes, customized flooring, and highly efficient insulation.
A Distinctive Construction Methodology
What sets BuildLabs apart from conventional modular builders is their on-site, off-site construction methodology. A significant portion of materials and foundational elements are manufactured at a precision facility in Germany before being assembled on location. This approach is intended to ensure a high degree of accuracy and quality control throughout the build process.
BuildLabs offers both pre-approved ADU plans and fully custom designs. Clients can choose from a selection of existing models or work directly with the design team to create something tailored to their specific needs and property. From skinny homes to casita plans, each design is built with intentionality — balancing aesthetics, functionality, and performance.
Their work has received recognition in the industry, including a 2023 Builder Online award for best Accessory Building / Outdoor Spaces, awarded for an East Hampton pool cabana project completed in collaboration with Up Studio. The 145-square-foot structure features a bathroom, storage, an outdoor bar, and lounge areas, and was noted for its innovative construction techniques and sustainable build approach.
The BuildLabs Process
BuildLabs guides clients through four defined phases of ADU construction, with a general timeline of approximately 16 weeks from start to finish:
- Planning + Design — Feasibility study and permitting. Approximately 2 weeks.
- Site Preparation + Foundation — Ground preparation and foundation work. Approximately 2 weeks.
- Construction + Build-Out — Framing, MEP installation, and interior finishes. Approximately 10 weeks.
- Final Touches + Inspection — Ensuring the unit meets local codes and is ready for use. Approximately 2 weeks.
Each client is assigned a project manager who helps navigate permitting requirements and local zoning regulations. BuildLabs handles the legal and administrative aspects of the project, which can vary significantly depending on the municipality. For example, in East Hampton, a detached affordable accessory apartment must be between 300 and 600 square feet, while an attached unit can be up to 50% of the gross floor area of the primary dwelling, not exceeding 1,200 square feet.
The cost of building an ADU with BuildLabs depends on factors such as size, design complexity, materials, and site conditions. They provide a comprehensive estimate based on individual project requirements and aim to maintain transparent pricing throughout the process.
For those considering adding an ADU to their property — whether as a granny flat, in-law suite, backyard cottage, or income-generating rental unit — BuildLabs offers an end-to-end service that manages design, permitting, and construction under one roof.