Last updated: September 24, 2026
What affects the price
Building an ADU is a custom project, so costs vary based on your specific choices. Site conditions are the biggest factor; if your land requires significant grading, utility extensions, or foundation work, those expenses add up quickly. Choosing high-end finishes, custom cabinetry, or complex roof lines will also push the budget higher compared to a standard design. Prefabricated units often offer predictable costs, while custom site-built structures allow for more flexibility but can be harder to estimate upfront. Exact pricing confirmed free on the call.
About this service
An ADU company manages the transition from your initial concept to a finished, livable space. This involves design, permitting, and the actual construction work needed to get your project across the finish line. Choosing the right partner means finding a team that handles the technical complexities of zoning and utility infrastructure so you don't have to navigate those hurdles alone. Exact pricing confirmed free on the call.
Frequently asked in Cambridge
What is a detached accessory dwelling unit in Cambridge?
What are the requirements for ADU housing in Cambridge?
What makes an affordable accessory dwelling unit in Cambridge?
An affordable accessory dwelling unit in Cambridge, Massachusetts, is one built using cost-effective materials and efficient construction techniques while strictly adhering to all Massachusetts building codes and Cambridge's zoning regulations. Affordability can also relate to rental rates. Our focus is on delivering technically sound, durable construction that provides excellent long-term value within your budget, ensuring full compliance.
What is involved in ADU construction in Cambridge?
How do I get an ADU quote in Cambridge?
To obtain an ADU quote in Cambridge, Massachusetts, contact our office to schedule a comprehensive consultation. We will assess your property, discuss your project requirements, and provide a detailed estimate based on the scope of work, materials, and complexity. Our quotes are transparent, covering all aspects of design, permitting, and construction in compliance with Massachusetts state and Cambridge local regulations.
What are some accessory dwelling unit companies in Cambridge?
Reputable accessory dwelling unit companies in Cambridge, Massachusetts, possess extensive knowledge of state ADU laws and Cambridge's specific zoning ordinances, coupled with a strong portfolio of completed projects. They prioritize clear communication, detailed planning, and adherence to safety standards. We are one such company, dedicated to providing technical expertise and high-quality ADU construction services.
What does 'accessory dwelling unit' mean in Cambridge?
In Cambridge, Massachusetts, an 'accessory dwelling unit' (ADU) refers to a secondary, independent living unit on a single-family residential lot. This can be attached to or detached from the primary home. ADUs must comply with Massachusetts state regulations and Cambridge's local zoning laws regarding size, occupancy, and construction. Our services ensure your ADU meets all these requirements.
Also serving nearby: Newton · Boston · Quincy · Lynn · Brockton
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Cambridge — population 118,214; about 18,479 residents per square mile across 6.4 sq mi. ZIP codes covered include 02138, 02139, 02140, 02141, 02142, 02238.
Neighborhoods served in Cambridge: Central Square, Inman Square, Porter Square, Harvard Square, Kendall Square — and every surrounding area.
Areas we serve
Browse by state, then city.
California (4)
All of California · Fairfield · Murrieta · Richmond · Vallejo
