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ADU Contractors near Somerville, MA

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What you need to know

ADU Contractors in Somerville, MA: Building in One of the Most Densely Populated Cities in the US

Somerville, Massachusetts is one of the most densely populated cities in the entire United States, making Accessory Dwelling Units (ADUs) an increasingly important housing solution for homeowners looking to maximize their property's potential. With its vibrant neighborhoods like Davis Square, Union Square, and Inman Square, Somerville presents unique opportunities and challenges for ADU contractors. Whether you're looking to add a basement apartment, a garage conversion, or a detached backyard cottage, working with experienced ADU contractors in Somerville, MA is essential to navigating the city's specific zoning and building requirements.

Somerville Zoning and ADU Regulations

Somerville operates under its SomerVision 2040 comprehensive plan, which actively encourages increased housing density. Massachusetts state law, particularly Chapter 40A, was amended to require municipalities to allow ADUs by right in single-family zoning districts. Somerville has aligned its local ordinances accordingly, but there are still important local rules that ADU contractors must follow:

  • Owner-occupancy requirements may apply depending on the type of ADU being constructed.
  • ADUs are generally limited in size, often capped at 900 square feet or a percentage of the primary dwelling's square footage.
  • Setback requirements and lot coverage rules must be carefully reviewed, especially given Somerville's small lot sizes.
  • Parking requirements may be waived for ADUs located near public transit, which is common in Somerville given its proximity to the MBTA Green and Red Lines.
  • All ADU projects must comply with the Massachusetts State Building Code (780 CMR) and require proper permitting through the Somerville Inspectional Services Department.

Types of ADUs Commonly Built in Somerville

Given the city's urban character and older housing stock, ADU contractors in Somerville most frequently work on the following project types:

  1. Basement ADUs: Converting existing basement space into a legal dwelling unit is popular in Somerville's older triple-decker and Victorian-era homes.
  2. Attached ADUs: Adding a new living space attached to the existing home, often through a rear addition.
  3. Detached ADUs: Building a separate structure in the backyard, though lot size constraints can make this challenging in Somerville.
  4. Internal ADUs: Converting an existing room or floor within the home into a self-contained unit.

Why Hire a Local ADU Contractor in Somerville?

Hiring a local ADU contractor familiar with Somerville's building department and zoning board can save you significant time and money. Local contractors understand the nuances of working with the city's older infrastructure, including aging electrical systems, limited lot access, and historic preservation considerations in certain neighborhoods. They also have established relationships with local inspectors and are up to date on the latest changes to Somerville's ADU ordinances.

Investing in an ADU in Somerville can provide rental income, multigenerational living options, or increased property value in one of Greater Boston's most sought-after communities. Contact a qualified Somerville ADU contractor today to explore your options.

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