Turnkey ADUs is a Leominster, MA ADU contractor offering modular, prefabricated accessory dwelling units across New England. Models range from $119K–$249,900. Massachusetts' 2024 Affordable Homes Act now allows ADUs up to 900 sq. ft. by right.

About Turnkey ADUs

What Is an ADU and What Does Turnkey ADUs Offer?

An accessory dwelling unit (ADU) is a secondary living space installed on the same lot as a primary home. ADUs can serve a range of purposes — generating rental income, housing family members, or increasing overall property value. Turnkey ADUs is an ADU contractor based in Leominster, MA, serving residents across New England with modular, prefabricated ADU construction.

The company operates a sales office at 435 Lancaster St, Leominster, MA 01453, and manufactures its units at a facility in New Hampshire. Their approach combines off-site construction with parallel on-site preparation, which they say can reduce project timelines by up to 50% compared to traditional building methods.

Turnkey ADUs works with two primary ADU types:

  1. Addition ADU: An extension of the main house, typically with a separate entrance.
  2. Detached ADU: A stand-alone backyard cottage or granny flat, suitable for use as a rental unit, Airbnb, or in-law suite.

ADU Models and Pricing

Turnkey ADUs offers several pre-designed models at varying sizes and price points. These include:

  1. The Liberty — 900 sq. ft., 2 bed / 2 bath, starting at $249,900
  2. The Brookline — 795 sq. ft., 2 bed / 1 bath, starting at $199,000
  3. The Newbury — 896 sq. ft., 2 bed / 2 bath, starting at $230,000
  4. The Quincy — 899 sq. ft., 2 bed / 1 bath, starting at $234,900
  5. The Sterling — 610 sq. ft., 1 bed / 1 bath, starting at $169,900
  6. Studio model — 480 sq. ft., 1 bed / 1 bath, starting at $119,000

A new ADU model is also in development for the Leominster, MA area. Units are built off-site and installed on either an existing or new foundation, with the goal of getting homeowners into their new space as quickly as possible.

Common reasons homeowners pursue an ADU include:

  1. Generating rental income from a detached ADU builder-constructed unit
  2. Housing elderly parents or adult children in a dedicated in-law suite
  3. Increasing resale value of the property
  4. Creating flexible-use space such as a home office, guest house, or studio

Massachusetts ADU Law and What It Means for Homeowners

Under Governor Healey's Affordable Homes Act (Section 8 of Chapter 150, signed August 6, 2024), Massachusetts zoning laws were amended to allow ADUs up to 900 sq. ft. by right in single-family zones, provided local regulations are met. All towns and cities in Massachusetts are required to allow ADUs of all types, with municipalities given 180 days to update their local rules.

Key points from the new law include:

  1. ADUs cannot exceed the smaller of 900 sq. ft. or half the gross floor area of the primary dwelling.
  2. Municipalities cannot require owner occupancy under the new law.
  3. No additional parking is required if the ADU is located within 0.5 miles of a transit station.
  4. Towns may restrict short-term rentals but cannot restrict general rental use.
  5. ADUs meeting state requirements must be permitted by right — no public hearings required.
  6. Special permits may still be required for larger ADUs or for building more than one ADU on a single-family lot.

Turnkey ADUs offers a free ADU property evaluation and estimate for homeowners interested in exploring their options under the new law.

For financing, homeowners may consider options such as a Home Equity Line of Credit (HELOC) or a cash-out refinance. Turnkey ADUs states they can help guide clients through available financing options in partnership with trusted lenders.

Their sales office is open Monday through Friday, 8:00 am – 4:00 pm, and is located at 435 Lancaster St, Leominster, MA 01453.

Services

Turnkey ADUs performs the following services

  • Architecture & Design
  • Construction
  • Financing & Loans
  • Feasibility & Site Assessment

Specifics

Prefab Specialist Eco-Friendly Luxury Builds

Location

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