ADU – Feasibility Study

What is an ADU – Feasibility Study?

An ADU – Feasibility Study is intended to support a property owner’s early decision-making about building an ADU. The study includes:

  • Information about your property’s unique conditions and constraints
  • Local zoning and permitting considerations
  • Utility needs (water, sewer, and energy)
  • Preliminary design considerations
  • High-level cost and budget estimates

Receiving an ADU – Feasibility Study does not obligate a property owner to build an ADU, nor does it obligate a property owner to use the chosen Provider for any additional services (read more…) .

How much does a Feasibility Study Cost?

  • Just $ 300, for a qualifying homeowner participating in the ADU Incentive Program.

Here’s the cost breakdown:

Onsite AssessmentFeasibility StudyMHP SubsidyOut-of-Pocket Cost
$ 150$ 650$( 500)$ 300

Normally, a detailed Feasibility Study would cost $ 800 but the Massachusetts Housing Partnership (MHP) is subsidizing one study $( 500) per property to incentivize ADU construction (read more…).

How to Get a Feasibility Study?

An ADUFeasibility Study begins with a phone call or a site visit. A qualified professional will answer your questions about ADUs and assess your property, recording necessary information to create a detailed report:

  • ADU type, expected usage and estimated square footage
  • Zoning district
  • Site work complexity and site preparation needs: Evaluate lot size, topography, existing structures, and environmental considerations
  • Site access complexity: Identify access points for construction and any clearing or grading requirements
  • Electrical Service: Current and proposed (OH or UG; common or separate)
  • Current electrical service amperage
  • Hookup between ADU and Primary Dwelling
  • Will this be an all-electric ADU?
  • Wastewater Service: Current and proposed (sewer or septic; common or separate)
  • Water Service: Current and proposed (public or private; common or separate)
  • Environmental considerations
  • Any other local requirements (i.e. historic district, fire and emergency access, impact fees, etc.)

A property can only receive a one subsidy. Please let your assessor know if you have contacted another Feasibility Study Provider.


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If you’ve got more question, and want us to contact you, then just [click on] the purple ADU – Contact Me Form button above and we’ll reach out.