Permit-Ready ADU Plans for Massachusetts Homeowners
For Massachusetts homeowners looking to add an accessory dwelling unit, the traditional route of hiring a local architect can cost upwards of $15,000 and take months before a single permit is submitted. This company offers a streamlined alternative: pre-designed, Massachusetts code-compliant ADU plans available at a fraction of the cost, delivered in days rather than months.
Their team brings together backgrounds in construction, design, and engineering to provide permit-ready ADU plans that save homeowners both time and money — without sacrificing quality or code compliance. Plans are designed to meet Massachusetts state law, though some local adjustments may be needed depending on the municipality.
Three Service Tiers to Fit Every Project
They offer three distinct pricing tiers to accommodate different needs and budgets:
- Tier 1 – Plans Only ($800): Instant downloadable ADU plans with up to three minor changes (such as window placement, door swing, or small layout tweaks). A Permit-Ready Set Upgrade is available for an additional $500, which includes a title block with the buyer's information, prepared for building permit submission and delivered within 24 hours. Foundation options include crawl space (included), full basement (+$250), or slab floor (+$250). A 20-minute Q&A call or email support is also available with this tier.
- Tier 2 – Plans + Cost Estimate ($1,400): Everything in Tier 1, plus a full cost analysis covering materials and estimated subcontractor labor based on the buyer's zip code. All costs and estimates are sourced from local subcontractors and vendors in the specific area. A free 20–30 minute budget feasibility call is included after purchase.
- Tier 3 – Full Custom Design ($3,100): A completely custom set of drawings tailored to the specific lot and zoning restrictions. This includes a site-fit analysis, zoning review, one round of revisions, foundation plan, roof plan, MEP rough layouts, and 3D renderings. The average turnaround for a full custom design is approximately two weeks, though timelines are determined on a client-by-client basis.
Featured pre-designed plans include options such as an 864 sq ft, 1 bed / 1.5 bath layout, with prices ranging from $800 to $3,400 depending on the selected tier and add-ons.
How the Process Works
The process is designed to be straightforward for homeowners at any stage of their ADU project:
- Choose a Plan: Select from pre-designed, code-compliant ADU plans suited to Massachusetts requirements.
- Site Placement: A licensed surveyor places the plan on the specific property site to ensure proper fit and compliance.
- Submit for Permitting: With a permit-ready plan in hand, homeowners can move directly into the permitting process.
Regarding common questions: in most Massachusetts towns, ADUs can be up to 900 square feet or 50% of the size of the main home, whichever is smaller. Statewide, ADUs are permitted by-right, though some towns may require site plan review. Tier 1 plans are available as an instant download. Their plans include Title 5 notes, though Board of Health review is still required for septic-related matters.
For those just beginning their research, they also offer a free Massachusetts ADU Starter Guide to help homeowners understand the process before committing to a plan or package.
