ADU(AccessoryDwellingUnit)
Expand your property value with a fully permitted ADU — perfect for rental income, in-law suites, or a private home office.
OVERVIEW
Why Choose Hollett & Son for ADU (Accessory Dwelling Unit)?
An Accessory Dwelling Unit (ADU) is one of the smartest investments a Massachusetts homeowner can make. Whether you are looking to generate rental income, house family members, or add significant resale value to your property, Hollett & Son handles the full ADU build from permits and design to construction and final inspection. We build detached ADUs, garage conversions, and basement ADUs — all fully permitted and code-compliant.
HOW IT WORKS
Your ADU (Accessory Dwelling Unit) Project, Step by Step
From the first phone call to the final walkthrough — here's exactly what working with us looks like.
Step 1
Site assessment & zoning review
Step 2
Architectural design & permit filing
Step 3
Foundation & structural work
Step 4
Framing, insulation & MEP rough-in
Step 5
Finishing, inspection & certificate of occupancy
Step 1
Site assessment & zoning review
Step 2
Architectural design & permit filing
Step 3
Foundation & structural work
Step 4
Framing, insulation & MEP rough-in
Step 5
Finishing, inspection & certificate of occupancy
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More Services from Hollett & Son
Pairing well with ADU (Accessory Dwelling Unit) — explore other ways we can transform your home.
FINANCING AVAILABLE
Affordable Monthly Payments
Don't let budget hold you back from the home you want. We've partnered with Hearth to offer flexible financing — get the project you need today and pay over time with low monthly payments.
HOW IT WORKS
Get financing in 4 simple steps
Apply in Minutes
Click below and fill out a quick online application. No paperwork, no lengthy forms.
Get Pre-Qualified
See personalized loan options in seconds. Checking your rate will not affect your credit score.
Choose Your Plan
Pick the monthly payment that fits your budget. Multiple terms and rates to choose from.
Start Your Project
Once approved, we begin work right away. You make affordable monthly payments instead of a big upfront cost.
See what you qualify for in 60 seconds
- Pre-qualify without affecting credit
- Loan amounts up to $250,000
- Terms from 3 to 12 years
- No prepayment penalties
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READY TO START?
Ready to start your ADU (Accessory Dwelling Unit) project?
Free in-home consultation. Detailed estimate within 48 hours. No obligation, no pressure — just honest answers from a contractor you can trust.