Plan Your ADU Project
With Confidence
Free calculators and guides from Massachusetts' premier ADU builder. Know your ROI before you commit.
Free Planning Tools
Everything you need to evaluate, plan, and execute your ADU project.
ADU ROI Calculator
Instantly calculate your potential return on investment, monthly cash flow, and payback period.
- ✓Cash-on-cash return analysis
- ✓Compare financing options
- ✓5-year ROI projection
ADU Project Checklist
Complete 7-phase guide from initial planning through renting — 50+ action items included.
- ✓Pre-planning through completion
- ✓MA-specific requirements
- ✓Downloadable PDF version
Check Your Town's ADU Rules
Not sure what's allowed on your property? Our Permit Navigator covers all 351 Massachusetts towns with setbacks, fees, and timelines.
Why Homeowners Choose MassDwell
Factory-built quality. Local expertise. Turnkey delivery.
50% Faster
Factory construction means 8-12 weeks vs. 6-12 months for traditional builds.
Fixed Pricing
Know your total cost upfront. No surprises, no change orders, no overruns.
Turnkey Delivery
We handle everything: permits, design, site work, and installation.
Ready to Build Your ADU?
Get a free consultation with our team. We'll assess your property, discuss your goals, and provide a detailed quote.