From
"Can I even build one?"
to
"Keys in hand."
Follow the same path professional builders use — no guesswork, just results.
Each phase has dedicated tools. Complete them in order to avoid costly mistakes and wasted time.
Each phase has specific goals and tools. Don't skip ahead — the order matters.
Each tool is designed for its phase. Buy individually or get the full BYOT bundle.
Keys in hand. An ADU that's permitted, built, and ready — without the chaos.
Before spending a dime, answer the most critical question.
Determine if your property CAN legally have an ADU, understand the regulations, and map out your entire project before committing any money.
Hiring an architect or contractor before knowing if your property is even eligible. This wastes $5,000-$15,000 .
Get real about budget, financing, and whether the math actually works.
Know your realistic budget, understand ALL financing options, project your rental income, and confirm the ROI makes sense for your goals.
Starting construction with a "rough budget" then running out of money halfway through. Average cost overrun: $47,000 .
Create your plans, navigate permits, and prepare your site for construction.
Get your permit application package ready, understand your site requirements, and select the features and accessories for your ADU.
Submitting incomplete permit applications that get rejected, costing months of delays. Or missing site constraints that blow up your budget.
Complete permit application generator. Checklists, required documents, and submission guides for your town.
Visualize your ADU placement. Setbacks, easements, utilities, and optimal positioning for your lot.
Solar, smart home, ADA features, and premium finishes. Plan your upgrades and get accurate pricing.
Professional ADU floor plans and architectural resources. Pre-designed layouts optimized for MA/RI regulations.
Find, vet, and manage your ADU professionals — without getting burned.
Assemble your ADU dream team: general contractor, specialty trades, and any consultants. Manage them professionally from day one.
Hiring the first contractor you find, or choosing based on price alone. Bad contractors cost 3x more in the long run through delays, change orders, and poor work.
Navigate construction, pass inspections, and get those keys.
Manage construction, stay on schedule, pass all inspections, and receive your certificate of occupancy.
Every tool from Phases 1-4 stays active through construction. Use your DIY Planner for milestone tracking, Trade Command Center for contractor management, and Financial Command for payment scheduling.
Need additional trades mid-project? Access our vetted network anytime for specialty contractors.
Congratulations! Your ADU journey is complete. Time to rent it out, move family in, or enjoy your new space.
Build Your Own Toolkit
Every tool. Every phase. One investment. Get everything you need to go from "Can I?" to "Keys in hand" — and save thousands on costly mistakes.
BYOTool members get first access to vetted professionals and priority support throughout your project
All 9 tools, all 5 phases, lifetime access
Less than 1% of your total ADU cost
Prevents $50K+ in costly mistakes
Buy only what you need, when you need it
Don't overthink it. Start with the Feasibility Tool — know in 5 minutes if your property can have an ADU.