One accountable construction lead
Your Master GC becomes the central construction conversation instead of forcing you to coordinate every trade and project question independently.
Homeowners · Master GC Program
Your ADU shouldn't start with a random contractor.
Start with an ecosystem.
Your Master GC is the ADU-focused general contractor selected for your territory. But the real advantage is what stands behind them: design, financing, permitting, specialty trades, municipal resources, real estate guidance, education and homeowner tools working together around the project.
Reviewed before positioned
Licensing, insurance, ADU experience, references and homeowner practices.
One point of coordination
A builder who can help connect the moving pieces instead of leaving you to assemble them alone.
Ecosystem-backed
Financing, legal, design, trades, education and local resources are already connected.
Territory focused
One Master GC position per territory across all six New England states.
Why it matters
A better builder relationship starts with a better system around the builder.
ADUs touch zoning, utilities, design, engineering, financing, permitting, construction, insurance, title questions, specialized trades and sometimes real estate strategy. A strong general contractor matters, but an ADU project gets easier when the contractor is not operating in a vacuum.
ADU-first sequencing
Feasibility, scope, design, permits, utilities and construction happen in an order. The program is built around that sequence.
Local territory awareness
Town lines matter. Septic, sewer, review boards, permit workflows and local building practices vary across New England.
Financing already has a front door
The Bank Vault gives the project a place to explore construction, equity and state-specific financing pathways when budget questions appear.
Permitting and legal questions have a home
The Courthouse helps homeowners navigate rules, permits, contracts, title and insurance questions instead of guessing.
You stay informed
The University, municipality resources and homeowner tools let you understand the process instead of surrendering the entire project to jargon.
The real advantage
One Master GC.
An entire ADU ecosystem behind the project.
Your Master GC does not have to be the architect, lender, attorney, solar installer, REALTOR® or municipal expert. They need to know when the project needs those people and where to connect the next question.
Designs & BlueprintsPlans, design resources and blueprint marketplace.
Trades & ServicesADU-proficient specialty professionals.
Bank VaultFinancing pathways and lender resources.
The CourthousePermitting, legal, contracts and insurance resources.
Municipality ResourcesLocal ADU rules, forms and department information.
Real EstateProperty analysis and ADU-aware real estate professionals.
Accessories & Aging in PlaceSolar, smart home, accessibility and move-in solutions.
The UniversityPlain-English education throughout the journey.
The ADU Exchange connects independent professionals and resources. Homeowners remain free to choose their own contractor and providers, and project agreements are made directly with the professionals they hire.
Find your territory
Type your town. Meet the Master GC selected for your territory.
The live map stays exactly where it belongs: at the center of the homeowner experience. Search your town, tap a territory, or use your location.
40Territories
1,603Cities & towns
6States
Covers all six New England states. Or .
Your territoryMaster GC selectedSelection in progress
One Master GC position per territory
Pick a town or tap the map.
You’ll see the territory, towns it covers, common ADU types and the Master GC selected for that region.
Not sure your property qualifies? Run a free feasibility check →
Are you a builder? Master GC Program →
What happens next
From first question to finished ADU, the pieces stay connected.
A Master GC relationship should make the journey easier to understand. It does not eliminate your choices. It gives the project a central construction lead while the rest of the ecosystem stays available when needed.
1
Check the property
Start with feasibility: zoning, utilities, lot conditions, septic or sewer and local requirements.
2
Define the project
Detached, attached, conversion or addition. Align goals, scope, approximate budget and timing.
3
Bring in the right professionals
Design, engineering, financing, permitting or specialty trades enter when the project actually needs them.
4
Permit and build
Your contractor leads construction while the ecosystem remains available for the questions outside the jobsite.
5
Close out and live
Inspections, final documentation, occupancy, accessories and long-term use complete the journey.
Approval before positioning
Master GC candidates are reviewed for licensing, insurance, ADU experience, references and homeowner practices before they are positioned in a territory.
One position per territory
Territory exclusivity creates a clear point of accountability for Exchange-routed opportunities. It does not remove the homeowner’s right to choose another contractor.
Homeowner choice stays intact
The ADU Exchange is an education and connection ecosystem, not the builder. Your construction agreement is directly with the contractor you choose.
Why an ADU-focused GC matters
An ADU is small. The coordination problem is not.
A detached ADU can involve site access, excavation, utilities, foundations, framing, roofing, windows, mechanicals, electrical, plumbing, insulation, finishes, permitting, inspections and closeout. Conversions bring their own structural, fire-safety, egress and systems questions.
The value of the Master GC program is not that one contractor knows everything. It is that the contractor is positioned inside an ADU-specific network designed to help the project get the right answer at the right stage.
Homeowner FAQ
Questions homeowners ask.
Short answers, without turning the page into a legal document.
What exactly is a Master GC?
A licensed general contractor selected through The ADU Exchange Master GC review and positioned as the Master GC for one defined New England territory. The program is designed to give homeowners a clear construction starting point backed by the broader ecosystem.
Do I have to use the Master GC for my town?
No. You remain free to work with any contractor you choose. The homeowner tools and other ADU Exchange departments remain available whether or not you hire the Master GC.
What does “backed by the ecosystem” actually mean?
It means the contractor is positioned inside a connected ADU environment that includes homeowner feasibility tools, design and blueprint resources, financing, legal and permitting resources, ADU-focused trades, municipality information, real estate professionals, accessibility and accessory partners, and education.
Does the ADU Exchange build my project?
No. The ADU Exchange is an education and connection ecosystem. Your contractor is an independent business, and your construction agreement is directly with the contractor you hire.
What if my territory says “Selection in progress”?
The territory has not yet been assigned a Master GC. You can still run feasibility, learn the local rules, explore designs, financing and other ecosystem resources, and start organizing the project while the territory review continues.
Are territory cost ranges a quote?
No. They are contextual ranges only. Site conditions, utilities, septic or sewer, access, design, engineering and finish level can materially change actual project pricing. Always obtain a written contractor proposal before relying on a budget.
One contractor is useful.
One contractor connected to the whole ADU journey is better.
Find your Master GC, check your property, and move forward with a clearer path from first question to finished ADU.
