Why Asking the Right Questions Matters
Most Vermont general contractors can build an ADU. Far fewer can manage the permit process, understand your town's specific zoning rules, design around Vermont site constraints, and do all of this with their own dedicated crew. The right questions reveal which category your contractor falls into before you sign anything.
Hiring an ADU contractor in Vermont is a different process than hiring someone to renovate your kitchen. You're not just evaluating craftsmanship — you're evaluating their knowledge of Vermont's ADU law, their permit track record in your specific town, and whether they have the operational depth to manage a multi-phase project over 9–14 months without things slipping through the cracks.
The questions below are designed to be asked during your initial consultation, before any proposals are signed. A contractor who has done this many times will answer them confidently and in detail. One who is new to Vermont ADU work — or who treats ADUs as a side service — will hedge, generalize, or push you toward a separate architect or permit consultant.
Questions About Experience and Specialization
ADU-specific experience in Vermont matters more than general construction volume. A contractor who has built 50 ADUs in Vermont has seen every permit complication, zoning variance, and site constraint you're likely to encounter. A contractor who has built 500 custom homes but only a handful of ADUs is starting fresh on your project in important ways.
Volume matters. Ask specifically about completed ADUs — not projects started, not permits pulled, not ADU additions alongside kitchen remodels. Completed projects that received a certificate of occupancy in Vermont. You want to hear a number that suggests real accumulated experience with Vermont's specific challenges.
Good answer: A specific number with examples — towns, project types, timeline from permit to CO.
A contractor who does ADUs exclusively has tuned their entire operation — estimating, permitting, design, scheduling, subcontractors — around ADU-specific work. A general contractor who adds ADUs to their service list will bring those capabilities, but the institutional knowledge around Vermont's ADU-specific rules won't be as deep.
Good answer: ADUs are our specialty / primary focus, not one service among many.
Every town in Vermont has different zoning officers, different permitting timelines, and different quirks. A contractor who has built in Burlington permitting is different from one who has built in Shelburne or Williston. Photos of completed projects prove both quality and local track record.
Good answer: Yes — here are photos and a reference from a project in [your town or an adjacent town].
Questions About Permits and Zoning
Vermont ADU permitting can be the longest and most unpredictable part of the project. Contractors who manage permitting in-house — with their own staff who know the local zoning offices — move faster and catch issues earlier. Those who leave permitting to you, or who outsource it to a third party, add cost, delay, and a gap in accountability.
This is one of the most important questions on this list. Some contractors build beautifully but leave permitting to you — which means you're suddenly managing an architect, possibly a civil engineer, and the town permit office on your own while also managing the contractor. The best ADU contractors own this process start to finish.
Good answer: We handle the full permit process — zoning review, permit application, and everything through certificate of occupancy.
A contractor who has submitted ADU permits in your town will know whether the process is administrative (faster, no public hearing) or requires a Development Review Board hearing (adds weeks to months). They'll know if your town requires specific documentation, has design standards that affect the project, or has common approval conditions they've navigated before.
Good answer: Yes — [town name] typically takes X weeks. Here's what the application requires and what to expect.
Permit complications happen — a zoning officer requests additional documentation, a neighbor files an objection, or a site condition requires a design revision. How your contractor handles this defines the quality of the working relationship. Experienced ADU contractors treat this as normal problem-solving. Inexperienced ones panic or pass the problem to you.
Good answer: That happens sometimes — here's how we typically handle it, and here's an example from a past project.
Questions About Who Does the Work
Contractors who build with their own crew offer better scheduling control, accountability, and consistency than those who rely heavily on subcontractors. With your own crew, the foreman knows your project cold. With rotating subcontractors, someone different shows up every week who has to get up to speed on your specific job.
Ask this directly and listen for a direct answer. "We have a core crew of our own employees" is different from "we use trusted trade partners for different aspects of the project." Some subcontracting is normal (electrical, plumbing inspections) — but a contractor who self-performs the core framing, insulation, and finish work with their own people will deliver more consistent quality and scheduling.
Good answer: Matt and Eric and our crew will be on your job. We self-perform construction with our own employees.
On a 9–14 month project, you need one person you can call with questions, concerns, or decisions that need to be made. "The office" is not an answer. "Your project manager will be [name]" or "You'll deal directly with the owner" is. Clarity here prevents the most common source of contractor frustration: not knowing who to call when something comes up.
Good answer: You'll have a direct line to [specific name] who will be your contact from permit through certificate of occupancy.
Any contractor worth hiring will give you references immediately. Ask specifically for a homeowner whose ADU has been complete for at least six months — so they've had time to live with the result and notice anything that fell short. A list of references for ongoing projects is less useful than references for projects that are done and occupied.
Good answer: Absolutely — here are three names. Feel free to call them directly.
Questions About Cost and Timeline
ADU estimates that don't account for permit fees, utility connections, and site work are not complete estimates. A realistic timeline from contract to certificate of occupancy in Vermont is 9 to 14 months. Any contractor quoting shorter timelines without a clear explanation of why your project is an exception should be asked to explain in detail.
Low bids are often low because they exclude things: permit fees, utility connection costs, landscaping restoration, appliances, dumpster and site cleanup, or design fees. Ask for an explicit list of what's included and what's not. A complete ADU estimate should cover design coordination, permitting, all construction labor and materials, site work, utility connections, inspections, and the certificate of occupancy process.
Good answer: Here's an itemized breakdown showing what's in and out. Ask about permit fees, utility hookups, and site restoration specifically.
Be skeptical of unusually short timelines. Vermont ADU projects realistically take 9–14 months: permitting runs 4–12 weeks depending on your town, construction runs 4–8 months, and final inspections and certificate of occupancy take additional time. Contractors who tell you they can get it done in 6 months are either working in an unusually simple situation or underestimating the process.
Good answer: For a project like yours in [town], permitting typically takes [X] weeks. Construction would run [X] months. Total time to CO is around [X] months. Here's why.
Every contractor knows the most common cost escalators on their projects. A good one will tell you upfront: unexpected site conditions (old utilities, ledge rock, soil issues), change orders from design modifications, permit conditions that require additional work, material price changes on long projects. Knowing what to watch for lets you plan for it. A contractor who says "nothing, we stand by our estimate" hasn't done enough projects to know better.
Good answer: Honest explanation of site risk factors, change order process, and how they handle unexpected conditions when they arise.
How Vermont ADU Answers These Questions
Vermont ADU handles everything from initial zoning review through certificate of occupancy with our own crew and in-house permit management. Matt and Eric are your direct contacts throughout. We'll walk through every one of these questions in your free consultation — no sales pressure, just straight answers about what your project looks like and how we'd approach it.
We built Vermont ADU specifically to answer "yes" to the questions that matter most. ADUs are all we do. Matt and Eric manage every project directly, with a crew of their own employees. We handle the full permit process and know the zoning offices in Chittenden, Franklin, and Washington County well. And when something comes up — as it always does on a construction project — you have a direct line to the people making decisions.
If you're in the process of evaluating ADU contractors, we're happy to be one of your options. Call us at 802.922.0460 to schedule a free site consultation. We'll answer all twelve of these questions before you've asked them.