What is a conservation commission Notice of Intent in Massachusetts?

A Notice of Intent, or NOI, is the application a homeowner or contractor files with a town's Conservation Commission to do work in or near a wetland resource area under the Wetlands Protection Act (M.G.L. c.131 §40 and 310 CMR 10.00). It triggers abutter notification, a newspaper advertisement, and a public hearing, and it ends with a permit called an Order of Conditions. Because the filing is a public record that posts on the commission's hearing agenda before any work starts, it is one of the earliest readable signals that a site project is coming to a specific address.

Why does a conservation commission filing come before the building permit?

For work near a wetland or river, Massachusetts law puts the Conservation Commission first. The homeowner has to secure the Order of Conditions, wait out the 10-business-day appeal period, and record the Order at the Registry of Deeds before the town will issue a building permit for the same work. That sequence is why the con-com record shows up weeks to months ahead of the building permit. By the time the building permit posts, the homeowner has already been through a public hearing and picked most of their team.

What is the difference between a Notice of Intent and a Request for Determination of Applicability?

A Request for Determination of Applicability (RDA, WPA Form 1) is the lighter filing, used for small or edge-case work where it is unclear whether the wetland rules even apply, like a deck or shed set back from the resource area. A Notice of Intent is the full application for larger work clearly in or near a resource area: additions, new dwellings, pools, septic systems, driveways, and regrading. The NOI is the higher-value signal because it means engineered plans, a hearing, and a real budget.

Which trades get the most from conservation commission leads?

Site and excavation crews, septic installers, landscaping and hardscape companies, pool builders, and addition or new-construction GCs. Any trade whose work involves moving earth, adding structures, or installing systems near water shows up in these filings. Septic installers in particular live in this data, because a failed or upgraded system near a wetland almost always files with the commission before it files anywhere else.

Conservation Commission Permits: The Pre-Build MA Lead

By the permits.llc team · Last reviewed July 9, 2026 · Optimal window: Weeks 1–8

TL;DR

On a parcel near a wetland or river, the Conservation Commission permits the work before the building department does.
The Order of Conditions must be recorded before a building permit for the same work can issue.
That makes the Notice of Intent a public lead signal weeks to months ahead of the building-permit feed.
Watch the con-com hearing agenda for NOI filings, and reach the homeowner in Weeks 1–8.

Most permit lead work starts and stops at the building-permit feed. That is fine for a kitchen remodel in the middle of a dry upland lot. It is late, sometimes badly late, on the tens of thousands of Massachusetts parcels that sit near a wetland, a pond, a coastal bank, or a river.

On those properties the order of operations is reversed. Before the building department will touch the application, the homeowner has to clear the local Conservation Commission under the Wetlands Protection Act. That process is public, it is slow, and it leaves a paper trail on the commission's hearing agenda long before a building permit exists.

A permit is a signal about the homeowner, not the contractor who filed it. Near water, the earliest version of that signal is not a building permit at all. It is a Notice of Intent.

What a conservation commission filing actually means for Massachusetts contractors

Massachusetts protects wetlands through two layers. The Wetlands Protection Act (M.G.L. c.131 §40), with regulations at 310 CMR 10.00, is the state law every town enforces through a local Conservation Commission. The Rivers Protection Act of 1996 added a 200-foot Riverfront Area along perennial streams and rivers. Together they pull a wide band of ordinary residential land under commission review.

The trigger is proximity, not the type of work. If a project falls in a wetland resource area, within the 100-foot buffer zone around it, or inside the 200-foot Riverfront Area, the homeowner has to file before they build. For anything beyond a minor question, that filing is a Notice of Intent, or NOI.

The NOI is not a rubber stamp. It requires abutter notification, an advertisement in the local paper, a filing fee, usually an engineered site plan showing the wetland line, and a public hearing in front of the commission. The commission then issues its permit, the Order of Conditions, which approves the project with protective conditions or denies it.

Here is the part that matters for lead generation. That Order of Conditions is a prerequisite to the building permit. The homeowner has to wait out a 10-business-day appeal period, record the Order at the Registry of Deeds, and bring proof of recording back to the commission before the town will issue a building permit for the same work. By the time the building permit posts in the feed, the wetland-adjacent homeowner has already sat through a public hearing, hired an engineer or wetland scientist, and started choosing their crew.

The exact filings that flag a wetland-adjacent lead

Not every commission filing is the same lead. Read the filing type for what it tells you about scope, budget, and how much time you have.

Filing	What triggers it	What it tells a lead-miner
Notice of Intent (NOI)	Larger work in or near a resource area or the 200-foot Riverfront Area: additions, new dwellings, pools, septic, driveways, regrading, demolition	The high-value signal. Engineered plans, a public hearing, an Order of Conditions, months of runway. Higher-ticket site work.
Request for Determination of Applicability (RDA, WPA Form 1)	Small or edge work where jurisdiction is unclear, often set back from the resource: a deck, shed, or native planting	A lighter lead. Sometimes a negative determination clears the work outright, but it still names the parcel and the intent.
Abbreviated Notice of Resource Area Delineation (ANRAD)	An owner wants the wetland boundary confirmed before designing	Pre-design stage. A project is coming, not yet scoped. Earliest possible touch.
Emergency Certification	Storm damage, a failed septic system, or an imminent threat near a resource area	Urgent, reactive work. A same-week lead for septic and site crews.
No commission filing	Ordinary work more than 100 feet from any resource area and outside the Riverfront Area	Not a con-com lead. Read the building-permit feed for these.

The Notice of Intent is the record to build a routine around. It self-selects for money. Nobody files an NOI, pays for an engineered plan, and notices their abutters to do a job that does not justify the trouble. The filing itself screens out the small stuff, which is the opposite of the raw building-permit feed where a water-heater swap and a full addition look similar until you read the detail.

The RDA is the lighter cousin. A homeowner filing a Request for Determination for a deck near the buffer is a real lead, just a smaller and faster one. Keep them, rank them below the NOIs.

The Emergency Certification is the sleeper. A septic system failing next to a wetland cannot wait for a normal hearing, so the commission issues an emergency certification and the work happens fast. For a septic installer, that filing is close to a purchase order, and it is public.

When to reach out (and why the building permit is already late)

The window opens the moment the NOI hits the commission's agenda and runs productively for about eight weeks, longer for filings that will not break ground until the next season. The sweet spot is Weeks 1 through 4, while the hearing is being scheduled and the Order of Conditions is still being negotiated.

Why so early. Because the whole point of watching the commission is that you are reading the project before the building-permit crowd can. A hearing has to be advertised in advance, so the filing is often visible even before the homeowner has stood in front of the board. Reach them in that window and you are talking to someone who has committed to a site project but has not yet been solicited by anyone reading building permits, since that record will not exist for weeks.

There is a second, slower clock worth keeping. An Order of Conditions is valid for three years and can be extended. A filing approved this spring might not turn dirt until next spring. Those older Orders belong in a longer follow-up rotation, timed to the build rather than the filing, so you are not chasing a homeowner who is still waiting on financing or design.

What to say in your outreach

Direct mail fits this lead well, because the property address is on the filing and the homeowner is right there. The move is to reference the specific project stage without sounding like you have been snooping. The commission hearing is a public proceeding, so there is nothing awkward about knowing a wetland project is underway.

Sample letter, Notice of Intent for a waterfront addition, mailed in Weeks 1–3

Dear [Homeowner Name],

My name is Rachel Tavares, and I run Coastal Site & Excavation here in Plymouth County. I understand you have a project in front of the Conservation Commission for work near the wetland on your property, and I wanted to reach out early while plans are still coming together.

Wetland-adjacent jobs live and die on the site work: the erosion controls, the grading that keeps runoff out of the resource area, and the sequencing that keeps you inside your Order of Conditions. Getting that right the first time is what keeps a project from stalling at inspection.

We do this kind of work across [town] and the South Shore, and I would be glad to look at your plan and tell you honestly what the sitework will take. No charge for that, and no pressure.

You can reach me at (508) 555-0148.

Rachel Tavares Coastal Site & Excavation | Plymouth County, MA

The letter names the real stage the homeowner is in, points at the part of the job they are probably most anxious about, and offers a low-commitment next step. A landscaping and outdoor crew can run the same play off an NOI that describes plantings, buffer restoration, or a permeable patio inside the Riverfront Area.

Massachusetts geography that produces conservation commission leads

Wetland density is not evenly spread, and neither are these filings. The towns that generate the most NOI volume fall into a few patterns worth targeting directly.

The river-and-pond suburbs west of Boston lead the state. Concord, Sudbury, Wayland, and Sherborn sit on the Sudbury and Assabet river systems with large-lot homes pressed against protected land, so a high share of additions and pools there route through the commission first. Every one of those projects clears an Order of Conditions before a shovel moves.

The coastal towns are the second engine. Duxbury, Marshfield, Scituate, and the Cape towns around Barnstable stack coastal wetland rules on top of the standard buffer, which means second-home renovations, new septic, and shoreline work all file. This is where the south-shore coastal permit pipeline overlaps with commission filings most heavily, and where a single waterfront parcel can carry site, septic, and landscaping work at once.

Then there are the everyday buffer-zone towns that most crews overlook. A Framingham or Natick lot backing up to a stream is under the same 100-foot buffer as a Concord estate. The filings are less glamorous but far more numerous, and the competition reading them is thinner.

Match the record to the town. Chase NOIs in the river suburbs and coastal communities, and do not skip the ordinary buffer-zone parcels where a routine addition still has to clear the commission.

How exclusivity works for site and wetland-adjacent trades

permits.llc assigns leads on a non-compete county basis: one business per niche per county, held until cancel. A site or septic crew that claims Plymouth County holds the Notice of Intent, Request for Determination, and emergency certification signals for that county exclusively. No competing business in the same niche and county receives the same feed.

Exclusivity matters more here than almost anywhere, because the commission filing gives you a head start measured in weeks. Holding the county outright means every qualifying con-com filing routes to one business while competitors are still waiting for the building permit to appear. In a wetland-dense county, that early-signal advantage compounds across a season into a steady book of site, septic, and landscaping work.

High-volume counties can be split by sub-region when it makes sense. A crew might hold the coastal towns of Plymouth County and leave the inland ring open. The default, though, is a full-county lock held for as long as the subscription runs.

How permits.llc fits in

permits.llc aggregates 167,000+ Massachusetts permit records across 92 cities and 11 counties, refreshed daily from official municipal portals. Conservation Commission filings, Notices of Intent, and the building permits that follow them enter the system within 24 hours and route to the trades that solve them, before landing with the exclusive county holder. Each record carries the property address, filing type, and filed date, so outreach can start while the hearing is still on the calendar.

The reason this beats a raw building-permit feed is timing. On a wetland-adjacent parcel, reading only building permits means arriving after the Order of Conditions, after the engineer, and often after the crew is chosen. The framework in scoring permit leads applies directly to ranking NOI filings by scope, and the same wetland rules drive the nitrogen-zone signals covered in Title 5 watershed permits and the site sequencing behind foundation permits. For an investor or builder sourcing waterfront projects, the commission filing is the first place a deal shows up in public.

Start with the free 2026 dataset: download every 2025 Massachusetts permit and look for the Conservation Commission and Notice of Intent records in your county at the free MA permit download. When you are ready to work this season's filings as they land, set up daily alerts for your trade and county and reach each homeowner during the hearing window, weeks before the building permit ever posts.