Building near the water in Reading, Massachusetts (wetlands rules)
Work within 100 feet of a wetland, pond or stream, within 200 feet of a river, or in the 100-year floodplain needs Conservation Commission approval under Reading's local Wetlands Protection Bylaw. The Commission normally keeps a no-disturb strip of natural vegetation at least 25 feet wide along wetlands. It also bars new structures, including sheds, pools, patios and fences, within another 10 feet of that strip, so roughly 35 feet from the wetland.
| Buffer zone needing approval | Land within 100 feet of a bank, wetland, pond, stream or similar resource area [1] |
| Riverfront area | Within 200 feet of a perennial stream, river or manmade canal [5] |
| No-disturb zone (Zone of Natural Vegetation) | Normally at least 25 feet wide [3] |
| No-structure zone | No new structures within 10 feet of the no-disturb zone [9] |
| Buffer-zone alteration fee | $1.25 per sq ft within 25 ft of a resource area (or a permanent structure within 35 ft) [7] |
| Overhangs (eaves, bay windows) | No closer than 7 feet to the no-disturb zone [4] |
What's regulated
Reading's General Bylaw §7.1 is a local wetlands bylaw that applies alongside the state Wetlands Protection Act. No one may remove, fill, dredge or alter a bank, wetland, marsh, swamp, stream, river, pond or lake, land within 100 feet of any of those, land subject to flooding, or riverfront area, without filing a notice and getting an Order of Conditions from the Conservation Commission [1]. The Conservation Division describes this as any work within 100 feet of a wetland, lake or pond, 200 feet of a river or stream, or in the 100-year floodplain. It includes landscaping, cutting trees or shrubs, additions, decks, patios, driveways and grading [2]. The regulations protect all land within 200 feet of a perennial stream, river or manmade canal as riverfront area [5].
Setbacks from wetlands
The Commission's regulations (December 2023) require a Zone of Natural Vegetation (no-disturb zone), normally at least 25 feet wide, and wider for steep slopes or vernal pools [3]. A no-structure zone extends 10 feet beyond that. No foundations, retaining walls, pools, fences, patios, sports courts, driveways or sheds may go there, and overhangs can come no closer than 7 feet [9][4]. The Commission may reduce the setback for existing developed sites if a permanent hedge, fence or wall marks the edge [10].
Small projects
Some work counts as a Minor Project that the Conservation Administrator can approve without a full filing [6]. Examples are unpaved walkways, wildlife-friendly fences, native plantings, and above-ground pools or small freestanding sheds more than 50 feet from wetlands. New foundations, filling, grading, and work near vernal pools or within 25 feet of a resource area don't qualify.
Fees and floodplain
Fees include $1.25 per sq ft of buffer zone altered close to a resource area [7]. Separately, the Zoning Bylaw's Floodplain Overlay District covers FEMA flood zones on maps dated July 8, 2025 [8]. The Building Division also requires Conservation approval for sheds, pools, decks and fences, whatever their size.
The bylaw and regulations don't directly address expanding a nonconforming structure near water. Ask the Commission.
Next steps
- Check the town's wetland and floodplain map (linked from the Conservation Division page) to see if your project is within 100 feet of a wetland or 200 feet of a river.
- Call the Conservation Administrator (781-942-6616) before planning. Ask whether the work can be a Minor Project or needs a Request for Determination or a Notice of Intent.
- For a Notice of Intent, prepare plans showing the wetland line, the 25-foot no-disturb zone and the 10-foot no-structure zone, then attend the Commission hearing (2nd and 4th Wednesdays).
- Get the Order of Conditions recorded and follow it, including any boundary markers, before you start work.
Common questions
- Do I need Conservation Commission approval to build near a wetland in Reading, Massachusetts?
- Yes. Work within 100 feet of a wetland, pond or stream, within 200 feet of a river, or in the 100-year floodplain needs Conservation Commission approval under Reading's local Wetlands Protection Bylaw.
- How close to a wetland can I build in Reading, MA?
- The Commission normally keeps a no-disturb strip at least 25 feet wide along wetlands and bars new structures, including sheds, pools, patios and fences, within another 10 feet, so roughly 35 feet from the wetland. It may reduce the setback for some developed sites.
- Are there small projects near wetlands that don't need a full filing in Reading, Massachusetts?
- Yes. Some work counts as a Minor Project the Conservation Administrator can approve, such as unpaved walkways, wildlife-friendly fences, native plantings, and above-ground pools or small freestanding sheds more than 50 feet from wetlands.
Massachusetts wetlands rules and the Conservation Commission
Massachusetts has no "shoreland zoning" like some states. Instead, the Wetlands Protection Act (M.G.L. c. 131, §40) and MassDEP's regulations (310 CMR 10.00) control work near water, and your local Conservation Commission enforces them.
What's protected:
- Wetlands, banks, beaches, dunes, marshes, land under ponds and streams, and 100-year floodplains.
- The riverfront area: 200 feet from a perennial river or stream, shrinking to 25 feet in certain dense urban areas.
- The buffer zone: land within 100 feet of a wetland, bank, beach or similar resource area. Most work here needs Conservation Commission review.
How approval works:
- Contact the Conservation Commission before starting any work in these areas. That includes additions, decks, sheds, driveways, regrading and clearing vegetation.
- If you're unsure whether the law applies, file a Request for Determination of Applicability (RDA).
- If the work will affect a resource area, file a Notice of Intent (NOI) with plans and a fee. A public hearing follows, and the commission issues an Order of Conditions approving (with conditions) or denying the project.
- Applicants, abutters, groups of 10 residents or MassDEP can appeal to MassDEP.
Local bylaws can be stricter. Many towns have their own wetlands bylaw with larger buffers or no-build zones, and the Conservation Commission enforces those too.
What the bylaw says
- §7.1.3 Notice to the Conservation Commission, Town of Reading General Bylaw ('General Bylaw - April 2026'), p. 35
No person shall remove, fill, dredge or alter the following resource areas: bank; fresh water wetland; marsh; meadow; bog; swamp; creek; river; stream; pond; lake; lands under water bodies; land within one hundred feet of any of the preceding resource areas; land subject to flooding; and riverfront area, other than in the course of maintaining, repairing or replacing, but not substantially changing or enlarging an existing and lawfully located structure or facility used in the service of the public and used to provide electric, gas, water, sanitary sewer, storm drainage, public roadway, telephone, telegraph and other telecommunication services, without filing written notice of that person’s intention to so remove, fill, dredge or alter and without receiving and complying with an Order of Conditions, and provided all appeal periods have elapsed.
- Conservation Division overview, Conservation Division - what needs a wetland permit (Conservation Commission overview page), p. 1
The commission reviews all proposed activity within regulated areas. These areas include any work within 100 feet of a wetland, lake, or pond, within 200 feet of a river or stream, or within the 100-year floodplain.
- Section 3D.2 Zone of Natural Vegetation, Reading Conservation Commission Wetlands Protection Regulations (December 2023), p. 11
2 Under most conditions, a zone width of a minimum of twenty-five feet would be considered sufficient to accomplish this purpose.
- Section 3D.4 No-Structure Zone, Reading Conservation Commission Wetlands Protection Regulations (December 2023), p. 11
Associated structures, including but not limited to the following: cantilevered structures, bay windows, eaves, and, garrisons, or other overhangs, may protrude to no closer than seven feet from the ZNV.
- Section 3G Riverfront Area, Reading Conservation Commission Wetlands Protection Regulations (December 2023), p. 12
Proposed work in riverfront areas, including work within 200 feet of any perennial stream, river, or manmade canal, shall conform to the performance standards of 310 CMR 10.58, as amended.
- Section 4G.3 Minor Projects, Reading Conservation Commission Wetlands Protection Regulations (December 2023), p. 15
b Installation of fencing or free-standing stone walls, provided that they will not constitute a barrier to wildlife movement;
- Fee schedule, line G, Reading Conservation Commission Wetlands Protection Regulations (December 2023), p. 6
G For temporary and/or permanent alteration of land within the Buffer Zone - $1.25 per square foot of Buffer Zone altered for any temporary or permanent alteration within 25 feet of a Resource Area or any permanent structure within 35 feet of a Resource Area.
- §10.1.2 Boundaries of Floodplain District, Town of Reading Zoning Bylaw ('Zoning Bylaw - April 2025', last amended by the April 28, 2025 ATM Art. 16), p. 98
The Floodplain District is established as an overlay district. The Floodplain Overlay District includes all Special Flood Hazard Areas within the Town of Reading designated as Zone A, AE, AH, AO, A99, V or VE on the Middlesex County Flood Insurance Rate Map (FIRM) dated July 8, 2025 issued by the Federal Emergency Management Agency (FEMA) for the administration of the National Flood Insurance Program.
- Section 3D.4 No-Structure Zone, Reading Conservation Commission Wetlands Protection Regulations (December 2023), p. 11
4 To protect the integrity of the Zone of Natural Vegetation or No-Disturb Zone, including the associated root system and canopy, no new structures or fixtures that may not require a building permit, including, but not limited to, foundations, footings, frost walls, retaining walls, pools and pool equipment, fences, patios, sports courts, driveways, sheds, or other in-ground fixtures, shall be permitted within ten feet of the ZNV.
- Section 3D.5, Reading Conservation Commission Wetlands Protection Regulations (December 2023), p. 11
5 Notwithstanding the standards of the preceding paragraph, the Commission may grant a reduced setback distance of structures from the ZNV as a consideration of specific site conditions, such as limited vegetative cover or an existing developed condition, and provided that a permanent physical delineation, such as a solid hedge or an appropriate permanent fence or wall, of sufficient height, shall be provided and shall be maintained between the structure and the ZNV.