Zoning, building permits and septic rules in Town of Plymouth, New Hampshire

Town of Plymouth’s own rules

• Local zoningPresent

  Land inside Plymouth town limits; the town's own zoning ordinance governs use and dimensional standards there.

  • Zoning districts are listed in Article III, section 301 of the ordinance.
  • The planning page lists the Plymouth Zoning Ordinance as revised and adopted March 10, 2026.

  “the town of plymouth is divided into the following zones as shown on the official zoning map on file”

• Zoning districtsPublished

  Zoning districts of Plymouth town

  • Districts: SFR single-family residential, MFR multi-family residential, A agricultural, CI civic/institutional, VC village commercial, HC highway commercial, ICD industrial and commercial development; overlays F, ES, AR, FRROD and TMOD.
  • Official zoning map revised 3-11-2025 is listed on the planning page; the ordinance is adopted March 10, 2026.

  “sfr – single-family residential mfr – multi-family residential a – agricultural ci – civic/institutional vc – village commercial hc – highway commercial icd – industrial and commercial development”

• Building heightSpecified

  Principal buildings in all zones inside Plymouth town limits, under the general height regulation in Article IV

  • Flagpoles, chimneys, spires, towers and similar superstructures may extend above the limit.
  • Freestanding chimneys or towers require a special exception from the Board of Adjustment.
  • Village commercial frontage on Main Street has its own 35-foot measure from the average elevation of Main Street.

  maximum building height: <= 35 feet (measured from average finished grade of the land surrounding the structure)

  “the height of any building shall not be greater than 35 feet as measured from the average finished grade of the land surrounding the structure.”

• Living in an RVTemporary only (with conditions)

  Use of a recreational vehicle as living quarters on land inside Plymouth town limits

  • No recreational vehicle or tent may be used as a permanent dwelling, except under section 403.2.
  • Section 403.2 permits are issued by the selectmen for up to one year, renewable only while construction is active, and are conditioned on removal of the structure at expiration.
  • Temporary use is limited to construction-incidental manufactured homes, trailers, or portable structures, provided proper sanitary facilities are required.

  temporary permit term: <= 1 year (renewable while construction is active)

  “no recreational vehicle or tent, as defined by rsa 216-i:1, may be used as a permanent dwelling at any time except in accordance with the provisions of section 403.2.”

• Manufactured homesLimited

  Manufactured housing inside Plymouth town limits; the section 304 use table lists it as permitted in the A (agricultural) zone and by special exception in the VC, HC and ICD zones, and not listed as allowed in SFR, MFR or CI.

  • Permitted in the A zone (use table shows p).
  • Special exception from the Board of Adjustment in VC (with footnote 1), HC and ICD.
  • The use table column reading was taken from text extraction of the PDF table; verify before relying on the zone-by-zone reading.

  “continuing care retirement community - - p - - - - manufactured housing - - p - se1 se se multifamily dwelling”

• Driveway accessLimited

  Driveways for all uses inside Plymouth town limits

  • Driveways must be at least 75 feet from a street line intersection.
  • Curb-cut limits for multi-dwelling conditional uses are separate.

  minimum driveway distance from street-line intersection: >= 75 feet

  “all driveways are to be located at least seventy-five feet from a street line intersection for all uses.”

• Permit feesPublished

  Building permit and planning/zoning application fees for Plymouth town

  • The Building Permit Application Fee Schedule is listed on the planning page; the amounts were not opened.
  • The page warns that planning and zoning board fees are due at submission and that Plymouth does not invoice for them.

  “building permit application fee schedule document seq 0.00”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Town of Plymouth or Grafton County directly.

• Building permit — New construction inside Plymouth town limits
• Owner-builder exemption — Owner-builder construction inside Plymouth town limits
• Building code adopted — Construction inside Plymouth town limits
• Inspections — Inspections of construction inside Plymouth town limits
• Certificate of occupancy — Occupancy of new buildings inside Plymouth town limits

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Off-grid gear

Going off-grid in Town of Plymouth means bringing your own water and power. The kit we’d start with:

• Water Crystal Quest Filter any source — well, rain, or creek — to drinking-clean.
• Power Bluetti Solar generators and home battery backup for living off the grid.
• Septic Soil percolation test kit Run your own perc test before paying an engineer — the first thing a septic office asks about.
• Water Well water test kit Bacteria, nitrates, hardness — know what the well on a parcel is really pumping.

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