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

Town of Salisbury’s own rules

• Certificate of occupancyLimited

  Only when an ADU property is conveyed and the new owner wants to keep the accessory unit (Salisbury town)

  • Applies to ADU transfers, not to all new construction or occupancy.
  • Purpose is to keep one of the two dwelling units owner-occupied.

  “g. if a property containing an approved adu is conveyed and the new owner wishes to maintain the accessory unit, the new owner shall apply for a certificate of occupancy for the dwelling unit to ensure that one of the two dwelling units is owner occupied.”

• Local zoningPresent (with conditions)

  Land inside Salisbury town limits, under the Salisbury Zoning & Adjustment Board zoning ordinance

  • Uses and dimensional standards are set by district and by the ordinance's table of land uses and table of dimensional requirements.
  • Not verified against the full ordinance text for every district; see search_notes.

  “salisbury zoning & adjustment board “zoning ordinance” last revisions adopted: 3/10/2026”

• Zoning districtsPublished (with conditions)

  Zoning districts inside Salisbury town

  • Districts listed: residential, retail village, agricultural, and village center overlay.
  • District boundaries (maps) were not opened.

  “districts & permitted uses a. residential districts b. retail village districts c. agricultural districts d. village center overlay district”

• Minimum lot sizeSpecified

  Buildable lots inside Salisbury town (Article V, lot size and location of buildings; applies to residential lots generally, including the residential district)

  • Lots on Class VI roads may be buildable subject to the provisions of RSA 674:41, I(c).
  • The planning board may, under its adopted subdivision regulations, reduce the required minimum frontage to encourage open space development.
  • Only one principal residential structure may be located on a buildable lot.

  minimum buildable lot size: >= 2 acres (Amended March 14, 2000 per the ordinance) · minimum frontage: >= 200 feet (Planning board may reduce for open space development)

  “a. the minimum size of a buildable lot shall be two acres. (amended march 14, 2000). b. a buildable lot shall have a minimum frontage of 200 feet.”

• Accessory dwellingsLimited

  Accessory dwelling units on owner-occupied single-family lots inside Salisbury town

  • Permitted as a conditional use in all zoning districts.
  • Only one ADU per principal dwelling and/or lot.
  • The lot must be at least two acres (no ADU on a lot of record under two acres).
  • ADU is permitted only where the owner of record personally resides on the property.
  • Gross living area must be 750 to 950 square feet.
  • ADU total square footage may not exceed 40% (aggregate) of the total heated above-grade floor area of the principal dwelling.
  • An ADU does not count as an additional dwelling unit for minimum lot size.
  • Septic and building-code requirements apply (see septic claims and the ADU life-safety clause).

  minimum lot for ADU: >= 2 acres · ADU gross living area minimum: >= 750 square feet · ADU gross living area maximum: <= 950 square feet · ADU share of principal dwelling heated floor area: <= 40 percent (aggregate) · ADUs per lot: 1 unit

  “c. only one adu shall be allowed per principal dwelling unit and/or lot; but in no case shall an adu be permitted on a lot of record of less than two acres.”

• Subdividing landRegulated (with conditions)

  Subdivision of land inside Salisbury town, through the Planning Board under its adopted subdivision regulations

  • Planning board may reduce required minimum frontage for open space development under its subdivision regulations.
  • The subdivision regulations themselves were not located or reviewed.

  “the planning board may, according to its adopted subdivision regulations, allow a subdivider to reduce the required minimum frontage to encourage open space development as set forth by the master plan.”

Still unanswered

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

• Building permit — Building permit for new home construction inside Salisbury town
• Owner-builder exemption — Owner-builder exemption for permits inside Salisbury town
• Building code adopted — Building code adopted for construction inside Salisbury town
• Inspections — Building inspection for new construction inside Salisbury town
• Minimum dwelling size — Minimum size of a dwelling inside Salisbury town

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 Salisbury 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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