Zoning, building permits and septic rules in Village of Southampton, New York

Village of Southampton’s own rules

• Local zoningPresent

  Land inside the Village of Southampton (Suffolk County), NY

  • Chapter 116 Zoning (§ 116-1 to § 116-88) is in the village code on eCode360.

  “(3) mobile homes: not permitted. c. least overall dimension.”

• Minimum dwelling sizeSpecified

  One-family and two-family detached dwellings, by required lot area of the zoning district, inside the Village of Southampton

  • Minimum floor area is first-floor area; exclusive of unenclosed porches, breezeways, garages and basement/cellar areas.
  • Least overall dimension of the minimum first floor is 20 feet.
  • Section amended 12-11-2025 by L.L. No. 15-2025.
  • Apartments: 600 sq ft for 1 room, plus 100 per additional room.

  first floor, 1-story, lot area 10,000 sq ft or less: >= 800 sq ft · first floor, 1-story, lot area 10,001 to 20,000 sq ft: >= 1000 sq ft · first floor, 1-story, lot area over 20,000 to 40,000 sq ft: >= 1500 sq ft · first floor, 1-story, lot area over 40,000 sq ft: >= 2000 sq ft

  “1-story building or first floor 1 1/2-or-more-story building first floor other floors 10,000 or less 800 800 400 10,001 to 20,000 1,000 900 500 over 20,000 to 40,000 1,500 1,250 750 over 40,000 2,000 1,500 900”

• Living in an RVProhibited

  Trailers or vehicles used for living or sleeping inside the Village of Southampton

  • Chapter 105 does not apply to a trailer or vehicle installed with permanent plumbing and sanitary connections and upon rigid supports before June 1, 1954.
  • Penalties are under Chapter 1, Article II of the village code.

  “no trailer or vehicle used for living or sleeping purposes standing either on wheels or on rigid supports shall be established or maintained for such living purposes or sleeping purposes within the limits of the village of southampton.”

• Camping on your landProhibited

  Living or sleeping in a trailer or vehicle inside the Village of Southampton (tent camping not separately researched)

  • Pre-June 1, 1954 plumbed trailers on rigid supports are exempt.
  • Tent camping rules were not found.

  “no trailer or vehicle used for living or sleeping purposes standing either on wheels or on rigid supports shall be established or maintained for such living purposes or sleeping purposes within the limits of the village of southampton.”

• Manufactured homesProhibited

  Mobile homes as dwellings inside the Village of Southampton, per the minimum residential floor area section

  • The text appears in § 116-17(b)(3); amended 12-11-2025 by L.L. No. 15-2025.
  • Treatment of modular or HUD-code manufactured homes was not separately researched.

  “(2) apartment dwelling units, where permitted. number of rooms minimum apartment unit area (square feet) 1 room, studio or efficiency 600 each additional room 100 (3) mobile homes: not permitted.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Village of Southampton or Suffolk County directly.

• Building permit — Building permits inside the Village of Southampton
• Owner-builder exemption — Owner-builder exemption inside the Village of Southampton
• Building code adopted — Building code inside the Village of Southampton
• Inspections — Building inspections inside the Village of Southampton
• Certificate of occupancy — Certificates of occupancy inside the Village of Southampton

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.