Connecticut
Buying Land in the Southeastern Connecticut Planning Region
Connecticut's Census-designated county-equivalent for the state's southeastern corner is a 19-town planning region, not a county government -- and it's the one Connecticut region where two federally recognized tribal nations, the Mohegan Tribe and the Mashantucket Pequot Tribal Nation, hold substantial reservation trust land alongside ordinary town-zoned property.
What the Southeastern Connecticut Planning Region is, and which towns make it up
The Southeastern Connecticut Planning Region is Connecticut's Census-designated county-equivalent for the state's southeastern corner, one of the state's 9 planning regions recognized as statistical counties since 2022 (see the Connecticut state hub for the full mechanism behind why Connecticut uses planning regions rather than traditional counties at all). It is coterminous with the service area of the Southeastern Connecticut Council of Governments (SCCOG) and comprises 19 towns: Bozrah, Colchester, East Lyme, Franklin, Griswold, Groton, Lebanon, Ledyard, Lisbon, Montville, New London, North Stonington, Norwich, Preston, Salem, Sprague, Stonington, Waterford, and Windham.
At roughly 598 square miles and about 280,400 residents at the 2020 Census, this region's economy and land-use pattern are shaped by two forces found nowhere else in Connecticut. First, the U.S. Navy's Naval Submarine Base New London and General Dynamics Electric Boat -- both headquartered in Groton, employing roughly 21,000 people combined at Electric Boat alone as of 2024 -- make this region a genuine center of federal and defense-industry activity, with Groton informally known as the "Submarine Capital of the World." Second, and distinctively: this is the one Connecticut region where two federally recognized Indian tribes hold substantial reservation land -- the Mohegan Tribe of Indians of Connecticut in Montville (home to Mohegan Sun) and the Mashantucket Pequot Tribal Nation in Ledyard (home to Foxwoods Resort Casino). Both tribes are SCCOG members in their own right, alongside the region's 19 towns.
Zoning is town-by-town under CGS Chapter 124 -- name a few towns as examples, not a regional office
As explained on this project's Connecticut state hub, zoning statewide runs entirely through each town's own Planning and Zoning Commission under Connecticut General Statutes Chapter 124 -- that mechanism is not repeated here. SCCOG is not a zoning authority and does not substitute for it. A parcel in Stonington is zoned entirely by Stonington's own Planning and Zoning Commission; a parcel in East Lyme falls under East Lyme's separate zoning regulations; a parcel in Ledyard is governed by Ledyard's own Planning and Zoning Commission, run day-to-day through its Department of Land Use and Planning. Norwich, the region's core city, runs its own separate municipal zoning administration distinct from any of the surrounding towns.
For a land buyer, this means the only correct call for any specific parcel is that parcel's own town Planning and Zoning office -- there is no SCCOG zoning desk and no fallback county office. This applies even to land near, but outside, the Mohegan or Mashantucket Pequot reservation boundaries in Montville and Ledyard: ordinary private fee land near a reservation is still zoned by that town like any other parcel. What changes inside a reservation's federal trust land is a separate, genuinely distinctive question -- covered on the dedicated tribal-trust-land-status page linked below rather than repeated here.
Septic: this region's health-district map resolves cleanly across all 19 towns
Septic permitting in Connecticut runs through a local director of health under the state's Public Health Code (see the state hub for the full mechanism), and this region is unusual among Connecticut's 9 planning regions in that its health-district coverage resolves completely. The Uncas Health District covers Bozrah, Franklin, Griswold, Lebanon, Lisbon, Montville, Norwich, Preston, Salem, and Sprague -- 10 of this region's 19 towns -- reviewing septic and well permit applications, monitoring test holes and percolation tests, and inspecting installations for Public Health Code compliance. The Ledge Light Health District covers East Lyme, Groton, Ledyard, New London, North Stonington, Stonington, and Waterford -- a further 7 towns -- reviewing proposed and existing lots served by onsite septic and wells and issuing approvals.
The remaining 2 towns are each covered by a district based primarily in a neighboring planning region: Colchester is served by the Chatham Health District (whose other member towns -- East Haddam, East Hampton, and Portland -- sit in the Lower Connecticut River Valley Planning Region, and Hebron and Marlborough in the Capitol Planning Region, both covered elsewhere in this project's Connecticut coverage). Windham is served by the North Central District Health Department, based primarily in the Capitol Planning Region. Between Uncas, Ledge Light, Chatham, and North Central, every one of this region's 19 towns has a confirmed septic-permitting authority -- a genuinely complete picture.
SCCOG's real, limited coordinating role -- and why this region has a dedicated tribal trust land page
The Southeastern Connecticut Council of Governments (SCCOG) is the voluntary regional body that coordinates transportation planning (it is the region's designated authority for prioritizing state and federal transportation funding) and other shared services across its member towns. SCCOG's membership distinctively includes the Mohegan Tribe and the Mashantucket Pequot Tribal Nation directly, alongside its 19 towns and the CT Department of Transportation and Southeast Area Transit -- but like every Connecticut COG, SCCOG itself holds no zoning, septic, or wetlands permitting authority over any specific parcel. SCCOG's own site is secogct.gov.
This region is the only one of Connecticut's 9 planning regions where federally recognized tribal reservation land sits alongside ordinary town-zoned property in a genuinely significant way, and where current, specific, actively evolving legal and financial developments make this more than historical color: a federal court injunction has, as of this research pass, blocked a pending 82-acre fee-to-trust transfer in Ledyard amid a lawsuit the State of Connecticut filed against the U.S. Department of the Interior, and a 2025 agreement between the Mohegan Tribe and the Town of Montville restructured how much newly designated reservation-area land is shielded from local property tax. Because these are real, current, and specific enough to justify their own page -- not a rehash of casino history -- see the dedicated Tribal Trust Land Status page for what this means for anyone buying land in or near Montville or Ledyard.
Who to Call Before Buying Land in Southeastern Connecticut Planning Region
There is no Southeastern County government and no regional planning or health department -- none exists. SCCOG is listed above for its real but limited regional-coordination role, not as a zoning or septic authority; note that SCCOG's own membership distinctively includes the Mohegan Tribe and the Mashantucket Pequot Tribal Nation directly. Uncas and Ledge Light together cover 17 of this region's 19 towns; Colchester (Chatham Health District) and Windham (North Central District Health Department) are each covered by a district based primarily in a neighboring planning region -- see those regions' own hubs for that district's full contact details rather than duplicating them here. Neither the Mohegan Tribe nor the Mashantucket Pequot Tribal Nation is listed as an officialContacts entry here, since tribal government offices are not the same kind of contact as a town or regional agency and reservation land-status questions are covered on the dedicated tribal-trust-land-status page instead.
Other
Southeastern Connecticut Council of Governments (SCCOG)
General regional planning and transportation-funding coordination for this region's 19 towns -- NOT zoning authority, which stays with each individual town's own Planning and Zoning Commission.
Planning & Zoning
Town of Ledyard -- Department of Land Use & Planning / Planning & Zoning Commission
Zoning and permitted-use questions for Ledyard specifically -- one example of this region's 19 separate town zoning authorities, and the town containing the Mashantucket Pequot reservation, not a regional or tribal office.
Septic / Onsite Wastewater
Uncas Health District
Septic permitting and environmental health for Bozrah, Franklin, Griswold, Lebanon, Lisbon, Montville, Norwich, Preston, Salem, and Sprague.
Septic / Onsite Wastewater
Ledge Light Health District
Septic permitting and environmental health for East Lyme, Groton, Ledyard, New London, North Stonington, Stonington, and Waterford.
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Sources
- Southeastern Connecticut Planning Region, Connecticut — Wikipedia (accessed 2026-09)
- Southeastern Connecticut Council of Governments (SCCOG) — Southeastern Connecticut Council of Governments (accessed 2026-09)
- Municipalities by Planning Region and COG — Connecticut Office of Policy and Management (accessed 2026-09)
- Northeastern Connecticut Council of Governments (NECCOG) — Northeastern Connecticut Council of Governments (accessed 2026-09)
- Uncas Health District — Uncas Health District (accessed 2026-09)
- About Us -- Ledge Light Health District — Ledge Light Health District (accessed 2026-09)
- Planning & Zoning Commission — Town of Ledyard, Connecticut (accessed 2026-09)
- As Electric Boat hiring surges, eastern CT feels the boom — The Connecticut Mirror (accessed 2026-09)
Last reviewed 2026-09