East Lyme, CT zoning districts
What each zoning code in East Lyme stands for, read from the town's own adopted regulations. Every parcel we list carries one of these codes; this is where you check what it permits.
Read East Lyme's zoning regulations
| Code | District | Type | Parcels | Opportunities | Our reading |
|---|---|---|---|---|---|
| R40 | —the zone you clicked | None | 4,325 | 0 | Single Family |
| R-10 | Residence Districtthe zone you clicked | Residential | 1,747 | 0 | Unclear |
| R-12 | Residence Districtthe zone you clicked | Residential | 1,733 | 0 | Single Family |
| CA | Commercial Districtthe zone you clicked | Business | 510 | 48 | Multi-family |
| R200 | —the zone you clicked | None | 222 | 0 | Single Family |
| LI | Light Industrial Districtthe zone you clicked | Industrial | 165 | 5 | Multi-family |
| R20 | —the zone you clicked | None | 131 | 2 | Multi-family |
| CB | Commercial Districtthe zone you clicked | Business | 120 | 0 | Single Family |
| SU | Special Use Districtthe zone you clicked | Special | 70 | 0 | Multi-family |
| SU-E | Special Use Elderly Housing Districtthe zone you clicked | Residential | 44 | 0 | Multi-family |
| R120 | —the zone you clicked | None | 24 | 0 | Unknown |
| CM | Commercial Districtthe zone you clicked | Business | 11 | 0 | Unknown |
| R80 | —the zone you clicked | None | 9 | 0 | Unknown |
| L1 | —the zone you clicked | None | 4 | 0 | Unknown |
| R | —the zone you clicked | None | 3 | 0 | Unknown |
| RU | —the zone you clicked | None | 3 | 0 | Unknown |
| GDPP | —the zone you clicked | None | 2 | 0 | Unknown |
| RU-40 | Rural Districtthe zone you clicked | Residential | 2 | 0 | Unknown |
| AC | —the zone you clicked | None | 1 | 0 | Unknown |
| CA/RU40 | —the zone you clicked | None | 1 | 0 | Unknown |
| IND | —the zone you clicked | None | 1 | 0 | Unknown |
| RU-80 | Rural Districtthe zone you clicked | Residential | 1 | 0 | Unknown |
| T40 | —the zone you clicked | None | 1 | 0 | Unknown |
| R54 | —the zone you clicked | None | 0 | 0 | Unknown |
Our reading is derived from what is actually built in each district today, not from the code string — a code like R-15 means different things in different Connecticut towns. It is an estimate, and the regulations linked above are the authority.
Where these names come from
Read the town's own PDF: "ZONING REGULATIONS of November 14, 2025" — https://eltownhall.com/wp-content/uploads/2025/11/ZONING-REGULATIONS-of-November-14-2025.pdf (adopted May 4, 1954; cover states as amended through November 10, 2025; footer states effective date July 11, 2024, printed November 14, 2025). Codes from Sec. 2.1 DIVISION OF DISTRICTS and Sec. 2.2 OVERLAY DISTRICTS; official names from the Table of Contents / section headings (Sec. 2A-12A, 11A, 14, 16, 32, 33). Assessor R40 and R80 are returned as the ordinance's RU-40 and RU-80 — the town renamed its R-nn districts to RU-nn (Sec. 5.3 still refers to the "former R-20 District"), and RU-40 / RU-80 are the only 40,000 sf and 80,000 sf districts. Assessor R20 could NOT be matched: the current regulations define no R-20 or RU-20 district and reference R-20 only as a former district, so it is returned unmatched. The Sec. 2.2 overlays "Incentive Housing" and "Parking Overlay CB Zones" carry no letter code; the Affordable Housing District (Sec. 32) and Incentive Housing Zone (Sec. 33) likewise have no abbreviation, so their names are used as the code. Sec. 30 (Aquifer Protection Districts) was removed effective 6/28/2013 and is excluded.