Hamden, CT zoning districts
What each zoning code in Hamden 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 Hamden's zoning regulations
| Code | District | Type | Parcels | Opportunities | Our reading |
|---|---|---|---|---|---|
| R4 | —the zone you clicked | None | 8,494 | 0 | Single Family |
| R3 | —the zone you clicked | None | 2,172 | 0 | Single Family |
| R2 | —the zone you clicked | None | 1,999 | 0 | Single Family |
| R5 | Residentialthe zone you clicked | Residential | 1,549 | 955 | Multi-family |
| T4 | —the zone you clicked | None | 806 | 0 | Unclear |
| R-1 | Residentialthe zone you clicked | Residential | 413 | 0 | Single Family |
| T-3 | Sub-Urbanthe zone you clicked | Residential | 317 | 0 | Unclear |
| M | Manufacturing Zonethe zone you clicked | Industrial | 195 | 0 | Single Family |
| R5 N | —the zone you clicked | None | 190 | 103 | Multi-family |
| T5 | —the zone you clicked | None | 156 | 0 | Single Family |
| R4 N | —the zone you clicked | None | 114 | 0 | Single Family |
| T3.5 | General Urbanthe zone you clicked | Mixed Use | 101 | 0 | Unclear |
| R-4 | Residentialthe zone you clicked | Residential | 30 | 0 | Unclear |
| T-1 | Naturalthe zone you clicked | Special | 23 | 0 | Unknown |
| T-4 | General Urbanthe zone you clicked | Mixed Use | 21 | 0 | Unknown |
| R-2 | Residentialthe zone you clicked | Residential | 20 | 0 | Unknown |
| R-3 | Residentialthe zone you clicked | Residential | 12 | 0 | Unknown |
| T-2 | Ruralthe zone you clicked | Residential | 12 | 0 | Unknown |
| PDD | Planned Development Districtthe zone you clicked | Special | 8 | 0 | Unknown |
| T4T5 | —the zone you clicked | None | 8 | 0 | Unknown |
| R-5 | Residentialthe zone you clicked | Residential | 7 | 0 | Unknown |
| T-3 | —the zone you clicked | None | 6 | 0 | Unknown |
| T-5 | Urban Centerthe zone you clicked | Mixed Use | 5 | 0 | Unknown |
| R-1 | —the zone you clicked | None | 4 | 0 | Unknown |
| R1R2 | —the zone you clicked | None | 4 | 0 | Unknown |
| R4T3 | —the zone you clicked | None | 4 | 0 | Unknown |
| T-2 | —the zone you clicked | None | 4 | 0 | Unknown |
| R4T4 | —the zone you clicked | None | 3 | 0 | Unknown |
| T-3.5 | —the zone you clicked | None | 3 | 0 | Unknown |
| CDD1 | —the zone you clicked | None | 2 | 0 | Unknown |
| NC N | —the zone you clicked | None | 2 | 0 | Unknown |
| R2T1 | —the zone you clicked | None | 2 | 0 | Unknown |
| R5T4 | —the zone you clicked | None | 2 | 0 | Unknown |
| T3T4 | —the zone you clicked | None | 2 | 0 | Unknown |
| CDD | —the zone you clicked | None | 1 | 0 | Unknown |
| M R3 | —the zone you clicked | None | 1 | 0 | Unknown |
| M T1 | —the zone you clicked | None | 1 | 0 | Unknown |
| M-1 | —the zone you clicked | None | 1 | 0 | Unknown |
| R-5 N | —the zone you clicked | None | 1 | 0 | Unknown |
| R1R3 | —the zone you clicked | None | 1 | 0 | Unknown |
| R2R3 | —the zone you clicked | None | 1 | 0 | Unknown |
| R2R4 | —the zone you clicked | None | 1 | 0 | Unknown |
| R4T | —the zone you clicked | None | 1 | 0 | Unknown |
| R4T1 | —the zone you clicked | None | 1 | 0 | Unknown |
| R5T5 | —the zone you clicked | None | 1 | 0 | Unknown |
| T-2/T-4 | —the zone you clicked | None | 1 | 0 | Unknown |
| T145 | —the zone you clicked | None | 1 | 0 | Unknown |
| T2T4 | —the zone you clicked | None | 1 | 0 | Unknown |
| T35T | —the zone you clicked | None | 1 | 0 | Unknown |
| TG | Town Green Districtthe zone you clicked | Special | 1 | 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 consolidated Town of Hamden Zoning Regulations PDF (https://www.hamden.com/DocumentCenter/View/12083), adopted 7/25/2017, effective 8/17/2017 (base form-based regulations first effective 1/1/2010), 192 pp. plus the Article IX appendix of retained pre-2010 Planned Unit Development rules. 'R5' is the unhyphenated spelling of the ordinance's R-5; Section 200 names it 'Residential R-5 Zone' and gives no further descriptive name beyond 'higher density residential development', so the label is 'Residential', consistent with how R-1 through R-4 are labeled in this index. 'R5 N' could not be traced: full-text search of the regulations (including the Article IX appendix, which preserves the older R-1..R-6 scheme) finds no 'R5 N', 'R-5 N', 'R5N' or 'R-5N' in any spelling, and the official Zoning District Map (DocumentCenter/View/12121, effective 2019) carries only plain 'R5' labels - no N-suffixed variant. It is not a documented overlay either: Hamden's overlays are APA, CAM, OSD and the Spring Glen Village District (SGVD), none abbreviated 'N', and 'NC' is the Newhall Center special district, not a suffix. The suffix looks like an artifact of the assessor's own file (it occurs alongside a matching 'R4 N'), so it is returned unmatched rather than guessed.