Naugatuck Valley Planning Region, CT zoning map, flood zone and property lines by address
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Towns in Naugatuck Valley Planning Region: Plymouth, Waterbury.
Flood zone by address
ParcelSheet reads FEMA's National Flood Hazard Layer at the lot: the zone, whether it is a high risk area where lenders ask for flood insurance, and the base flood elevation where FEMA lists one. FEMA has 135 FIRM panels covering Naugatuck Valley Planning Region, the newest effective May 2017; no coastal V zones are mapped in it.
The official panel and any Letter of Map Amendment are at FEMA's Map Service Center. An elevation certificate for a Naugatuck Valley house comes from a licensed surveyor and is often on file with the planning region or city building office.
Property lines
The parcel outline, parcel number and mapped size come from the Connecticut CAMA and Parcel Layer (2025), from town assessors, published as open data, so a Naugatuck Valley lot shows the same lines the town assessor draws. Naugatuck Valley Planning Region covers about 264,182 acres of land and 5,621 acres of water.
Mapped lines are approximate. The town assessors in Naugatuck Valley Planning Region keep the parcel record (Connecticut OPM list of town assessors); a licensed surveyor sets the true corners.
Zoning
In Connecticut zoning is set by each town and city (and some boroughs), not by the planning region: in Naugatuck Valley Planning Region, Waterbury zones the land inside its limits. ParcelSheet shows the use code on the lot's parcel record and the municipality it sits in; the town zoning office has the district, the uses it allows and the lot size it needs. The State list lists the planning region's municipalities.
ADU and guest houses
Under Connecticut's zoning law (Connecticut General Statutes Chapter 124), each town and city (and some boroughs) can allow an accessory dwelling unit on a lot with a house. Whether a Naugatuck Valley lot can add one depends on its district; the town zoning office has the rule. ParcelSheet shows the mapped lot size and the ground's slope, the first two things the question turns on.
Septic and soil
ParcelSheet reads the USDA soil survey at the lot: the soil's name, its septic absorption rating and whether it is prime farmland. Naugatuck Valley Planning Region is soil survey area CT601, State of Connecticut, Western Part, last updated September 2026, on Web Soil Survey.
A new or changed septic system in Naugatuck Valley Planning Region needs a permit from the town or district health department (the local director of health, under the Connecticut Department of Public Health).
Setbacks
Setbacks in Naugatuck Valley Planning Region come from the zoning district: the front, side and rear distances a house must keep. ParcelSheet does not draw setback lines; the town zoning office gives them for the lot's district, and Waterbury for land inside its limits.
Hazards that apply
- Wetlands and wildfire. ParcelSheet shows the National Wetlands Inventory near a Naugatuck Valley lot and the Forest Service wildfire hazard rating at it.
Questions
Is my house in a flood zone in Naugatuck Valley Planning Region?
Type the address in the box above and ParcelSheet reads FEMA's flood zone at the lot's center. FEMA has 135 flood map panels covering Naugatuck Valley Planning Region, the newest effective May 2017. A lender or insurer uses the official FIRM panel; FEMA's Map Service Center has it.
How do I find property lines in Naugatuck Valley Planning Region?
Open the Connecticut map, type the address, and the parcel outline from the town assessors in Naugatuck Valley Planning Region shows on the map with its parcel number and mapped size. Mapped lines are approximate; only a licensed surveyor sets the true corners.
What is my property zoned in Naugatuck Valley Planning Region?
Zoning in Naugatuck Valley Planning Region is set by each town and city (and some boroughs) (such as Waterbury), not by the planning region. ParcelSheet shows the use code on the parcel record and names the municipality; the town zoning office has the final word.
Can I build an ADU in Naugatuck Valley Planning Region?
Under Connecticut's zoning law (Connecticut General Statutes Chapter 124), each town and city (and some boroughs) can allow an accessory dwelling unit, and each sets its own rules. In Naugatuck Valley Planning Region ask the town zoning office for the lot's district first; ParcelSheet shows the lot size as mapped so you can see the room you have.
Do I need a septic permit in Naugatuck Valley Planning Region?
Yes. A new or changed septic system in Naugatuck Valley Planning Region needs a permit from the town or district health department (the local director of health, under the Connecticut Department of Public Health). ParcelSheet shows the USDA soil survey's septic rating at the lot, from survey area CT601 (State of Connecticut, Western Part).
What can I build on 5 acres in Naugatuck Valley Planning Region?
Zoning in Naugatuck Valley Planning Region is set by each town and city (and some boroughs), not the planning region (such as Waterbury). The zoning district decides the uses, how many homes and the smallest lot it allows on 5 acres. ParcelSheet shows the lot size as mapped and the use code on the parcel record; the town zoning office has the district and its rules. See the Connecticut OPM list of town assessors.
What are the residential setbacks in Naugatuck Valley Planning Region (2026)?
Setbacks in Naugatuck Valley Planning Region come from the zoning code of the municipality the lot sits in: the front, side and rear distances depend on the lot's district. ParcelSheet does not draw setback lines or give a number it did not read; the town zoning office gives them for the district. See the Connecticut OPM list of town assessors.
Next to Naugatuck Valley Planning Region: Capitol Planning Region, Greater Bridgeport Planning Region, Northwest Hills Planning Region, South Central Connecticut Planning Region, Western Connecticut Planning Region.
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