Northwest Hills Planning Region, CT zoning map, flood zone and property lines by address
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Towns in Northwest Hills Planning Region: Torrington.
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 69 FIRM panels covering Northwest Hills Planning Region, the newest effective July 2013; 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 Northwest Hills 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 Northwest Hills lot shows the same lines the town assessor draws. Northwest Hills Planning Region covers about 503,451 acres of land and 13,739 acres of water.
Mapped lines are approximate. The town assessors in Northwest Hills 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 Northwest Hills Planning Region, Torrington 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 Northwest Hills 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. Northwest Hills 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 Northwest Hills 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 Northwest Hills 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 Torrington for land inside its limits.
Hazards that apply
- Wetlands and wildfire. ParcelSheet shows the National Wetlands Inventory near a Northwest Hills lot and the Forest Service wildfire hazard rating at it.
Questions
Is my house in a flood zone in Northwest Hills Planning Region?
Type the address in the box above and ParcelSheet reads FEMA's flood zone at the lot's center. FEMA has 69 flood map panels covering Northwest Hills Planning Region, the newest effective July 2013. A lender or insurer uses the official FIRM panel; FEMA's Map Service Center has it.
How do I find property lines in Northwest Hills Planning Region?
Open the Connecticut map, type the address, and the parcel outline from the town assessors in Northwest Hills 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 Northwest Hills Planning Region?
Zoning in Northwest Hills Planning Region is set by each town and city (and some boroughs) (such as Torrington), 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 Northwest Hills 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 Northwest Hills 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 Northwest Hills Planning Region?
Yes. A new or changed septic system in Northwest Hills 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 Northwest Hills Planning Region?
Zoning in Northwest Hills Planning Region is set by each town and city (and some boroughs), not the planning region (such as Torrington). 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 Northwest Hills Planning Region (2026)?
Setbacks in Northwest Hills 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 Northwest Hills Planning Region: Capitol Planning Region, Naugatuck Valley Planning Region, Western Connecticut Planning Region.
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