Connecticut commercial real estate data, county by county.

Energy and telecom siting council

Connecticut created a dedicated Siting Council in 1972, first known as the Power Facility Evaluation Council, to certify power facilities and transmission lines under the Public Utility Environmental Standards Act. In 1981 the Council's jurisdiction was expanded to hazardous waste facilities, and it has since been extended to telecommunications sites as well. The Council has specific jurisdiction over these statutorily defined facilities under Conn. Gen. Stat. Section 16-50g et seq.

• Power facilities and transmission lines
• Hazardous waste facilities added in 1981
• Telecommunications sites

Source: Connecticut Siting Council, retrieved 26 September 2026.

No county government

Connecticut abolished county government in 1960 and transferred county functions to the state. The state's 169 towns together encompass the entire area of the state, so there is no unincorporated land. The subcounty general purpose governments in Connecticut consist of both municipal (city and borough) governments and town governments, and city, borough, and town governments have similar powers and perform similar functions.

• County government abolished in 1960
• 169 towns encompass the entire state
• City, borough, and town governments have similar powers

Source: U.S. Census Bureau, retrieved 26 September 2026.

Aquifer protection land use limits

Connecticut designates Aquifer Protection Areas in sand and gravel aquifers that serve more than 1,000 people. Program responsibilities for the Aquifer Protection Area Program are shared by DEEP, the municipalities, and the water companies. The regulations restrict development of certain new land use activities that use, store, handle, or dispose of hazardous materials, and require existing regulated land uses to register and follow best management practices.

• Program responsibilities shared by DEEP, municipalities, and water companies
• Restricts certain new hazardous-materials land use activities
• Existing regulated land uses must register and follow best management practices

• Population served threshold for a protected well field, wellhead protection areas1,000

Source: Connecticut Department of Energy and Environmental Protection, Content last updated on June 22, 2026, retrieved 26 September 2026.

Enterprise zone tax abatement

Connecticut's Enterprise Zone program has grown from 6 original cities and towns in 1982 to more than 45 participating municipalities in 2021. A qualifying project that develops property in an Enterprise Zone or a zone eligible for Enterprise Zone-level benefits can receive a five-year 80% abatement of local property taxes on qualifying real estate and equipment.

• 80 percent property tax abatement for five years
• Grew from 6 municipalities in 1982 to more than 45 in 2021

• Local property tax abatement, five-year abatement80 percent

Source: Connecticut Department of Economic and Community Development, retrieved 26 September 2026.

Construction stormwater general permit

Connecticut DEEP issues a general permit for stormwater discharges from construction activities. The current permit was issued and took effect 1/1/2026 and expires 12/31/2030.

• Issued 1/1/2026
• Expires 12/31/2030

Source: Connecticut Department of Energy and Environmental Protection, retrieved 26 September 2026.

Municipal wetlands permitting layer

Each of Connecticut's 169 towns has its own inland wetlands agency. A person proposing an activity that will likely impact an inland wetland or watercourse must first obtain a permit from that municipal agency, and the state itself issues the permit for a state agency activity or for an activity conducted on state land.

• 169 separate municipal wetlands agencies
• DEEP permits a state agency activity or an activity conducted on state land

• Town wetlands agencies169

Source: Connecticut Department of Energy and Environmental Protection, Content last updated on March 10, 2020, retrieved 26 September 2026.

Coastal management program

Connecticut's Coastal Management Act sets goals and policies for coastal land use planning intended to keep coastal uses compatible with the protection of coastal resources. Long Island Sound covers 1,320 square miles and has more than 600 miles of coastline between New York and Connecticut. Connecticut's coastal zone has two tiers incorporated within 36 coastal townships.

• Coastal Management Act sets goals and policies for coastal land use planning
• 1,320 square miles of Long Island Sound
• More than 600 miles of coastline between New York and Connecticut
• Coastal zone has two tiers within 36 coastal townships

• Coastal townships36
• Long Island Sound area1,320 sq mi

Source: Connecticut Department of Energy and Environmental Protection, Content Last Updated March, 2026, retrieved 26 September 2026.

Statewide building code

Connecticut's current statewide building code is the 2022 Connecticut State Building Code, based on the International Code Council's 2021 International Codes and the ICC A117.1-2017 accessibility standard. It applies to projects with permit applications filed from October 1, 2022.

• 2022 Connecticut State Building Code
• Based on the 2021 International Codes
• Effective for permits filed from October 1, 2022

Source: Connecticut Department of Administrative Services, retrieved 26 September 2026.