ADU Zoning in Norwalk, Connecticut
What Norwalk allows for accessory dwelling units — permitted zones, size limits, parking, rental rules and utilities. Boxx ADUs designs and builds ADUs in Norwalk and across Fairfield County. Call us to talk through your property, or send us a message.
Which zones allow ADUs?
All zones for single-family dwellings.
What types of ADUs are allowed?
Attached, Detached, or Converted ADUs
What are the size/floor area requirements?
Detached accessory dwelling units shall not exceed 700 square feet in floor area.
Attached accessory dwelling units shall not exceed 1,000 square feet in floor area.
What is the max height?
15 feet when located 20 feet or less from a side or rear property line;
20 feet when located more than 20 feet from a side and rear property line.
How many parking spaces?
Norwalk requires one parking space for the ADU. If you plan to add an ADU to a Norwalk property, plan to accommodate three parking spaces within the boundary of your property.
What are the rental requirements?
Owner-occupancy is required and the tenant has a minimum six-month rental agreement.
What about utilities, sewer or septic?
Utilities and sewer tie into the main house. Septic is job-specific.
Summarized for convenience and current as of publication. Local regulations change — confirm details with the town before relying on them.