Is it permissible to add an apartment in a single-family home?

Zoning Code Section 12.14: Accessory Apartment

Intent: To fulfill an increasing need for smaller, more affordable housing units in owner occupied, single-family homes while preserving the quality of Middletown's housing stock character of its neighborhoods.


Definition and Applicability: An accessory apartment is herein defined as a second dwelling unit within or attached to a single-family residence. An accessory apartment will be allowed as a permitted use in all areas zoned for single-family homes.


The accessory apartment will be approved only if the applicant has demonstrated that the proposed unit meets the following standards:

  • The principal unit and the accessory apartment shall remain under common and ownership and shall be owner occupied at all times
  • The accessory apartment shall be within or attached to the single-family residence with a common wall of at least 8 feet in width
  • The accessory apartment shall not alter the basic character of the building as a single-family dwelling
  • The accessory apartment must connect to the primary unit via an interior doorway. Additional front entrances are prohibited
  • The accessory apartment must use existing unit's utilities and meters
  • One driveway shall service both dwelling units. Off-street parking for both units must be provided with 3 spaces for the principal dwelling unit and 1 space for the accessory apartment
  • The accessory apartment shall include its own kitchen, three-fixture bath and one bathroom
  • The floor area of the apartment must be at least 425 square feet and cannot exceed 800 square feet and 33% of the floor area of the existing home
  • The apartment shall comply with the Middletown Housing Code and all other applicable codes and ordinances
  • The accessory apartment cannot be converted from a garage or other auxiliary building
  • The home and apartment shall have only 1 street number


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14. What kind of permits are needed for different building projects?
15. Is it permissible to add an apartment in a single-family home?