While Connecticut state law requires all towns and cities to allow accessory dwelling units (ADUs) either by right or by special permit, individual towns and cities have the ability to create their own regulations and restrictions related to ADUs. As a result, some towns may not allow ADUs or may impose stricter regulations on them.

There are a variety of reasons why a town may not allow ADUs. One common concern is related to the potential impact on the character of a neighborhood or community. Some residents may worry that the addition of an ADU will change the nature of their community or that it will have a negative impact on property values. Other concerns may be related to traffic, parking, or overcrowding.

In addition, some towns may not have updated their zoning regulations to reflect the changes in state law that require ADUs to be allowed. Others may not have the resources to adequately review and process applications for ADUs, which can be time-consuming and require expertise in zoning and building regulations.

It's important to note that ADUs can be an effective way to address the affordable housing crisis and provide more flexible housing options for homeowners and renters. However, each town and city must balance the potential benefits of ADUs with the concerns and challenges that come with implementing them.

Connecticut state law requires that all towns and cities in the state allow Accessory Dwelling Units (ADUs) by right or by special permit. However, individual towns and cities can impose their own regulations and guidelines for ADUs. Here is a list of some Connecticut towns and cities that allow ADUs:

  1. Avon
  2. Bethany
  3. Bethel
  4. Bloomfield
  5. Bolton
  6. Branford
  7. Bristol
  8. Brookfield
  9. Canton
  10. Chaplin
  11. Chester
  12. Clinton
  13. Colchester
  14. Coventry
  15. Cromwell
  16. Danbury
  17. Durham
  18. East Haddam
  19. East Hampton
  20. East Windsor
  21. Ellington
  22. Essex
  23. Farmington
  24. Franklin
  25. Glastonbury
  26. Granby
  27. Groton
  28. Guilford
  29. Haddam
  30. Hamden
  31. Hartford
  32. Hebron
  33. Killingworth
  34. Lebanon
  35. Ledyard
  36. Madison
  37. Manchester
  38. Mansfield
  39. Marlborough
  40. Meriden
  41. Middlebury
  42. Middletown
  43. Milford
  44. Monroe
  45. Montville
  46. Naugatuck
  47. New Canaan
  48. New Fairfield
  49. New Hartford
  50. New London
  51. New Milford
  52. Newington
  53. Newtown
  54. North Branford
  55. North Haven
  56. Norwalk
  57. Old Lyme
  58. Old Saybrook
  59. Orange
  60. Oxford
  61. Plainfield
  62. Plainville
  63. Plymouth
  64. Pomfret
  65. Portland
  66. Prospect
  67. Putnam
  68. Redding
  69. Ridgefield
  70. Rocky Hill
  71. Salem
  72. Scotland
  73. Seymour
  74. Shelton
  75. Somers
  76. South Windsor
  77. Sprague
  78. Stafford
  79. Stamford
  80. Sterling
  81. Stonington
  82. Suffield
  83. Thomaston
  84. Tolland
  85. Trumbull
  86. Union
  87. Vernon
  88. Voluntown
  89. Wallingford
  90. Waterbury
  91. Waterford
  92. West Hartford
  93. Westbrook
  94. Weston
  95. Westport
  96. Willington
  97. Wilton
  98. Windsor
  99. Windsor Locks
  100. Wolcott
  101. Woodbridge

This list is not exhaustive, and towns and cities may update their regulations and guidelines at any time. Homeowners who are interested in building an ADU in Connecticut should check with their local zoning department to confirm that ADUs are allowed and to learn about any specific requirements or guidelines.

Posted by Tim Bray on


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