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B 57-38

AN ACT TO ADD A NEW SUBARTICLE 3 AND A NEW § 61103(mm) OF ARTICLE 1; AND AMEND §§ 61304(a)(4), 61305(a)(4), AND 61306(a) OF ARTICLE 3, ALL OF CHAPTER 61, TITLE 21, GUAM CODE ANNOTATED, RELATIVE TO AUTHORIZING THE CONSTRUCTION OF ACCESSORY DWELLING UNITS (ADUs) IN RESIDENTIAL ZONES TO STRENGTHEN HOUSING OPTIONS ON GUAM

38th Guam Legislature

Bill authorizes accessory dwelling units on single-family residential lots in Guam to expand housing supply and affordability through zoning code amendments.

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Bill Summary · B 57-38

Legislative bill overview

This bill authorizes the construction of accessory dwelling units (ADUs)—smaller, secondary residential units on single-family residential lots—in Guam's residential zones. It amends zoning regulations to permit ADUs as a housing option and adds new provisions to Chapter 61 of Guam's building code to establish standards and requirements for their development.

Why is this important

Guam faces documented housing shortages and affordability challenges. ADUs can increase the housing supply without requiring new land development, providing homeowners rental income opportunities while offering more affordable housing options for residents. This represents a significant shift in local zoning policy toward density and housing diversity.

Potential points of contention

  • Property value and neighborhood character concerns: Neighbors may worry that ADUs will alter neighborhood aesthetics, increase traffic/parking demands, or negatively impact property values, despite evidence suggesting ADUs have minimal negative effects
  • Enforcement and code compliance: Unclear oversight mechanisms for ensuring ADUs meet building standards, utility capacity, and parking requirements, particularly in areas with limited infrastructure
  • Owner-occupancy and speculation: The bill's language on whether ADUs can be investor-owned versus owner-occupied units is critical—overly permissive rules could enable speculation rather than affordability, while restrictions may limit effectiveness

Compiled from official sources — confirm details with the bill’s official record.

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