General Contractor in Sandy, Utah

Sandy's internal ADU guide, which cites Sandy City Code 21-11-1, lists conditions that include these.

• An administrative special use permit and an accessory apartment business license, issued together by the Community Development Department
• No accessory apartment in a home owned by an LLC, corporation, or partnership
• The owner living in the home as a primary residence while the apartment is rented
• One accessory apartment per home, inside the home itself, and never a detached unit or a mobile home
• A separate building permit for any construction, with the work held to the design standards of Section 21-11-1(b), among them entrance placement, exterior appearance matching the home, parking, and septic verification for a home not on sewer
• One additional single family in the apartment, with no subleasing
• A minimum rental term of 30 consecutive days
• The home's address and utility meters shared with the apartment, with no separate address, mailbox, or utility accounts
• Off-street parking available for the apartment occupants
• A permit that lasts until the home is sold, the owner moves out as the primary occupant, or the business license expires, and that does not transfer to a new owner
• The business license renewed each year, with the special use permit granted once

Utah's ADU statutes apply in Sandy as well, as our ADU page explains.

Source: Sandy, Internal ADU Guide. We check the current version of the guide with the city before an accessory apartment is designed.