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Accessory Structures in Saint Paul, MN (2026)

2 verified accessory structures rules for Saint Paul, Minnesota, sourced directly from the municipal code and official government pages.

Verified from official government sources

ADU Rules

Saint Paul allows up to two accessory dwelling units per one-family home under Section 65.913, capping each unit at 800 square feet or 75 percent of the principal home's floor area, whichever is greater, and barring ADUs from ever being sold separately from the main house.

Saint Paul Accessory Dwelling Unit Standards

Some Restrictions

Saint Paul Legislative Code § 65.913(a),(d),(f) (Dwelling Unit, Accessory)

A dwelling unit that is secondary to a principal one-family dwelling, within or attached to the one-family dwelling or in a detached accessory building on the same zoning lot. Standards and conditions: (a)Number of accessory units. There must be no more than two (2) accessory dwelling units for each one-family dwelling on a zoning lot... (d)Unit size. The total floor area of each accessory unit...

Shed & Carport Rules

Saint Paul caps backyard sheds and detached garages at three non-dwelling accessory buildings per lot, totaling no more than 1,200 square feet, and requires a minimum 3-foot setback from interior lot lines under City Code Sec. 63.501.

Saint Paul Accessory Building Setback Rules

Some Restrictions

Saint Paul Zoning Code Sec. 63.501(b)(1),(3),(e) (Accessory Buildings and Uses)

Accessory buildings may be erected or established in a required rear yard and must be set back a minimum of one (1) foot from any alley right-of-way... Accessory buildings must be set back at least three (3) feet from all interior lot lines, and overhangs must be set back at least one-third (1/3) the distance of the setback of the garage wall or one (1) foot, whichever is greater... On zoning l...

Looking for Ramsey County county-wide rules?

County ordinances apply to unincorporated areas and may supplement Saint Paul city rules.

Accessory Structures in Ramsey County