Accessory Structures in Medford, OR (2026)
4 verified accessory structures rules for Medford, Oregon, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Medford allows one ADU per single-family, duplex or townhouse lot, capped at 900 square feet or 75 percent of the primary home's floor area, whichever is smaller. ADUs get a 10 percent lot-coverage bonus and are exempt from the parking table entirely.
Medford Accessory Dwelling Unit Zoning Rules
Some RestrictionsMedford Land Development Code § 10.821(2)
The maximum gross floor area (GFA) of the ADU shall not exceed 75 percent of the GFA of the primary dwelling, or 900 square feet, whichever is less... Lot coverage, as determined by the subjects parcel's zoning may be exceeded by up to 10%. The additional coverage allowance is exclusively for the ADU and shall not be used for any other structures... No additional parking shall be required for a...
ADU Impact Fees
Medford cuts a homeowner's Street System Development Charge in half for an accessory dwelling unit of 900 square feet or smaller. The exemption is optional, application-based, and runs only through June 30, 2027.
Medford: 50% Street SDC Exemption for Small ADUs
Light RestrictionsMedford Municipal Code § 3.817(3)
At the option of the property owner, accessory dwelling units (ADU) of 900 square feet and smaller, as defined in Section 10.012, are exempt from 50 percent of the SSDC for exemption applications filed during the period of time beginning December 1, 2020, and ending on June 30, 2027. The exemption authorized by this section is subject to the following: (a) Persons seeking the exemption shall su...
ADU Rental Restrictions
An ADU that gets Medford's 50% Street SDC exemption cannot be rented short-term for 10 years afterward. The restriction is recorded against the property and enforced through an annual questionnaire.
Medford: 10-Year Short-Term Rental Ban on Fee-Exempt ADUs
Significant RestrictionsMedford Municipal Code § 3.817(3)(b), (3)(d)
An ADU receiving an exemption may not be used as a short-term rental for a period of 10 years following approval of the application for exemption of SSDCs permitted under this section. A restrictive covenant and compliance agreement documenting this restriction, in a form approved by the City, shall be recorded with Jackson County, at applicant's expense, and submitted to the City prior to issu...
Garage Conversions
Medford values a garage conversion to habitable space at 50 percent of the "R-3 Residential" rate on the ICC Building Valuation Data table when calculating the building permit fee. Section 9.270(3)(a) sets that reduced valuation alongside carports, decks, and covered porches, but a permit is still required.
Medford Garage Conversion Permit Valuation
Some RestrictionsMedford Code § 9.270(3)(a)
Residential and commercial valuation of construction shall be calculated by using the Building Valuation Data table published in April by the International Code Council (ICC), and multiplied by the square footage of the structure... (a) One- and two-family dwelling carports, decks, covered porches, covered patios, and garage conversions to habitable space shall be 50 percent of the valuation fo...