Staff propose 29 changes to Arlington Unified Development Code including short‑term rental caps and drainage attestations

Richard Gertzen, assistant director of planning and development services, presented the city’s annual update to the Unified Development Code, describing 29 proposed changes intended to clarify language, correct errors and update substantive requirements based on recent practice and state law.

Gertzen said the package contains 24 clarifications or corrections, two new or modified definitions and nine substantive changes. Staff emphasized the proposals do not alter primary or accessory uses this year but do add or clarify standards in many technical areas, including setbacks, landscaping, drainage, front-yard fencing and the treatment of external equipment.

Key substantive proposals highlighted by staff include limits on short-term rental (STR) permits in multifamily buildings: inside the entertainment-area STR zone, no more than 25 dwelling units or 15% of a building’s units (whichever is greater) could be permitted as STRs; outside that zone the cap would be 25 dwelling units or 15% of units (whichever is less). The intent, Gertzen said, is to prevent an entire apartment building from converting to short-term rentals while allowing a modest number of permitted units.

Other proposed changes include: clarifying that telecommunication towers are allowed in residential districts by specific-use permit; adding accessory-structure height and setback references so very tall private garages must meet supplemental standards; including the VG low-density residential district among those eligible for a 5-foot front setback reduction for J-swing garages; correcting a double-frontage-lot setback error so major thoroughfares retain a 20-foot setback; expanding front-yard fencing options to allow vinyl or composite picket fences up to 3 feet with 50% visibility while retaining 4-foot metal rail options; measuring garage width by the actual door opening (and allowing a single two‑car door where appropriate); and prohibiting window‑mounted air conditioners on townhomes and requiring screening of exterior equipment in public view.

Gertzen also proposed administrative and process changes: compiling technical platting standards on the planning website so common plat comments can be tied to code; aligning post‑development and post‑construction drainage attestations with current practice and requiring contemporaneous recording of maintenance agreements where needed; updating plat-extension language to reflect recent state law that removed limits on the number of extensions; and allowing staff administrative approval of plats in narrow circumstances when the Planning and Zoning Commission cannot meet and the 30‑day statutory review clock would otherwise expire.

On historic preservation, staff proposed joining the certificate of appropriateness hearing with the demolition/relocation permit hearing for structures more than 50 years old so the two processes run on the same 45‑day timetable. Staff said the proposed changes codify practices already in use (for example, drainage attestations) and aim to reduce conflicting interpretations.

Gertzen said staff solicited input from the Municipal Planning Commission, the Planning & Zoning work session, Arbor and a development roundtable. He said the item will go to the Planning and Zoning Commission public hearing next month followed by first and second readings at council, with a target effective date of July 1 if adopted.

Council Member Bridal thanked staff for the work and said she supported the package, describing the certificate-of-appropriateness/demolition alignment as particularly helpful. "I think these are all great changes and I can't wait to see what the PNC says," she said.

Gertzen asked councilors for feedback on a separate proposal to allow the city’s Alternate Equivalent Compliance (AEC) procedure to grant up to a 15% setback modification for residential lots smaller than one acre; he said staff would welcome direction on whether a 15% limit is appropriate for small-infill lots.

No formal vote was taken at the meeting; staff sought direction and scheduled the item for the next public hearing.