Planning board hears site‑review proposal for three R&D buildings at 1855 South Flatiron Court; board continues decision to Feb. 4

Developers and design consultants presented Jan. 21 to the Boulder Planning Board a site‑review application for a three‑building research and development campus at 1855 South Flatiron Court. The project would redevelop a 9.87‑acre property with three three‑story buildings and associated sitework, approximately 207,011 square feet of building area in total. The applicant requested two height modifications (buildings in flood‑plain areas) and a 23% parking reduction (398 spaces proposed where 519 are required by standard code calculations). The applicant also requested an extension of the standard three‑year vested‑rights period to nine years and a phased construction plan.

Why it matters: The site sits inside the Flatirons Business Park and the East Boulder sub‑community plan’s “destination workplace” place type, which anticipates employment‑focused uses but also encourages multimodal access, ground‑floor activation and connections to the Flatiron Greenway. The project raises questions about long‑term vesting, how parking reductions match future occupancy and how roof‑line and facade treatments can reduce the perceived bulk of floor‑plate‑heavy R&D buildings.

Staff summary and findings: Planning staff (Allison Blaine) told the board that the proposal meets the site‑review threshold and noted the project’s responsiveness to the East Boulder subcommunity plan’s place‑type goals: a ground‑floor commercial/café area and a planned multiuse‑path connection to South Boulder Creek. Staff recommended approval subject to conditions and flagged areas for additional technical work including wetland permitting (parts of the site adjoin a high‑hazard floodway and contain wetland buffers), additional design detail related to roofline variation and a requirement to finalize certain technical documents at time of tech‑doc review.

Applicant presentation: Biomed Realty (Salil Payapoli) and Perkins and Will (design team) presented the site plan and building designs. The proposed site layout places much of the parking at grade along the site perimeter and locates a landscaped, pedestrian‑oriented central courtyard — called “the commons” — and a system of paths and programmed open spaces (the “glade” and the “ramble”). The applicant described design moves intended to reduce perceived mass (lantern‑like corner elements, trellises and glazing, vertically modulated facades) and said portions of the buildings in the floodplain are elevated to meet regulatory and resilience requirements.

Technical details presented: the applicant’s materials list identifies stone, metal panel and glazing as principal materials; the plan includes about 30% usable open space on site (staff noted an overall open‑space percentage that includes portions of the outer wetland buffer); the applicant proposed 66 electric‑vehicle spaces and a mix of short‑ and long‑term bicycle parking, and said the design includes a bicycle maintenance/charging area and an e‑bike station linking the campus to the multiuse trail. The applicant explained that the parking reduction is supported by a TDM package that includes transit pass subsidies, car‑share space(s) and other employer‑based measures, and that the R&D/lab‑type tenants typically have lower parking demand per square foot than traditional office uses.

Board action: Planning Board did not take a final vote. After staff presentation and the applicant’s remarks, the board heard brief public comment (one online speaker) and then debated technical items. Several board members asked for additional details on the roof‑line modulation and on the calculation and placement of bike parking and long‑term charging for e‑bikes. Multiple board members also asked staff and the applicant to clarify the permit pathway and consequences of a multi‑phase, nine‑year vesting request; city counsel explained the statutory basis for extended vesting is discretionary and that council must approve any extension beyond three years. For timing and thoroughness, the board voted unanimously to continue the hearing to the Feb. 4 Planning Board meeting to allow the applicant to return with additional clarifications and refinements.

What’s next: Planning staff will work with the applicant on the specified clarifications (roof‑line and perceived massing details, wetland/conditional permit coordination, a breakdown of bike parking types and charging capacity, and clearer phasing/TDM commitments tied to each building). Council will separately consider an ordinance if the applicant’s requested nine‑year vesting period remains part of the application. Planning Board will reconvene on Feb. 4 for final deliberation and possible decision.