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Planning board unanimously approves Mapleton Avenue height modification to allow restoration and energy upgrades

City of Boulder Planning Board · April 13, 2026
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Summary

The board unanimously approved site review LUR2024‑00028 to document a height modification and modest additions for a historic house at 1039 Mapleton Avenue, finding the project consistent with historic district guidelines; the owners plan structural repairs and high‑performance energy upgrades.

The City of Boulder Planning Board voted unanimously April 7 to approve a site review application (LUR2024‑00028) that documents a height modification for a detached dwelling at 1039 Mapleton Avenue so the owners can proceed with restoration and modest additions.

Allison Blaine, staff, explained the property sits in the Mapleton Hill Historic District and that topography and the Farmer’s Ditch change the measured low point used to calculate height. As submitted, the low point produces a measured building height of 41.9 feet; the proposed roof changes and a small north addition do not increase the existing roof ridge and the Landmarks Design Review Committee found the materials and massing compatible with district guidelines.

Architect George Watt said the owners, Charles and Sylvia Dauber, bought a house in need of structural repair and aim to restore the home while improving livability and energy performance. Watt described a modest footprint increase (about 800 square feet total added area), new dormers to create usable upper‑floor space, a replace‑in‑kind deck, a garage set back from the street, and permeable paving for the long driveway. “The owners are very interested in creating this home as a zero‑energy home,” Watt said.

One online speaker supported the restoration and energy improvements. During deliberations, commissioners noted the application was consistent with site‑review criteria, the Landmarks Design Review Committee’s findings, and neighborhood context. Claudia Hanson Thiem moved for approval adopting the staff memorandum as findings; the motion carried unanimously (7‑0).

Motion and vote: The planning board approved site review application LUR2024‑00028, adopting staff findings and subject to recommended conditions. The board’s unanimous vote clears the way for the applicant to proceed to building permit and finalize construction details.

Sources: Staff presentation (Allison Blaine), applicant presentation (George Watt), public comment, planning board roll call vote.