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Commission discusses window standards, 'no effect' certificates and administrative review
Summary
Commissioners debated when window replacements can be approved administratively under a certificate of no effect and when a certificate of appropriateness is required; staff said fiberglass window options can be approved administratively in some cases and that they will recirculate their window white paper.
Commissioners spent significant time reviewing how the commission interprets certificates of no effect and certificates of appropriateness for window replacements in historic properties.
A project at 603 West Birch seeking a certificate of no effect to repair a chimney and address condensation/damaged windows prompted questions about proposed replacement materials and visual impact. Staff said the applicant initially proposed Andersen 100 series (Fibrex) but the commission’s technical review found Fibrex inappropriate for the bungalow-style structure; staff recommended Pella Impervia or an equivalent and explained that the change could be administratively approved as a certificate of no effect when the replacement is consistent with the Secretary of the Interior guidance and does not have an adverse effect.
Commissioners asked why substantial visual changes could be treated as 'no effect' rather than requiring a certificate of appropriateness. Staff explained the difference between 'measure of change' and 'measure of effect' and emphasized that the standard is whether there is an adverse effect to the property. Staff offered to recirculate the previously approved window white paper and to forward no-effect certificates to the commission for confirmation when staff is in doubt.
The discussion clarified that certificates of appropriateness must come before the commission but that many compatible replacements that meet technical guidance can be processed administratively to avoid delays and excessive project costs for owners.
Staff said they will send the commission the window white paper and explained that windows are often issued as over-the-counter permits, while commission review can take weeks and delay urgent repairs.
