Overall exterior rehabilitation project approved in June 2022 (COA attached); this application includes revisions to the previously approved design.

Front door replacement: removal of c.1919 door, sidelights, and transom (previously proposed to be retained and repaired). Installation of new wood door featuring a slightly larger two-thirds light with leaded glass and two small vertical panels beneath. Installation of new sidelights, with the window panes increased in length to reflect the provided historic photo. New single-light transom with leaded glass.

East door: on the right side of the east elevation, a new secondary door was approved in place of a window opening in June 2022, featuring a single-light door flanked by sidelights and a transom to match the existing c.1919 front door and details (shown on lower drawing in application). The new application proposes to recess the door slightly, to accommodate code-required lighting, and surround the door with a scaled-down version of the molding existing on the front door. The sidelights and transom are proposed to reflect the front door as well.

Dormers: the HZC approved two new dormers on the front roof slope in June 2022. The application requests to reduce them in size and proportion, approximately 12" smaller in height and width than initially proposed, and clad in lap siding instead of the initially-proposed slate shingles.

The application also notes that the previously approved "maintenance mezzanine" (ie the rooftop deck and railing) will not be installed, and the carriage house will not be constructed.

DETAILS OF HZC MOTION FOR 3/21/24 MEETING: APPROVE the east elevation door modifications; APPROVE the front dormer modifications; DENY front door replacement, approve preservation of the c.1919 door, transom, and sidelights.

See attached design guideline document for Knollwood Individual H Landmark.

1. A property will be used as it was historically or be given a new use that requires minimal change to its distinctive materials, features, spaces and spatial relationships.
2. The historic character of a property will be retained and preserved. The removal of distinctive materials or alteration of features, spaces and spatial relationships that characterize a property will be avoided.
3. Each property will be recognized as a physical record of its time, place and use. Changes that create a false sense of historical development, such as adding conjectural features or elements from other historic properties, will not be undertaken.
4. Changes to a property that have acquired historic significance in their own right will be retained and preserved.
5. Distinctive materials, features, finishes and construction techniques or examples of craftsmanship thatcharacterize a property will be preserved.
6. Deteriorated historic features will be repaired rather than replaced. Where the severity of deterioration requires replacement of a distinctive feature, the new feature will match the old in design, color, texture and, where possible, materials. Replacement of missing features will be substantiated by documentary and physical evidence.
7. Chemical or physical treatments, if appropriate, will be undertaken using the gentlest means possible. Treatments that cause damage to historic materials will not be used.
9. New additions, exterior alterations or related new construction will not destroy historic materials, features and spatial relationships that characterize the property. The new work will be differentiated from the old and will be compatible with the historic materials, features, size, scale and proportion, and massing to protect the integrity of the property and its environment.
10. New additions and adjacent or related new construction will be undertaken in such a manner that, if removed in the future, the essential form and integrity of the historic property and its environment would be unimpaired.