Level II: Knollwood Individual H Landmark
6-B-22-HZ
Approved With Conditions
Recommendation
Staff recommends approval of Certificate 6-B-22-HZ; providing for Commission discussion and any additional conditions regarding: the proposed shutter design, the design of the proposed new side elevation door, and the proposed roofline balustrade; AND subject to the following conditions:1) Omission of the proposed front dormers;
2) All brick masonry repair and paint removal to meet standards of NPS Preservation Brief 2;
3) Meeting all relevant standards of the City zoning code for off-street parking and landscaping;
4) Final site plan to meet City Engineering standards, with minor revisions to be approved by staff
5) and providing final details on carriage house windows and doors to staff for approval.
Applicant Request
Accessory structure; Architectural feature; Doors; Guttering; Masonry repair/painting; Paving; Porch; Roofing; Shutters; Siding; Storm windows or doors; Windows- Comprehensive exterior rehabilitation, new secondary structure, and modifications to site design.
- Repair scopes include:
- Repair and restoration of existing double-hung, one-over-one windows. Window repair to meet Secretary of the Interiors Standards for window repair. Installation of new pre-finished aluminum storm windows, custom built to fit existing openings, with meeting rails to align with meeting rails of existing windows.
- Repair to existing wood lintels, sills, and decorative medallions, including replacement in-kind to those elements which are deteriorated.
- Removal of non-original wood louvered shutters on the façade (south elevation) and installation of new shutters. See application packet for materials and design of shutters and shutter dogs; applicant proposes custom-made, smooth-finished, V-groove panel shutters with a decorative cut-out (applicant notes the cut-out is optional) made of Boral composite material, featuring simple shutter dogs appropriate for era of house.
- Removal of asphalt shingle roof and installation of new slate roof with copper flashing, new copper half-round gutters, and downspouts. Due to weight of slate roofing materials, roof repair will also require reconstruction of the roof with a structural steel frame. Original roofline will be maintained.
- Repair to existing dentiled wood cornice.
- Repair and repointing to any compromised mortar joints. Masonry restoration will also include removal of salmon-colored paint/stain on exterior brick through dry ice blasting.
- Repair to wood front door, transom, and sidelights.
- Repair as needed to front porch columns. Column work also includes raising the column torus (decorative raised base) to add 2" to existing concrete base, to accommodate new Tennessee marble terrace.
- Brick chimneys to be repointed or rebuilt from the roofline up, pending conditions assessment. Salvageable original brick will be saved and reused to reconstruct the chimneys. The reconstructed chimneys will reuse the first line of existing corbelling and add three courses of simple brick corbels to the top.
- New copper chimney flue caps (see two options in page 9 of application packet - louvered, flat copper chimney caps or half-barrel chimney caps).
- Repair and restoration of existing double-hung, one-over-one windows. Window repair to meet Secretary of the Interiors Standards for window repair. Installation of new pre-finished aluminum storm windows, custom built to fit existing openings, with meeting rails to align with meeting rails of existing windows.
- New elements on primary structure include:
- Installation of one new window on first story, right (east) elevation, towards rear. New window will be vertically and horizontally aligned with existing windows, and feature a design, materials, and dimensions to match the existing (including wood lintel and sill).- Installation of new entry on right side (east) elevation (currently a window). Half-light door will feature a header aligned with the adjacent sunroom headers, a transom, and sidelights.
- Reconstruction/opening of east (right side) sunroom. Sunroom was originally an open air porch and enclosed with wood single-light windows and lap siding. Concrete plank flooring, round wood columns, and roof joists are deteriorating and declared unstable by a structural engineer. Porch will be reconstructed with matching footprint and new roofline, roof details, columns, and balustrade to match the existing.
- Modification to sunroom on right side (east) and rear (north) elevation. Sunroom was enclosed with glass storefronts and wood lap siding; non-historic glass and wall enclosures will be replaced with paired French doors alternating with sidelights and transom windows. Original posts, decorative brackets, and roofline will be retained and repaired.
- Installation of new balustrade on flat-roof section of primary roofline. "Maintenance mezzanine" will be created with Trex decking and a simple 48" tall black iron railing.
- Two new dormers on the façade roof slope. Dormers would flank the front portico and match the existing c.1851 dormers on the east and west roof slopes in design, window proportions, and materials.
- North (rear) second-story balcony to receive a new exterior door, with new balustrade to match existing original balusters elsewhere on the house. New Trex decking on balcony.
- Replacement of rotted wood louvered vent on west elevation dormer with a copper louvered vent to match existing in dimensions, placement, and design.
- Replacement of low-slope TPO roof on north sunporch with a copper roof.
- New exterior light fixtures (see specifications in application packet).
- Installation of new entry on right side (east) elevation (currently a window). Half-light door will feature a header aligned with the adjacent sunroom headers, a transom, and sidelights.
- New secondary structure (carriage house):
- New carriage house to be located in the northeast corner of the property. Carriage house will feature a primary hipped-roof massing, with two smaller hipped-roof massings projecting to the sides. Carraige house will be clad in a brick complimentary to main house, featuring one-over-one windows and trim details compatible with the primary house. Carriage house project also features a security gate for vehicular entrance and small hipped-roof gatehouse structure.
- Site work includes: new landscaping and garden areas, new Tennesee marble steps accessing the porte cochere area, and a new Tennessee pink marble terrace on the façade elevation. New ramps for accessibility. New masonry "grotto" structure near east site stairs, integrated with existing and new hardscaping. See landscape drawing (sheet 1) for new site design, parking area, and landscaping elements.
- CONDITIONS APPROVAL PER 6.21.22 HZC MEETING:
1) All brick masonry repair and paint removal to meet standards of NPS Preservation Brief 2;
2) Meeting all relevant standards of the City zoning code for off-street parking and landscaping;
3) Final site plan to meet City Engineering standards, with minor revisions to be approved by staff
4) and providing final details on carriage house windows and doors to staff for approval.
Knollwood Individual H Landmark
- Style: Neoclassical, c.1851 with modifications dating to 1890s and 1930s
- See attached designation report and design guidelines for architectural description of house.
- Style: Neoclassical, c.1851 with modifications dating to 1890s and 1930s
Applicable Guidelines
Secretary of the Interior's Standards for Rehabilitating Historic Buildings.
See Guidelines- 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 that characterize 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.
Meeting Date
June 16, 2022
COA Expires June 22, 2025
Knollwood Individual H Landmark
150 Major Reynolds Place 37919
Applicant
Brian Pittman - Johnson Architecture, Inc
Owner Knollwood Historic Preservation, LLC
