Historic Zoning Commission
Mechanicsville H: Level III
3-C-25-HZ
Staff Recommendation
Staff recommends approval of Certificate 3-C-25-HZ, subject to the following conditions:
1) application to receive variances from BZA at the March meeting and meeting relevant standards of City Zoning code, including Article 4.6 for Middle Housing standards;
2) front setback to be recessed towards rear property line to align with blockface, with final approval by staff;
3) CMU foundation to be clad in stucco, parge-coated or clad in brick veneer;
4) front porch to be extended to 8' deep, and feature wood tongue-and groove flooring and a wood beadboard ceiling;
5) slider windows to be revised to double-hung windows, with final specifications submitted to staff for approval;
6) front door specifications to be submitted to staff for approval;
7) Commission and neighborhood to discuss and approve final exterior siding material.
Location Knoxville
216 Cansler Ave. 37921
OwnerR. Bentley Marlow, 216 Cansler LLC
Applicant Request
New primary structure fronting Cansler Avenue. The one-story duplex measures 17' wide by 78' deep, with the second unit behind the first. The main massing is proposed to be set 10' from the front property line. There is no parking indicated on the site plan.
The duplex features a 12/12 pitch front-gable roof clad with architectural asphalt shingles, and the roofline features 1' eave overhangs and faux rafter tails on the side elevations. The front-gable fields are clad in faux cedar shakes and feature a 16" square decorative vent and an architectural bracket at the apex. The façade features a full-length, 5' deep front porch recessed under a 6/12 pitch half-hipped roof and is supported by three 6x6 pressure treated wood posts. The porch does not feature any railings, and the steps will be made of concrete. There is a similar porch on the rear elevation that is 8' deep, with a taller roof.
The building will be clad in composite wood ("Hardie or similar") lap siding with wooden corner boards and trim, and it will rest on a 2'-6" tall painted concrete block foundation. The façade features tripled 1/1 single hung windows on the right and with a paneled door on the left, which is the only entrance to the front unit. The left elevation features eight horizontal sliding windows, two 1/1 single hung windows, and a 9'-3" wide massing that projects 1' from the body of the house. The right elevation features four horizontal sliding windows and the primary entrance to the rear unit, which is recessed 3' into the main massing and has a 4' wide concrete stoop. The rear elevation features two adjacent paneled doors, which are secondary entrances for the rear unit and are recessed under the porch. All windows and doors feature 1x4 wooden trim, and all windows feature projecting sills. No window material is specified.
Staff Comments
N/A
A. Rules for Roofs
1. The shape of replacement roofs or roofs on new construction shall imitate the shapes of roofs on neighboring existing houses or other houses of the same architectural style. Roof pitch must duplicate the 12/12 pitch most often found in the neighborhood, the roof pitch typical of the style being referenced by a new building, or the pitch of neighboring buildings. Roof shapes must be complex, using a combination of hips with gables, dormers, or where appropriate to the style, turrets, or other features that emphasize the importance of Victorian-era or Craftsman styling.
2. The eaves on additions or new buildings must have an overhang that mimics existing buildings near the property. A minimum eave overhang of at least eight inches must be retained or used on new buildings or additions to existing buildings.
3. Repair or replace roof details (chimneys, roof cresting, finials, attic vent windows, molding, bargeboards, and other unique roof features). Use some of these details in designing new buildings.
C. Rules for Porches
2. Design elements to be incorporated in any new porch design must include tongue and groove wood floors, beadboard ceilings, wood posts and/or columns, and sawn and turned wood trim when appropriate. If balustrades are required, they must be designed with spindles set into the top and bottom rails.
3. In new construction, the proportion of the porches to the front facades must be consistent with the historic porches in the neighborhood.
D. Rules for Entrances
4. A new entrance or porch must be compatible in size, scale, or material.
6. Secondary entrances must be compatible with the original in size, scale, and materials, but clearly secondary in importance.
E. Rules for Wood Wall Coverings
1. Synthetic siding is inappropriate and is not allowed either as replacement siding on existing buildings or new siding in new construction.
4. New construction must incorporate corner and trim boards and appropriate door and window trim to be compatible with the adjacent historic buildings.
12. Concrete siding (also called Hardi-board) is allowed on outbuildings and garages for new construction only. The material can be used like board and batten if placed vertically. Batten strips of wood must be used, however, to preserve the look of historic materials. If used like normal siding, it must have a reveal of no more that 4.25 inches.
F. Rules for Masonry Wall Coverings
8. Split-faced block shall not be used in new construction or as a replacement for deteriorated masonry units. One exception is split-faced block which can be used as a retaining wall.
10. Stucco-surfaced masonry can be an appropriate for foundations in new construction. Brick and stone can also be appropriate.
Rules for New Building Construction
O. Setbacks and Placement on the Lot
1. Maintain the historic façade lines of streetscapes by locating the front walls of new buildings in the same plane as those of adjacent buildings. If existing setbacks vary, a new building's setback shall respect those of adjacent buildings.
2. Do not violate the existing setback pattern by placing new buildings in front of or behind historic buildings on the street.
3. Do not place new buildings at odd angles to the street.
4. Side yard setbacks for new buildings shall be consistent with those of existing historic buildings, so gaps are not left in the streetscape.
P. Scale and Massing
1. Relate the size and proportions of new structures to the scale of adjacent buildings.
2. Break up uninteresting boxlike forms into smaller varied masses like those found on existing buildings by the use of bays, extended front porches, and roof shapes.
3. New buildings must reinforce the scale of the neighborhood by their height, width, and massing.
4. New buildings must be designed with a mix of wall areas with door and window elements in the façade like those found on existing buildings.
5. Roof shapes must relate to the existing buildings, as must roof coverings.
Q. Height of Foundation and Stories
1. Avoid new construction that varies in height, so that new buildings are equal to the average height of existing buildings.
2. The foundation height of new buildings shall duplicate that of adjacent buildings, or be an average of adjacent building foundation heights.
3. For new buildings with more than one story, beltcourses or other suggestions of divisions between stories that suggest the beginnings of additional stories shall be used.
4. The eave lines of new buildings shall conform to those of adjacent properties.
R. Materials
1. The materials used for new building exteriors shall be consistent with materials already found on buildings on the street.
2. Artificial siding and split face block are not acceptable materials for use on new buildings.
S. Features
1. Design new buildings with a strong sense of a front entry.
2. Use front porches in new designs, and make the size of those porches useable for sitting. New porches shall be at least eight feet deep, shall contain design features such as columns and balustrades that introduce architectural diversity, and shall extend across more than half of the front façade.