The Ideal Preservation Approach
Additions to landmarks and contributing structures within historic preservation districts have the potential to diminish their historical and architectural integrity. Poorly executed additions can also significantly devalue a property—potential buyers are sure to avoid structures with makeshift additions. Before undertaking projects such as room or porch additions, property owners should attempt to accommodate needed functions within the existing structure via interior modifications. If an addition is necessary, its size should be limited so that it does not visually overpower the existing structure. An attempt should be made to limit the visibility of the addition from the street by placing it on the rear or side of the existing structure or above its back portions if an upper story is to be added. Finally, the design and materials of the addition should be compatible with those of the existing structure.
Addition projects require review by the Historic Preservation Commission. The more nearly a project conforms to the ideal, the more likely it is that the Commission will approve the project and issue a Certificate of Appropriateness.
Issues the Commission Will Consider When Reviewing Proposed Addition Projects
· Whether the size and placement of the addition would preserve the historical and architectural integrity of the existing structure
· Whether the addition will have the same vertical or horizontal character as the existing structure
· Whether the roof of the new addition will maintain the shape, pitch, and material of the existing roof
· Whether the windows, doors, and trim of the addition will be similar in material, size, style, and spacing to those elements of the existing structure
· Whether siding of the addition will be compatible with the original siding in scale, texture, and style
· Whether the foundation materials and details of the addition will be similar to those of the existing foundation
For more information on historic preservation in Pomona, contact the City Planning Division at 505 South Garey Avenue, or call 909 620-2191.