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Resource Number: 5BL 11321 <br />Temporary Resource Number: 157508484002 <br />20. Special features: Porch, fence <br />21. General architectural description: 620 Walnut is a one-story house of wood frame construction, rectangular in <br />plan, with its primary elevation facing north to Walnut Street. The foundation is concrete masonry. The exterior <br />is clad with white horizontal steel siding, with horizontal composition gable siding painted red. The roof is a <br />front gable with gray asphalt shingles. The front entrance porch has three concrete steps down to grade and a <br />concrete stoop covered by a shed roof on black wrought -iron posts. The front door is centered on the fa9ade. <br />The door is not original. It has divided light windows, a white aluminum storm/screen door and a vertical 5-light <br />sidelight north of the door. Windows are white replacement sash of either aluminum or wood. <br />22. Architectural style/building type: Minimal traditional <br />23. Landscaping or special setting features: Jefferson Place Subdivision is a historic residential neighborhood <br />adjacent to downtown Louisville. The subdivision is laid out on a standard urban grid of narrow, deep lots with <br />rear alleys. Houses are built to a fairly consistent setback line along the streets with small front lawns, deep <br />rear yards and mature landscaping. Small, carefully maintained single-family residences predominate. Most of <br />the houses are wood framed, one or one and one-half stories in height, featuring white or light-colored <br />horizontal wood or steel siding, gabled or hipped asphalt shingled roofs and front porches. While many of the <br />houses have been modified over the years, most of the historic character -defining features have been <br />preserved. 620 Walnut Street is of more recent construction but is consistent with these patterns. It blends well <br />with the scale of the neighborhood, if not the historic character. It has a shallow, unfenced front lawn with a <br />narrow concrete walk along the east side leading to the concrete front porch. There is a red brick raised planter <br />along the north side of the porch. Along the west side of the property is a vacated alley with a split driveway <br />leading to a storage shed. West of the driveway there a concrete curb, a narrow strip of grass and a wooden <br />fence along the west property line. The back yard is small, with a grass lawn and concrete paving, and a wood <br />privacy fence along the south and east sides. <br />24. Associated buildings, features, or objects: There is a small storage shed in the southwest corner of the lot with <br />white composition panel siding, a gable roof and a small door opening north. <br />IV. ARCHITECTURAL HISTORY <br />25. Date of Construction: Estimate: Actual: 1959 <br />Source of information: Boulder County property files <br />26. Architect: Unknown <br />Source of information: NA <br />27. Builder/Contractor: Unknown <br />Source of information: NA <br />28. Original owner: Norman Mossoni <br />Source of information: Boulder County property files <br />29. Construction history (include description and dates of major additions, alterations, or demolitions): <br />30. The house was built in 1959 on the same property with 841 Jefferson (5BL11307). The adjacent alley west of <br />the house was vacated in 1973. The front brick planter was added before 1977. Asbestos siding was replaced <br />with steel siding and composition gable siding in 1988. Some of the windows were replaced in existing openings <br />at some time after 1977, probably in 1988. A sidelight adjacent to the front door is not original. In 1998 the <br />property was re -platted as Mossoni Place, with 841 Jefferson as Lot 1 and 620 Walnut as Lot 2. The two lots <br />are still under the same ownership. <br />30. Original location X Moved Date of move(s): <br />V. HISTORICAL ASSOCIATIONS <br />31. Original use(s): Domestic, Single Dwelling <br />2 <br />