| 8-Other: asbestos shingles |
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| Structural System | |
| 9a-Wood Frame Interlocking Joints | 9b-Wood Frame Light Members: | 9c-Masonry: | 9d-Metal | | | | 9d-Metal Comment: | 9e-Other | | | | 9e-Other Comment: |
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| Condition | |
| 10a-Excellent | 10b-Good | 10c-Fair | 10d-Deteriorated |
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| Integrity | |
| 11a-Original Site | 11b-Moved | | If so, when? | | | 11c-Alterations: Front door moved and altered. Windows altered |
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| Photo & Map | |
| 12-Photo : | | | 13-Map: | [Unavailable.] |
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| Threats | |
| 14a-None Known: | | 14b-Zoning | 14c-Roads | 14d-Developers | | : 14e-Deterioration | | | 14f-Other: | | 14-Comment: |
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Related Outbuildings and Property | |
| 15a-Barn | | 15b-Carriage House | | 15c-Garage | | 15d-Privy | | 15e-Shed | | 15f-Greenhouse | | 15g-Shop | | 15h-Gardens | | 15i-Landscape Features | | | 15i-Landscape Features: very close to road | | 15j-Other: | | 15-Comment: |
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| Surroundings of the Building | |
| 16a-Open Land | | 16b-Woodland | | 16c-Scattered Bldgs. | | 16d-Densely Built-up | | 16e-Commercial | | 16f-Industrial | | 16g-Residential | | 16h-Other: |
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| Interrelationship of Building and Surroundings | |
| | 17-Interrelationships: | This structure is located in the Hamlet of Brookhaven, which was first settled in the late eighteenth century. |
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| Other Notable Features of Building and Site | |
| | 18-Notable Features: | This structure was owned by Gildersleeve in 1858. «» |
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| Significance | |
| | 19-Initial Const Date: | before 1858 «» | | 19-Architect: | «» | | 19-Builder: | [Probably Andrew M. Gildersleeve. The 1858 Chace map indicates a B. Gildersleeve residing on the northeast corner of Old Town Road and Montauk Highway. B. Gildersleeve is likely Andrew's father, and the residence where Andrew was living at the 1850 census. Just to the east is a residence labeled A. M. Gildersleeve, undoubtedly Andrew. Since Andrew was a carpenter, he likely built the house in the interval between 1850 and 1858.] «» |
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| Historic and Architectural Importance | |
| | 20-Importance: | 1 1/2 story, five bay, gable roof house with high roof plate. 1 1/2 story gable roof wing on west. Five small floor-level windows under the eaves.
This is one of the last of the old houses in the hamlet left on Montauk Highway. «» |
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| Sources | |
| | 21-Sources: | Map of Suffolk County, by J. Chase. New York: 1858. «» |
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| Theme | |
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| Prepared By: | Ellen Williams, research assistant. |

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Supplemental Material: |
| Excerpt from "Field Inspection Report" dated 21 Jan 1982, by Barbara Van Liew:
" Riker
2527 Montauk Highway
Brookhaven
A 1 1/2 story gable-roof house with one-story wing on west and [text appears to be missing …]
small windows under eaves in the typical Long Island vernacular. This type of historic house greatly contributes to the visual quality of historic Montauk Highway which was one lined with such structures.
Recommendation: Every effort should be made to preserve the exterior integrity of this house. Certain interior walls were formerly removed by the owner. This may have caused an internal structural weakness which probably could be corrected by introducing appropriately placed supports. Jacking should be avoided except where specially warranted as it will cause further damage.«» |