Keystone Surveying & Mapping specializes in land surveying and is a leading provider of professional surveying services throughout Pennsylvania, Ohio, West Virginia and New York. 940 West Chestnut Street, Washington, PA 15301, 724-206-0857.
Corporate Office
Division of Diamond Technical Services, Inc. (DTS)
Keystone Surveying & Mapping, Inc. (KSM)
199 South Johnson Road
Houston, PA 15342
Tel: 724-514-7949
Fax: 724-514-7047
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Ohio Regional Office
Keystone Surveying & Mapping, Inc. (KSM)
1392 Cadiz Road
Wintersville, Ohio 43953-9058
Tel: 740-275-4041
Fax: 740-275-4083
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