In contrast, Leeds Clark, Inc. provides the most complete, precise, and accurate window/door surveys available in the market today. Taking a hands on approach coupled with 40+ years experience, Tom Clark has made a science out of historic window/door surveys. Utilizing many different tools, Leeds Clark, Inc.'s window/door surveys provide all parties involved a detailed assessment and overview of existing window/door conditions. Leeds Clark, Inc. documents the condition of every window/door opening and its components: window sashes, doors, jambs, sills, brick moldings, casings, stools, and aprons. Photo documentation of existing conditions and problem areas helps the building owner and architect understand and visualize the scope of work needed to restore/replicate the historic windows/doors.


  • Documentation of window/door building materials & methodology of construction
  • Assist in planning and methodology for carrying out window/door preservation/restoration effort
  • Assist in window/door specifications and pro-forma estimating to determine budget
  • Locate proper material sources that conform to Department of Interior guidelines
  • Perform window/door mock-ups to document specifications and set finished product standards

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Historic Window/Door Surveys & Specifications

Leeds Clark, Inc. offers historic window/door surveys and specifications to architects, general contractors, government agencies, and building/residence owners. These valuable services help determine the actual condition and work needed to restore the window/door units back to their original condition. Window/Door surveys are often conducted by inexperienced people in a brief visual walk through to determine a percentage of typical and atypical conditions. Prices are assigned to these conditions and multiplied by the number of window/door units. This type of survey is dangerous to all parties involved. Architects may rely on this to categorize the work, but this approach makes it very difficult to establish a budget. Contractors are then asked to bid the work based on these brief inspections. With limited knowledge of actual conditions, they are advised to field verify and bid according to the specifications. Many times, the work is underestimated and all parties are affected by the outcome.

Leeds Clark, Inc. can also assist architects, general contractors, government agencies, and building/residence owners in the following ways:

Leeds Clark, Inc.'s experience in condition assessment helps the architect and building/residence owner establish needs, offer realistic solutions and specifications, then, develop a window/door preservation/restoration plan and budget to determine feasibility of the proposed project.