How to Determine the Ceiling Height of Walk-out Bay Windows

Walk-out bay windows count as habitable space in a home for the purposes of calculating residential square footage if the window meets certain criteria. You'll also need to determine the ceiling height of walk-out bay windows to calculate your heating and cooling needs or to plan window treatments. Following basic guidelines for residential measurements will help you make the calculations you need for planning air conditioning or preparing a real estate listing. Always check local codes for up-to-date information.

Heavy-duty tape measure

Instructions

- 1
  Extend the tape measure from the floor to the ceiling of the walk-out bay window. Record this measurement.
- 2
  Round the measurement up to the nearest whole number and record this number if you need the measurement for estimating heating or cooling needs. This simplifies calculations.
- 3
  Take a measurement of the highest point and the lowest point of the ceiling if the bay window has an angled ceiling. Divide the difference to determine the average height of the walk-out bay window ceiling if you're estimating square footage of living space. For example, if the ceiling is 7 feet high at the lowest point and 9 feet high at the highest, the average ceiling height is 8 feet.

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