What ceiling height is required for a basement conversion?
Last Updated June 24, 2026
Most building codes require a minimum ceiling height of 7 feet for habitable basement space. In Portland and Seattle, a minimum height of 6ft 8in may be allowed depending on your project. Obstructions like beams and ducts may drop to 6'4" or 6'2" depending on your city and project. Neil Kelly team evaluates your specific basement during the design phase.
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