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Mixed-use · Other activity

21 Harvard Yard, Cambridge, MA 02138

Neighborhood activity

Issued

What the public record says

Thayer Hall: Complete replacement of 34 VELUX GGL PK10 3070 skylights, restoration of approximately 1,326.60 SF of purple mottled natural slate roof field over Grace Ice & Water Shield underlayment, hazardous material abatement at 34 skylight openings, copper throughwall flashing and counter-flashing at Chimney A, and masonry restoration of Chimney A (scaffold, rebuild, cut & point 50%, brick removal).

Permit typeBuilding: Alteration and Addition
Declared job value$734,500
Permit record1216963
Related permits1216963

Recorded milestones

  1. Permit issued

Milestones apply to the recorded permits. They do not confirm that an entire development is complete or a business is open. No opening date is inferred.

Sources & confidence

Category labels may be inferred from official fields and scope descriptions. Related permits are grouped only where an explicit source project identifier is available. We do not combine unrelated permits merely because they share an address.

View original city source ↗

Retrieved 11/4/2026, 5:40:18 AM. Latest successful source retrieval.

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