Permit Record

Alteration Commercial

35 Landsdowne St, Cambridge, MA 02139

ClassificationBuilding: Alteration and AdditionCommercial Alteration
Reliable value$51,510
ContractorSiena Construction Corporation →
Permit record
Parties
Contractor
Siena Construction Corporation
Applicant
Becca Patnode
Owner
Not in source
Architect
Not in source
Engineer
Not in source
Contractor license
Not in source
Building & lot · PLUTO
Building class
Not in source
Zoning district
Not in source
Lot area
Not in source
Year built
Not in source
Units (total)
Not in source
Units (residential)
Not in source
Units (commercial)
Not in source
Floor area
202,423 sq ft
Parcel & enrichment
Parcel APN
69-179
Climate zone (IECC)
5A
Roof area (est.)
Not derivable — no building-size signal for this permit
HVAC tonnage (est.)
Not derivable — no building-size signal for this permit
Building type
B
Building subtype
Commercial / Mixed Use
Geocode & dates
Coordinates
42.3610, -71.1002
Geocode confidence
100%
Geocode source
Not in source
Issued
Mar 31, 2025
Applied
Mar 12, 2025
Work class
Commercial
Description
Source description

Replacing 2 existing loading dock doors. New doors to tie into Fire Alarm system. Existing opening to remain.

Status
Current status
finaled
Source status
Complete
Finaled
Mar 31, 2025
Provenance
First seen by PermitCore
May 18, 2026 · 16:17 UTC
Last seen
Aug 6, 2026 · 11:31 UTC
Last changed
May 18, 2026 · 16:17 UTC
Data-quality checks0 of 12 flagged

0 of 12 data-quality rules flagged anything on this permit.

Checks not flagged

  • Geocode out of bounds
  • Geocode is sentinel
  • Issued date in the future
  • Issued date parse bug
  • Issued date is placeholder
  • Commercial units is placeholder
  • Residential units out of bounds
  • Residential units is placeholder
  • Total units out of bounds
  • Total units is placeholder
  • Valuation out of bounds
  • Valuation is placeholder
Project timeline at this parcel

20 permits at this parcel (parcel 69-179) · Dec 6, 2018 – Mar 31, 2025

  1. Mar 31, 2025This permitAlteration Commercial · Finaled$51,510Siena Construction Corporation
  2. Nov 15, 2023cambridge_aa_248064Alteration Commercial · Issued$233,165Siena Construction Corporation
  3. Jul 19, 2023cambridge_aa_230823Alteration Commercial · Issued$725,000Siena Construction
  4. Jan 6, 2023cambridge_aa_204277Alteration Commercial · Finaled$4,723,749Wise Construction
  5. Jan 6, 2023cambridge_aa_205180Alteration Commercial · Finaled$319,495Wise Construction
  6. Dec 29, 2022cambridge_aa_202764Alteration Commercial · Finaled$200,598Siena Construction
  7. Nov 30, 2022cambridge_aa_202943Alteration Commercial · Finaled$991,388Wise Construction
  8. Jun 7, 2022cambridge_aa_176880Alteration Commercial · Finaled$292,507Wise Construction
  9. Apr 5, 2022cambridge_aa_167651Alteration Commercial · Issued$110,000Wise Construction
  10. Jan 31, 2022cambridge_aa_156219Alteration Commercial · Issued$61,847Wise Construction
  11. Jan 20, 2022cambridge_aa_158087Alteration Commercial · Issued$234,100Siena Construction
  12. Nov 17, 2021cambridge_aa_150785Alteration Commercial · Issued$2,891,939Wise Construction
  13. Jul 28, 2021cambridge_aa_125332Alteration Commercial · Finaled$10,584,107Wise Construction
  14. Jul 26, 2021cambridge_aa_129912Alteration Commercial · Issued$133,570Wise Construction
  15. Dec 8, 2020cambridge_aa_99533Alteration Commercial · Finaled$1,671,224Siena Construction Corporation
  16. Oct 29, 2019cambridge_aa_57722Alteration Commercial · Issued$92,231Dpr Construction, A General Partnership
  17. Oct 22, 2019cambridge_aa_58589Alteration Commercial · Issued$409,554Siena Construction
  18. Jan 3, 2019cambridge_aa_29440Alteration Commercial · Issued$104,441Siena Construction Corporation
  19. Jan 3, 2019cambridge_aa_29022Alteration Commercial · Issued$320,847Siena Construction Corporation
  20. Dec 6, 2018cambridge_aa_25972Alteration Commercial · Issued$396,427Siena Construction Corporation

Full permit history at this parcel · as of Jul 8, 2026.

Other permits by Siena Construction Corporation

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Developer details
Permit #
cambridge_aa_1155545
Canonical ID
309:cambridge_aa_1155545
Source permit ID
cambridge_aa_1155545
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