Permit Record

Other

20 Louisburg SQ, Boston, MA 02108

ClassificationCertificate of Occupancy - INTEXT
Reliable value$6,050,000
ContractorNot in source
Permit record
Parties
Contractor
Not in source
Applicant
Jonathan Slocum
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
Floor area
Not in source
Parcel & enrichment
Parcel APN
501719000
Climate zone (IECC)
5A
Roof area (est.)
Not in source
HVAC tonnage (est.)
Not in source
Building type
Not in source
Geocode & dates
Coordinates
42.3587, -71.0692
Geocode confidence
100%
Geocode source
Not in source
Issued
2026-06-22
Applied
Not in source
Work class
Residential
Description
Source description

Single Family DwellingTemporary Certificate for Same - Valid for 60 Days, To Expire 09/22/2026ALT1550552 Issued 4/22/2024, A1764354 Issued 8/27/2025 &; A1613947 Issued 8/1/2024

Status
Current status
finaled
Source status
Closed
Provenance
First seen by PermitCore
May 4, 2026 · 20:05 UTC
Last seen
Jun 24, 2026 · 23:05 UTC
Last changed
Jun 24, 2026 · 23:05 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

40 permits at this parcel (parcel 501719000) · 2012-06-14 – 2026-06-22

  1. 2026-06-22This permitOther · Finaled$6,050,000
  2. 2026-03-05E1822888MEP Electrical · Issued$35,000
  3. 2025-12-19EFA1806748MEP Electrical · Issued$55,000
  4. 2025-12-04G1803811MEP Plumbing · Finaled$3,500
  5. 2025-10-03E1784888MEP Electrical · Issued$10,000
  6. 2025-08-27A1764354Alteration Residential · Issued$1
  7. 2025-04-14ELV1704142MEP Electrical · Finaled$38,000
  8. 2025-03-07E1694628MEP Electrical · Finaled$350,000
  9. 2025-03-06ELV1696245MEP Electrical · Finaled$15,000
  10. 2025-03-05ELV1695940MEP Electrical · Finaled$10,000
  11. 2024-12-16G1677721MEP Plumbing · Finaled$25,000
  12. 2024-12-12EFA1676308MEP Electrical · Issued$55,000
  13. 2024-11-26G1673049MEP Plumbing · Issued$3,000
  14. 2024-10-30PL1667011MEP Plumbing · Finaled$150,000
  15. 2024-08-01A1613947Alteration Residential · Issued$50,000
  16. 2024-04-22ALT1550552Alteration Residential · Issued$6,000,000
  17. 2024-01-12E1562324MEP Electrical · Issued$10,000
  18. 2023-12-01EFA1549180MEP Electrical · Issued$6,500
  19. 2023-11-29SF1547288Demolition · Finaled$60,000
  20. 2022-08-08E1366396MEP Electrical · Finaled$8,500
  21. 2022-07-26SF1339410Roofing · Finaled$80,000
  22. 2022-07-25PL1365846MEP Plumbing · Issued
  23. 2022-07-25G1365844MEP Plumbing · Finaled$15,000
  24. 2021-06-24E1212465MEP Electrical · Issued$2,500
  25. 2017-09-15SF750683Roofing · Finaled$26,600
  26. 2016-04-07SF561058Alteration Residential · Finaled$4,000
  27. 2016-03-03E567185MEP Electrical · Finaled$2,000
  28. 2016-03-02PL567617MEP Plumbing · Finaled
  29. 2016-01-21PL556823MEP Plumbing · Finaled
  30. 2015-03-04E451120MEP Electrical · Finaled$2,000
  31. 2014-05-22SF364840Alteration Residential · Finaled$55,000
  32. 2013-07-26PL265255MEP Plumbing · Finaled$15,000
  33. 2013-07-26G265253MEP Plumbing · Finaled$2,000
  34. 2013-07-23E259357MEP Electrical · Finaled$15,000
  35. 2013-06-20SF253806Alteration Residential · Finaled$800,000
  36. 2013-03-22SF228759Demolition · Finaled$20,950
  37. 2013-01-14G213532MEP Plumbing · Finaled$600
  38. 2012-07-16PL162174MEP Plumbing · Finaled$20,000
  39. 2012-07-16G162178MEP Plumbing · Finaled$20,000
  40. 2012-06-14SF150555Alteration Residential · Finaled$125,000

Full permit history at this parcel · as of 2026-06-28.

Developer details
display_permit_id
COO1823970
canonical_uid
69:COO1823970
source_permit_id
COO1823970
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