Permit Record

Alteration Residential

124 Holworthy St, Cambridge, MA 02138

ClassificationBuilding: Alteration and AdditionResidential Alteration
Reliable value$2,300
ContractorNot in source
Permit record
Parties
Contractor
Not in source
Applicant
Mark Killoren
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
Not in source
Parcel & enrichment
Parcel APN
254-103
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
R
Building subtype
One or Two Family Dwelling
Geocode & dates
Coordinates
42.3780, -71.1509
Geocode confidence
100%
Geocode source
Not in source
Issued
Mar 8, 2022
Applied
Feb 22, 2022
Work class
Residential
Description
Source description

I have a existing building permit to complete gut and renovate a existing single family and want to add a deck onto a existing roof to a existing deck

Status
Current status
finaled
Source status
Complete
Finaled
Mar 8, 2022
Provenance
First seen by PermitCore
May 18, 2026 · 16:17 UTC
Last seen
Jul 2, 2026 · 11:40 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

2 permits at this parcel (parcel 254-103) · Nov 29, 2021 – Mar 8, 2022

  1. Mar 8, 2022This permitAlteration Residential · Finaled$2,300
  2. Nov 29, 2021cambridge_aa_151458Alteration Residential · Issued$266,000

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

Developer details
Permit #
cambridge_aa_163621
Canonical ID
309:cambridge_aa_163621
Source permit ID
cambridge_aa_163621
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