Contractor Profile

J & M Keystone, Inc., J & M Keystone

J & M Keystone, Inc., J & M Keystone is a diversified San Diego contractor — 52 segment-eligible permits spanning 4 segments, led by residential mep (37%) and multifamily alteration (35%). Its permit record in San Diego spans 2004–2021. Reliable permit valuations total ≈$268K (across the 42% of filings with a valuation we can stand behind).

First permit: Oct 18, 2004 (7,928d ago)Latest permit: Sep 29, 2021 (1,738d ago)
The sales record
Territory
San Diego
Active
2004–2021 · 17 yrs
Licenses on file
0
Canonical ID
559,664
Reliable value
$268K
Coverage
42%
Reliable filings
22
Rank in San Diego
#278
Permits (all-time)
115
Filings 90d
0
Filings 30d
0
Latest permit
Sep 29, 2021
Typical project size$1Ktypically $1K–$17K across 22 valued permits
Where they work
Firmographics
License & registration IDs on fileNo license records in the source data.
Direct contactNot in our data — we don’t fabricate firmographics.
Service area

Typical service area ~11 mi around San Diego

The p90 footprint of where J & M Keystone, Inc., J & M Keystone has pulled permits in San Diego — based on 115 geocoded permits (100% of their indexed set). It reflects detected permit activity, not a guaranteed service-area claim.

  • San Diego115
Recent permits

No recent permits indexed

No permits for J & M Keystone, Inc., J & M Keystone are indexed yet. This updates automatically as the pipeline ingests new filings. Explore segment breakdowns by metro:

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