LLLocal Ledger
Bellevue, WA
PE-backedHVAC · Plumbing

Brennan Heating & Air Conditioning

Bellevue service area

One record from the Bellevue ownership pilot. Ownership status is not a quality rating, and this page is a permanent link to the evidence behind one claim — how the labels work.

← All 21 records
Ownership pathBrennan → The SEER Group → Genstar Capital

The SEER Group calls Brennan its founding flagship brand, and Genstar lists The SEER Group as a current investment. Brennan shares both a UBI and a principal of record with Raymark.

Ownership confidenceHigh
Evidence references3 sources
Ownership claim reviewedSep 17, 2026
State record verifiedSep 18, 2026

High confidence means: Registry-level proof, or an acquisition announcement plus a current portfolio listing. It grades the evidence behind the ownership call, not the business.

State record activeBRENNHA971R9

construction contractor · active · expires Dec 29, 2027

Registered as
BRENNAN HEATING & A/C LLC
UBI
602346866
Registered address
Seattle, WA
Primary principal
ERDAHL, DARRIN PAUL
Re-check this license at L&I ↗

Corporate fingerprint

From state records

Signals taken only from the Washington contractor registry — not from branding, pricing, or reviews.

Same legal entity (UBI 602346866) as
  • Raymark Plumbing & Sewer
Shares principals of record with
  • ERDAHL, DARRIN PAUL — also on Black Lion Heating & Air Conditioning, Alexander's Heating & Air Conditioning, Raymark Plumbing & Sewer

Prices, speed & reviews

Evidence limits

Every dated fact on file, split at the cited acquisition boundary. Ratings are not shown: the pilot’s review snapshots carry no capture date.

Acquisition boundaryNot establishedNo approved source states a transaction date, so records cannot be split into before and after.

Before 0 dated records

No dated record on file from before the acquisition.

After 0 dated records

No dated record on file from after the acquisition.

Dated records (unplaced) 2

  • Dec 29, 2003LicenseCurrent state license record effectiveconstruction contractor · active · expires 2027-12-29
  • Dec 29, 2003PrincipalPrincipal of record addedERDAHL, DARRIN PAUL
Change in price, speed, or reviews: not established.
  • Acquisition date not established from an approved source.
  • No dated price or service-speed record before the acquisition.
  • No dated price or service-speed record after the acquisition.
  • No dated review history on either side of the acquisition.
Compare your own before/after records for this company →

Evidence trail

3 sources
01SEER partner listSEER lists Brennan among its partner companies.theseergroup.com02Genstar investmentsGenstar lists The SEER Group as current.gencap.com03Washington L&I contractor license dataShares UBI 602346866 and a principal of record with Raymark.data.wa.gov
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This is ownership research, not a service-quality endorsement. Verify licenses, insurance, permits, scope, and price before hiring.