(415) 424-15961872 Evergreen St, San Mateo, CA 94401
Mayen HVAC is a plumbing contractor with 20 tracked San Francisco building-permit projects on record, with the latest filing in that record 28 days ago. Its filings (Jan 2025 to Jun 2026) are concentrated in West of Twin Peaks and Sunset/Parkside, 100% residential. A typical project in the record declares $19K–$30K. If you work at Mayen HVAC, claim this page to add a description.
Filed 28 days ago
#222
by SF filing activity
among SF specialty contractors, 90 days to Aug 23, 2026
20
projects
from 80 filings
8/16
active weeks
weeks with a filing (16 weeks to Aug 23, 2026)
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Permit-backed projects · PermitPipeline’s independent record
$88K Sunset/Parkside single-family renovation
Grade BActive 2 months ago · Mayen HVAC: specialty contractor
Work category: 1m; install one heat pump system multi zone
GC named · Engineer identified · 2 specialty contractors identified
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$50K Visitacion Valley multifamily renovation
Grade BActive 4 months ago · Mayen HVAC: specialty contractor
Work category: 2pb; kitchen sink, two ventless dryer and laundry gas service
GC named · Architect identified · 2 specialty contractors identified
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$125K West of Twin Peaks single-family renovation
Last active May 2025 · Mayen HVAC: specialty contractor
Work category: 1m; install a central furnace and flue
GC named · Architect identified · 3 specialty contractors identified
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17 more
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Scopes, values, teams and filing history for every one
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Neighborhood, filing date, scope and declared value are shown here. Exact addresses,
owner names and mailing addresses, and full filing histories are part of the paid product.
20 project records for Mayen HVAC: addresses, values, project teams
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Typical project$19K–$30K$30K typical1.8× the SF median ($17K)Last filed28 days agoTwin Peaks · Aug 20, 2026Last 90 days4 active1 newly filed
Filing activity · 16 weeks to Aug 23, 2026 · peak Jul 2026
MAY
JUN
JUL
AUG
Project mix · by use
Residential100%
Geography · by neighborhood
West of Twin Peaks64%
Sunset/Parkside12%
Twin Peaks12%
Bayview Hunters Point6%
Bernal Heights6%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | HC Design & Management | Architecture | 8 | |
| 2 | 2m Architecture | Architecture | 1 | |
| 3 | Creates Cool | Architecture | 1 | |
| 4 | Ecr Engineering | Architecture | 1 | |
| 5 | L.A. Paul & Assoc. | Architecture | 1 | |
| 1 | SF Plumbing & Fire Protection Inc | General contractor | 8 | |
| 2 | Ward-Tek Inc. | General contractor | 8 | |
| 3 | Uniacke Electric A Partnership | Electrical contractor | 8 | |
| 4 | J L Electric | Electrical contractor | 2 | |
| 5 | O'donovan Plumbing Inc. | Plumbing contractor | 2 |
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Owner and developer names, and the projects behind each connection, are part of the Leads product.
Firms that appear on the same San Francisco permit filings. Association on shared filings, not a proven working relationship.
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State licenseNot connectedTrade licenses are held by BPELSG. That register is not part of the San Francisco permit record, and we do not yet read it.
Repeat working relationships6 firmsFirms this one appears with on more than one project, out of 34 in total.
Permit speed—Too few filings with a recorded issue date to publish a median.
Frequently asked questions
How many SF projects does Mayen HVAC appear on?▾
PermitPipeline tracks 20 San Francisco building-permit projects for Mayen HVAC (Jan 2025 to Jun 2026). 4 had filing activity in the last 90 days.
Does Mayen HVAC work on commercial or residential projects?▾
Across its tracked San Francisco filings, 0% of Mayen HVAC's projects are commercial and 100% are residential (multifamily, small residential, or single-family). Based on permit records, not self-reported.
Where in San Francisco does Mayen HVAC work?▾
64% of Mayen HVAC's tracked San Francisco projects are in West of Twin Peaks.
What is a typical Mayen HVAC project worth?▾
The median declared value across the 20 San Francisco projects Mayen HVAC has on record that state one is $30K (declared value on the permit filing, not contract value).
Which firms appear most often on the same filings as Mayen HVAC?▾
Mayen HVAC most frequently appears on the same San Francisco permit filings as HC Design & Management, SF Plumbing & Fire Protection Inc, Ward-Tek Inc.. Appearing together indicates association on shared filings, not a proven working relationship.
Is Mayen HVAC a plumbing contractor?▾
Mayen HVAC is listed as a plumbing contractor on its San Francisco permit filings. Roles on this profile are derived from the role each firm holds on public SF DBI filings.
Public aggregate — full project records are part of the paid leads product. Ranking, filing activity, project mix and geography were last recomputed Aug 23, 2026. Project counts, declared values and filing dates are read live from SF DBI filings.
How far back does this record go?▾
This page covers the recent permit record, not the firm’s full history. A firm’s earliest filing here means it was already working when our record opens, not that it started then.
Sources
San Francisco Department of Building Inspection permit filings.
Record source
Read directly from SF DBI filings.
Photography
None are shown until the firm supplies them.
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