(415) 424-15961872 Evergreen St, San Mateo, CA 94401
Mayen HVAC is a plumbing contractor with 33 tracked San Francisco building-permit projects on record, with the latest filing in that record 48 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 $10K–$30K. If you work at Mayen HVAC, claim this page to add a description.
Filed 48 days ago
#352
by SF filing activity
among SF specialty contractors, 90 days to Oct 4, 2026
33
projects
from 118 filings
8/16
active weeks
weeks with a filing (16 weeks to Oct 4, 2026)
Portfolio · $399/yearFree during launch
Work at Mayen Hvac?
Claim your firm and publish up to three projects with photographs. Claiming also gives you your logo, a short introduction and your own contact details.
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
View project details →
$50K Visitacion Valley multifamily renovation
Grade BActive 5 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
View project details →
$825K Oceanview/Merced/Ingleside new multifamily building
Active 10 months ago · 2 filings · Mayen HVAC: specialty contractor
Online electrical permit: category 4a: installation of fire warning and controlled devices of up to 2,500 ft². installation of a new…
GC named · Architect identified · 3 Design firms identified · Engineer identified · 5 specialty contractors identified
View project details →
30 more
Mayen HVAC projects with project intelligence
Scopes, values, teams and filing history for every one
Start your 14-day trial →
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.
33 project records for Mayen HVAC: addresses, values, project teams
Start 14-day free trial
Typical project$10K–$30K$25K typical1.5× the SF median ($17K)Last filed48 days agoTwin Peaks · Aug 20, 2026Last 90 days3 active0 newly filed
Filing activity · 16 weeks to Oct 4, 2026 · peak Jul 2026
JUN
JUL
AUG
SEP
Project mix · by use
Residential100%
Geography · by neighborhood
West of Twin Peaks55%
Sunset/Parkside15%
Bayview Hunters Point10%
Hayes Valley10%
Noe Valley10%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| 1 | HC Design & Management | Architecture | 8 | |
| 2 | 2m Architecture | Architecture | 1 | |
| 3 | Altos Engineering | Architecture | 1 | |
| 4 | Creates Cool | Architecture | 1 | |
| 5 | Ecr Engineering | Architecture | 1 | |
| 1 | SF Plumbing & Fire Protection Inc | General contractor | 9 | |
| 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 |
Create a free account to see every firm on these projects and how many projects each one shares.
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.
Get an email when Mayen HVAC files a new project. Monitor up to 10 firms free.
Create your free account
Already have an account? Log in
Need full project records — addresses, values, parties? Start 14-day free trial
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 relationships7 firmsFirms this one appears with on more than one project, out of 52 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 33 San Francisco building-permit projects for Mayen HVAC (Jan 2025 to Jun 2026). 3 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?▾
55% 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 33 San Francisco projects Mayen HVAC has on record that state one is $25K (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 SF Plumbing & Fire Protection Inc, HC Design & Management, 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 Oct 4, 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.
Firm directories by market