Mayo Electric Inc is an electrical contractor with 3 tracked San Francisco building-permit projects on record, with the latest filing in that record 49 days ago. Its filings (Jul 2025 to Jul 2026) are concentrated in South of Market and Bayview Hunters Point, 67% residential. If you work at Mayo Electric Inc, claim this page to add a description.
Filed 49 days ago
#517
by SF filing activity
among SF specialty contractors, 90 days to Aug 23, 2026
3
projects
from 41 filings
7/16
active weeks
weeks with a filing (16 weeks to Aug 23, 2026)
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Permit-backed projects · PermitPipeline’s independent record
$248K Bayview Hunters Point multifamily renovation
Last active Jul 2025 · Mayo Electric: specialty contractor
Revise pp20260615608: adding scope, installing 2 more boilers. 4 boilers total. serial numbers are g24598194,g24598195
GC named · 3 specialty contractors identified
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$24K South of Market multifamily renovation
Grade DActive 1 month ago · Mayo Electric: specialty contractor
Units 416, 414, 413, 407, 402, 310, 307, 303, 301, 216, 207, 102, 101: replace (13) (e) bathroom exhaust fans w/ whisper sense humidity…
GC named · Specialty contractor identified
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$78K South of Market commercial renovation
Active 11 months ago · Mayo Electric: specialty contractor
New fused shunt disconnect for elevator; (5) 20 amp 120v dedicated circuits for elevator room/pit; (1) 20 amp 120v & (1) 20 amp 208v sp…
GC named · 2 Design firms identified · 3 specialty contractors identified
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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.
3 project records for Mayo Electric Inc: addresses, values, project teams
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Declared values3 on filetoo few for a rangeLast filed49 days agoSouth of Market · Jul 30, 2026Last 90 days3 active1 newly filed
Filing activity · 16 weeks to Aug 23, 2026 · peak Jun 2026
MAY
JUN
JUL
AUG
Project mix · by use
Commercial33%
Residential67%
Geography · by neighborhood
South of Market67%
Bayview Hunters Point33%
Shared-project connections
| # | Firm | Primary role | Shared | Relative |
|---|---|---|---|---|
| None on shared filings. | ||||
| 1 | Cahill And Kavanaugh Inc * See Note* | Plumbing contractor | 3 | |
| 2 | Freestone Reconstruction Inc | General contractor | 2 | |
| 3 | Aquamatic Fire Protection | General contractor | 1 | |
| 4 | City Mechanical Inc | General contractor | 1 | |
| 5 | United Systems Fire And Security LLC | General contractor | 1 | |
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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 relationships2 firmsFirms this one appears with on more than one project, out of 6 in total.
Permit speed—Too few filings with a recorded issue date to publish a median.
Frequently asked questions
How many SF projects does Mayo Electric Inc appear on?▾
PermitPipeline tracks 3 San Francisco building-permit projects for Mayo Electric Inc (Jul 2025 to Jul 2026). 3 had filing activity in the last 90 days.
Does Mayo Electric Inc work on commercial or residential projects?▾
Across its tracked San Francisco filings, 33% of Mayo Electric Inc's projects are commercial and 67% are residential (multifamily, small residential, or single-family). Based on permit records, not self-reported.
Where in San Francisco does Mayo Electric Inc work?▾
67% of Mayo Electric Inc's tracked San Francisco projects are in South of Market.
Which firms appear most often on the same filings as Mayo Electric Inc?▾
Mayo Electric Inc most frequently appears on the same San Francisco permit filings as Cahill And Kavanaugh Inc * See Note*, Freestone Reconstruction Inc, Aquamatic Fire Protection. Appearing together indicates association on shared filings, not a proven working relationship.
Is Mayo Electric Inc an electrical contractor?▾
Mayo Electric Inc is listed as an electrical 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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