✓ California Licensed Contractor
✓ CSLB #964965
✓ Family-Owned & Operated
✓ Fully Insured
✓ Serving California Homeowners Since 2014

- ONE STOP SOLAR AND ROOFING IN SAN MATEO COUNTY
One Stop Solar and Roofing in Millbrae, CA
Green Conception delivers solar installation and roof replacement across Millbrae, CA - ZIP 94030 - with one crew, one permit package, and zero runaround for San Mateo County homeowners.
Since 2014
Serving California homeowners
60+
Verified customer reviews
$0
Down · 100% financing available
Lic. 964965
CSLB licensed & insured

— Built for this community
Why Millbrae Homeowners Are Pairing Solar With Roof Work
Millbrae's housing stock is old. Most homes in 94030 were built between the 1950s and 1970s, and their roofs were never designed to carry a solar array. PG&E rates in San Mateo County now average among the highest in the state - some time-of-use tiers hit 50 cents per kilowatt-hour. Installing solar on a roof that has five years left is expensive twice: once to put the panels up, once to pull them off when the roof fails. Green Conception checks the roof first, replaces what needs replacing, then installs the solar system on top - one mobilization, one permit package, one point of contact. That's the energy efficiency angle most Millbrae homeowners miss until it's too late.
— The benefits
Six Reasons Millbrae Homes Need Both Done Together
One Permit Saves Real Time
San Mateo County building permits for roofing and solar filed together typically process faster than two separate applications. 94030 homeowners avoid double inspection windows and redundant plan-check fees.
PG&E Bills Drop Fast
Millbrae sits in PG&E territory where residential rates rank among California's steepest. A properly sized solar system offsets most of a household's usage within the first billing cycle after activation.
Roof Warranty Stays Intact
Mounting solar on an old or compromised roof voids most manufacturer warranties. Replacing the roof first means your shingle warranty and your panel warranty run concurrently with zero conflicts.
Fog Belt Panels, Sized Right
Millbrae's marine microclimate reduces peak sun hours compared to inland California cities. Green Conception sizes arrays specifically for bay area fog patterns - not inland averages that leave systems underperforming.
Single Crew, Less Disruption
Two contractors mean two mobilizations, two site setups, and twice the time your home is under construction. One crew handles both trades in a single project window. Neighbors notice the difference.
One Warranty, One Call
Workmanship disputes between roofers and solar installers are common when separate companies overlap. Green Conception covers both under one warranty so there's never a finger-pointing problem if something leaks.
01
Free Roof and Solar Inspection
A licensed inspector walks the roof, checks the attic, and photographs the electrical panel. You get a written condition report before any quote is discussed. No pressure. No obligation.
02
Written Quote, Both Scopes
94030 homeowners get a single itemized estimate covering roofing materials, labor, solar equipment, and permit fees. One document. Nothing hidden in a second contract later.
03
San Mateo County Permit Filing
Green Conception submits the combined permit application to San Mateo County. Plan check typically runs 3-5 business days. We track status and notify you when it's approved.
04
Roof First, Then Solar
Roofing tear-off and installation happen first. Solar racking follows immediately on the new surface so the deck is never exposed between trades. One continuous project window, not two separate visits.
05
Inspection, Interconnection, Done
City inspection covers both scopes at once. PG&E interconnection paperwork files the same day panels energize. Your system is live and your warranty clock starts from one unified date.
— How it works
How Green Conception Runs a Millbrae Solar and Roofing Project
Every project in 94030 starts with a physical site visit - not a satellite estimate. Green Conception checks the existing roof deck, attic ventilation, and electrical panel before drawing anything up. San Mateo County permits for combined roofing and solar typically take 3-5 business days for plan check approval, and we handle the submission. Once the permit is issued, roofing comes first: tear-off, deck inspection, underlayment, and new shingles or tile. Solar racking goes on immediately after, so the roof isn't left exposed between trades. Panels mount, wiring runs to the updated electrical panel, and PG&E interconnection paperwork gets filed the same day. City inspection closes out both scopes. No deposit required to start your estimate.
— More from Green Conception
More Services for Millbrae Homes



Gutter Replacement and Drainage
Millbrae's fog season sends heavy moisture runoff off rooflines constantly. Green Conception installs and replaces gutters alongside roofing projects so new shingles drain properly from day one. Clogged or undersized gutters on bay area homes accelerate fascia rot fast. We size the system right.
Attic Insulation and Ventilation
Poor attic ventilation is one of the biggest reasons roofs in 94030 age prematurely and solar systems underperform. Green Conception checks and upgrades attic insulation and ridge ventilation as part of a full roofing project, keeping heat and moisture from shortening what you just paid to install.
- Why us
Why 4S Ranch Homeowners Choose Green Conception

How Green Conception Thinks About Solar and Roofing Together
Most contractors treat roofing and solar as separate products sold separately. Green Conception treats them as one building system. In Millbrae's fog belt, that approach changes what gets specified, how it gets installed, and how long it lasts.
"In Millbrae I've seen too many solar installs go on roofs that had maybe three years left. We fix the roof first - that's not upselling, that's just not setting the homeowner up for a second expensive project in 2027."
— Nick K. · Founder
San Mateo (94401)
Burlingame (94010)
Hillsborough (94010)
Pacifica (94044)
Green Conception Serving Millbrae, CA - ZIP 94030
Green Conception works throughout Millbrae's residential neighborhoods - from the hillside homes above Skyline Drive to the flat streets near Millbrae Avenue and the older ranch-style blocks in 94030 that were built before modern energy codes existed. Most of the housing stock here is 50-plus years old, which means roofs and electrical panels that weren't designed for solar. We've handled both scopes in this ZIP and know what San Mateo County inspectors look for on combined permit applications. Call for a free inspection and written quote. No deposit.
San Bruno (94066)
— Common questions
Common Questions About Solar and Roofing in Millbrae, CA
Do I need a new roof before installing solar?
Not always, but you should know your roof's condition before panels go on. Green Conception inspects the roof free of charge before any solar quote. If the roof has less than 10 years of life left in 94030's fog conditions, replacing it first saves money over the system's life.
How long does a combined project take in Millbrae?
Most combined roofing and solar projects in 94030 run 3-5 days of active work after the permit is issued. San Mateo County permit processing typically adds 3-5 business days before work begins. Total calendar time from signed contract to energized system is usually 3-4 weeks.
What permits are required in San Mateo County?
San Mateo County requires separate building permits for roofing and solar, but they can be filed together as a combined application. Green Conception handles both submissions. Plan check typically takes 3-5 business days. A city inspection closes out both scopes at project completion.
Will PG&E rates affect my solar payback timeline?
Yes, significantly. PG&E's residential rates in Millbrae are among the highest in California, which shortens solar payback periods. Higher the rate you're offsetting, faster the system pays for itself. Most 94030 homeowners see payback estimates in the 6-9 year range depending on system size.
Does fog in Millbrae reduce solar production?
Fog does reduce daily peak sun hours compared to inland California cities. Green Conception accounts for Millbrae's marine microclimate when sizing systems - we don't use Central Valley averages. A properly sized bay area array still produces strong annual output and meaningful PG&E bill reduction.
What roofing materials work best with solar panels?
Composition shingles are the most solar-compatible roofing material for 94030 homes. They're racking-friendly, widely available, and carry long manufacturer warranties. Tile works well too but adds racking complexity. Green Conception recommends materials based on your specific roof pitch, load rating, and HOA rules if applicable.
Is there a deposit required to get started?
No deposit is required from Green Conception before work begins. You'll receive a written no-obligation estimate, a signed contract, and a pulled permit before any payment is requested. That's a hard policy, not a promotional offer. No money should change hands before a permit exists in San Mateo County.
How does the Best One Stop Solar and Roofing Service work?
The Best One Stop Solar and Roofing Service means one company handles roof replacement and solar installation under a single contract, permit package, and warranty. Green Conception coordinates both scopes so Millbrae homeowners in 94030 never manage two contractors, two schedules, or two warranty disputes at once.


