General Building Contractor
Whole-project delivery: additions, remodels, tenant improvements, ADUs, and ground-up structures. We carry the permit, run the schedule, coordinate the trades, and close out the inspections.
Licensed California Contractor Since 2007 · CSLB #900920
Built by the people who are licensed to build it.
Corvane Construction Group is a Northern California general contractor holding four CSLB classifications — general building, concrete, earthwork and paving, and plumbing. Most of what your project needs, we self-perform — fewer subcontractors, fewer handoffs, and one point of accountability.
- CSLB License
- #900920California State License Board
- Classifications
- B · C-8 · C-12 · C-36Four held under one license
- Licensed Since
- 2007Continuously licensed
- Coverage
- Bay AreaSan Mateo · Santa Clara · Alameda · Contra Costa
Capabilities
Four classifications under one license.
Many general contractors hold a B license and subcontract the rest. We hold the specialty classifications for the trades that drive schedule and cost, so the crew doing the work answers to the same license that signed your contract.
Plumbing
Full rough and finish plumbing, repipes, gas lines, drainage, fixture sets, and water heater systems — including tankless and hybrid heat-pump installs handled by our own plumbing crew.
Concrete
Footings, slabs, foundations, stem walls, flatwork, driveways, and structural repair. Formed, poured, and finished by our own crew.
Earthwork & Paving
Grading, excavation, trenching, site prep, and paving. The site work that has to be right before anything vertical goes up.
Also performed in-house
- ElectricalPerformed by our own staff electricians.
- Fire SprinklerA licensed fire sprinkler contractor on the team for commercial and residential systems.
- Demolition & Selective DemoInterior demo, demising walls, and commercial build-out prep.
- Hardscape & PaversDriveways, patios, walkways, retaining walls.
In the field
Our own crews run our pours. The people who form it, place it, and finish it work for us.
Who We Build For
Three kinds of clients, three different sets of expectations.
Homeowners
Additions, kitchen and bath remodels, ADUs, foundations, repipes, and water heater replacement. A written scope before any work begins, one point of contact throughout, and a jobsite left clean at the end of every day.
HOAs & Property Managers
Common-area repair, building envelope work, plumbing and drainage across multi-unit properties, and capital projects. Invoicing formatted to your submission requirements, certificates of insurance on file, and scope documentation ready for your board.
General Contractors & Brokers
We work as a subcontractor to general contractors and national retail brokers on commercial tenant improvements, demolition, and site work. Certificates and bond paperwork are turned around quickly, and our crews run on your schedule without supervision from your side.
How a Job Runs
Every project runs the same way.
Every Corvane project moves through the same six stages. You know which one you're in, and what happens next, from the first walk to the warranty.
Walk the job
We visit the property, review the existing conditions, and tell you what we see — including anything that will cost more later if it isn't addressed now.
Written scope & bid
A line-item scope in writing, with allowances called out and exclusions stated plainly. If it isn't on the page, it isn't in the price. We would rather settle that before the work starts than partway through.
Permits & scheduling
We pull the permits, handle plan-check corrections, coordinate inspections, and give you a start date we intend to keep.
Build
Daily site supervision, the same crew from start to finish, and a regular progress update so you are never left wondering where things stand.
Punch & closeout
We walk the finished work with you, complete the punch list, and hand over final inspection sign-offs and equipment warranty documentation.
One-year workmanship warranty
Every Corvane project carries a one-year warranty on workmanship. If something we built isn't right, we return and correct it.
Recent Work
Selected work.
Residential, commercial, and property-management projects across the Bay Area and Northern California.
Currently on site · September 2026
San Ramon residence
Excavation, drainage, and concrete work along the foundation and side yard of a two-story home, with the existing slate patio protected and tied back in. Started August 2026.
We post progress from this job as it happens.
Follow along on Instagram
Licensed, Bonded & Insured
The paperwork is ready before you ask for it.
Property managers and general contractors need current documentation before a job can start. Ours is kept current and sent the same day it is requested.
- CSLB License#900920 — B, C-8, C-12 and C-36 classifications
- InsuranceGeneral liability and workers' compensation; certificates and additional-insured endorsements issued on request
- BondingContractor's license bond on file; project bonds arranged as required
- WarrantyOne year on workmanship, on every project
- Payment TermsNet 30 standard for commercial and property management clients
- ReferencesAvailable on request, by project type
Most jobs don’t go bad because of the work. They go bad because nobody calls you back. From day one you’re on one thread with me, my partner, and the foreman — so you always know who’s coming and when.
Tyrone Medrano — Owner
Corvane Construction Group is owner-operated. The person who walks your job, writes your scope, and answers your call is the same person whose license is on the contract — licensed since 2007, with hands-on experience across plumbing, concrete, site work, and general building.
Contact
Tell us about the job.
Send the scope, the address, and your timeline. We will let you know whether it is a fit and schedule a site visit.
- Phone
- (650) 417-4004
- Office
4 W. 4th Ave, 6th Floor
San Mateo, CA 94402- Service Area
San Mateo, Santa Clara, Alameda and Contra Costa counties. Other Northern California locations considered for commercial and multi-site work.