Knob & Tube Replacement in San Francisco and the Bay Area
Knob and tube wiring is one of the top reasons California insurers cancel, decline, or refuse to renew a homeowners policy, and it can stop a sale at the closing table. We replace it and document the work so your property keeps its coverage.
Knob and tube wiring is one of the top reasons California insurers cancel, decline, or refuse to renew a homeowners policy, and it can stop a sale at the closing table. Global Building Solutions replaces knob and tube wiring and outdated panels across the San Francisco Bay Area, then documents the work so your property passes inspection and keeps its coverage. One licensed team handles the whole job, from permits to paint. Every project is executed under Global Building Solutions Management, Inc..
Pre-1950 wiring insurers treat as a fire risk
Knob and tube is the ungrounded wiring standard used in most homes built before 1950. No ground wire, insulation that degrades with age, and never designed for modern loads. Insurers treat it as a fire risk, along with outdated panels like Zinsco and Federal Pacific and ungrounded two-prong outlets.
Who this is for
Homeowners with an older Bay Area home who got a non-renewal or cancellation notice; buyers and sellers mid-escrow; real estate agents; property managers and multifamily owners.
What is included
Assessment against your insurer's requirements, permits, complete rewiring and panel or subpanel upgrades, patching and paint, final inspection, and the documentation your carrier needs. From permits to paint, one team.
Why it matters
A cancellation notice or a failed inspection can stall a renewal, jeopardize a mortgage, and collapse a sale. We work inside your carrier's window and your escrow timeline.
Related: Service Upgrades & Panels and Insurance-Cancellation Work.
How it works
Assessment and insurance alignment
Full-scope replacement, managed for you
Insurance approval and documentation
From risk to revenue
We turn the chaos of denied insurance and failed inspections into a repeatable, documented process, so a property becomes compliant, insurable, and ready to close, without you coordinating an electrician, a drywaller, and a painter separately.
Systematized risk resolution
Insurance disqualifiers, like outdated wiring, missing bonding, or panel violations, are mapped into pre-approved scopes with documentation-ready outputs your carrier can accept.
Self-inspection technology
Submit property details, photos, and permit history online. Our platform generates a compliant scope, pricing, and timeline, often without an in-person visit.
Managed execution
One coordinated team runs the whole job, from permits to paint, keeping the work on your carrier's timeline and your escrow deadline.
What we offer
Full-service knob and tube replacement with permit-ready documentation, turnkey scope and execution for homeowners, realtors, and investors, and insurance-approved upgrades that enable policy issuance or renewal, fast enough to keep a transaction alive.
Questions
Does knob and tube wiring have to be replaced to get home insurance in California?
In most cases, yes. California carriers routinely refuse to write or renew a policy on a home with active knob and tube wiring, and many require it replaced as a condition of coverage.
How much does knob and tube replacement cost in the Bay Area?
It depends on home size, circuits and outlets, panel condition, and access. Tell us about the property and we will give you a clear, line-item quote.
How long does it take?
It varies with size and complexity, and because this is often tied to a deadline, we schedule around your timeline.
Do I have to move out during rewiring?
Not always. Many projects are completed while owners stay in the home; larger jobs are scheduled to minimize disruption.
Can you work with my insurer or realtor?
Yes. We coordinate with carriers, agents, and realtors and provide permit-ready documentation.
What else gets flagged besides knob and tube?
Outdated panels like Zinsco and Federal Pacific, ungrounded outlets, and undersized service. See Service Upgrades & Panels.
Tell us about your property.
If you have a cancellation notice or a deal on the clock, we move fast.
CSLB #1095747
San Francisco Bay Area and beyond