Keystone Pre-Check gives contractors and homeowners a thorough, trade-by-trade walkthrough ahead of your official inspection — structural, electrical, mechanical, plumbing, fire sprinkler, and fire protection — so you know what's coming before it costs you time or money.
Every Keystone Pre-Check walkthrough covers all major systems and structural elements — not just a quick look at the obvious items.
Framing connections, bracing, sizing, and structural elements checked against approved plans.
Panel work, wiring, grounding, and rough-in or finish electrical review.
HVAC installation, ducting, and equipment clearances and connections.
Rough plumbing — drain, waste, vent, supply, and fixture installations.
Sprinkler system layout, coverage, and installation review.
Fire-rated assemblies, separations, and life-safety systems.
Too often, the official inspection becomes the moment a contractor first learns what needs to change — after trades are already finished, costing real time and money to correct. Keystone gets involved earlier: before trades wrap up, or before your inspector arrives, so you know what's coming and can address it on your terms, not on inspection day.
We speak the language of every trade, the building department, homeowners, and general contractors alike — which means we can step in and mediate when communication breaks down between any of them, keeping the project moving instead of stuck.
Every walkthrough ends with a clear, written list of findings and next steps — not a vague verbal note, but something your crew can act on immediately.
Owner-builder consultations give homeowners managing their own project direct access to code guidance in plain language — what an inspector will look for, what to fix before they arrive, and what your corrections actually mean.
Keystone Pre-Check is built on more than a decade of combined field experience across residential and commercial construction. Our team holds ICC certification in residential, commercial, and fire inspection, and has performed thousands of inspections covering every trade — structural, electrical, mechanical, plumbing, and fire life-safety.
That background includes experience stepping in as interim building official, developing procedures that improved consistency and customer service, and working directly with contractors, homeowners, and design professionals to solve problems in the field. We bring that same standard to every walkthrough — thorough, code-fluent, and focused on helping your project move forward smoothly.
Beyond our own certifications, Keystone draws on a broader network of trade professionals built over years in the field — so when a project calls for a specialist's perspective, we know who to bring in.
Book a single walkthrough or consult, or ask about ongoing support for the life of your project.
A full trade-by-trade site visit before your official inspection.
Guidance on your project's code requirements, in plain language.
A phone or email session to walk through a correction or callout.
Walkthroughs at key milestones plus ongoing consults for your project's duration.
Tell us a little about your project, and we'll follow up to schedule a time.
Keystone Pre-Check
San Diego, CA
hello@keystonecda.com