
Custom Home Building
From an empty lot to the home you have been planning — built from the ground up with code-first construction, quality materials, and one contractor managing every trade.
Your Home, Built from the Ground Up
Building a custom home is the biggest construction project most people will ever take on. At Keystone Building Services, we handle every phase of new construction — from site preparation and foundation work through framing, roofing, electrical, plumbing, HVAC, insulation, drywall, flooring, cabinetry, painting, and the final walkthrough. One contractor manages every trade, every permit, and every inspection from start to finish.
Owner Gerardo Diaz is a licensed electrician with over 11 years of hands-on construction experience. That means the most critical system in your new home — the electrical — is designed and installed in-house by someone who knows the National Electrical Code inside and out. Panel sizing, circuit layout, dedicated appliance circuits, lighting design, low-voltage wiring for smart home systems — all handled with expert precision, not farmed out to whoever is available.
New construction is where Gerardo Diaz's code-first approach matters most. When you are building from scratch, every decision compounds. The right foundation supports the right framing, which supports the right roofline. Electrical and plumbing are roughed in before walls close, so nothing gets missed or patched later. We use quality materials, build to code, and do not take shortcuts — because a new home should last for generations, not just pass inspection.
Complete Home Build — Hemenway St
A custom home built from the ground up in Winters, CA. From foundation and framing through electrical, plumbing, interior finishing, and landscaping — Keystone managed every phase of this complete residential build.





The Build Process
Design Coordination
We work with your architect and designers to translate plans into a buildable scope. Gerardo reviews every detail — structural feasibility, electrical layout, plumbing routing, and material selections — before a single shovel hits the ground.
Site Preparation
Grading, excavation, utility connections, and all site work to prepare your lot for construction. We handle permits, soil testing coordination, and ensure the site is ready for a solid foundation.
Foundation & Framing
Engineered foundation systems poured to spec, followed by structural framing that defines your home. Every wall, beam, and connection point is built to code and inspected before we move forward.
Electrical & Plumbing
This is where Gerardo's licensed electrician background sets Keystone apart. All electrical rough-in — panel sizing, circuit layout, low-voltage wiring — is handled in-house with expert precision. Plumbing and HVAC are coordinated alongside to keep the build on schedule.
Interior Finishing
Insulation, drywall, flooring, cabinetry, countertops, tile, paint, and trim — every interior finish is installed with care. We coordinate material deliveries and trade scheduling so nothing stalls the timeline.
Final Inspection & Walkthrough
Every system is tested, every surface is checked, and every inspection is passed before you get the keys. We walk through the entire home with you, address any punch-list items, and make sure everything meets our standard — and yours.
Full-Scope New Construction
New Construction FAQs
New Construction Projects

Complete Home Build — Hemenway St
Winters, CA

Custom Staircase
Sacramento, CA

Aerial View — New Construction
Winters, CA

Aerial Overhead View
Winters, CA
Ready to Build Your Dream Home?
Get a free, no-obligation estimate for your custom home build. Call us today or fill out our quick online form.