How This Design-Build Company in Napa Got Started
Keystone Yards operates as Keystone Building Inc., holding CA License #1078372 for General Building and C27 Landscaping. The company has served homeowners across Napa, Contra Costa, Marin, Sonoma, Solano, Santa Clara, San Mateo, and Alameda counties for 8 years, working on projects that range from small patio upgrades to full backyard transformations covering carpentry, masonry, landscaping, electrical, and plumbing under one roof.
Keystone Yards started out taking on individual landscaping jobs around Napa Valley, the kind of projects most homeowners hire a single trade for. As more of those homeowners started asking for help with the design side too, and then the carpentry, masonry, and electrical work that goes along with a full yard, the company grew into the design-build model it runs on today. Instead of bringing in separate contractors for each piece, one team now handles the whole project, which is the same structure Owen builds every estimate around.
Meet Owen Lynn, the Owner
Owen Lynn owns and runs Keystone Yards. He visits every site himself and writes every estimate personally, so the person who walks your property is the same person who oversees the project from design through the final walkthrough. There's no sales team standing between you and the person actually responsible for the work, and no handoff to a project manager you've never met once the contract is signed.
That structure shapes how estimates get built too. Because Owen sees every yard in person before writing a number, an estimate reflects your actual property, its slope, its soil, its existing structures, rather than a rough square-footage calculation done from a phone call. If something about your project changes mid-way, you're talking to the same person who can actually make that call, not submitting a request that has to work its way up a chain.
Owen also works directly with homeowners who come in with plans from an outside designer or architect already in hand. In those cases, Keystone Yards steps in as the build partner, handling construction while keeping the original design intact, rather than insisting every project start from scratch with its own in-house design.
What Keystone Yards Stands For
Keystone Yards runs on a simple model: one team handles design and construction, and every project carries a 2-year workmanship guarantee in writing rather than a verbal promise.
That model exists for a specific reason. A yard that's designed by one company and built by another usually means something gets lost in the handoff, a detail in the plan that doesn't survive construction, or a change that never makes it back to the original designer. Keystone Yards is built to close that gap: the person who designs your project is on the same team as the person who builds it, so what you approve on paper is what actually goes into the ground.
How Keystone Yards Operates
Every project comes with a 2-year workmanship guarantee in writing, not a verbal assurance you're supposed to take on faith. Keystone Yards only takes on design-build projects for homeowners, not HOA contracts or lawn maintenance work that would split attention across dozens of properties at once. That focus is deliberate: fewer, larger projects done right, rather than a high volume of quick maintenance stops.
The same logic applies to how trades are handled. Carpentry, masonry, landscaping, electrical, and plumbing all fall under one company, coordinated by one point of contact, instead of you managing separate hires and separate schedules for each phase of the work. A delay in one trade doesn't turn into a scheduling standoff between three different companies who don't answer to each other.
Keystone Yards also isn't built around small, one-off repairs like patching a single paver or fixing a fence board. The company is set up for whole-yard, higher-end transformations, and the size of the crew, the scheduling, and the estimate process all reflect that focus rather than trying to serve every job size at once.
Licensed, Accredited, and Based in Napa
Keystone Yards is Google Verified and holds five-star ratings on Yelp, backed by Better Business Bureau accreditation and a Houzz profile. That trust footprint is built entirely from real projects across Napa, Contra Costa, and Marin counties, not paid placement or self-reported numbers.
What Keystone Yards Builds in Napa Valley
Keystone Yards handles six services under one roof, so a single team manages every trade your project needs, from the first sketch to the final walkthrough:
Custom plans and 3D concepts before any construction begins.
Decks, pergolas, fences, and gazebos built for Napa's climate
Pavers, fire pits, outdoor kitchens, and stonework for patios and walkways.
Planting, sod, grading, and site demolition.
Why Homeowners Keep Coming Back to Keystone Yards
Here's what keeps homeowners coming back to Keystone Yards after the first project wraps:
What Happens When You Call Keystone Yards
Every project with Keystone Yards follows the same five steps, from your first call to the final walkthrough:
01. You Reach Out
You call or fill out the contact form, and Owen follows up directly, not a scheduling assistant.
02. Owen Visits in Person
He walks your property and talks through what's realistic for the space, including a rough budget range, before any paperwork happens.
03. You See the Full Design
You get a complete design, including a 3D concept, so you can see the finished yard before signing anything or breaking ground.
04. Construction Gets Scheduled
Once you approve the design, construction gets a clear timeline and payment plan, so nothing about what happens next is vague.
05. Owen Walks It With You
When the project wraps, Owen walks the finished yard with you in person, and your 2-year workmanship guarantee starts that same day.
A Design-Build Company in Napa That Homeowners Vouch For
Keystone Yards holds five-star ratings on Google, Yelp, and Facebook, along with Better Business Bureau accreditation and a Houzz profile. Those ratings come from homeowners across Napa, Contra Costa, Marin, Sonoma, Solano, Santa Clara, San Mateo, and Alameda counties who hired Owen directly and worked with him through the entire project, not a rotating account manager.
See Our Napa Valley Landscape Design Projects
Browse completed landscape design and build projects across Napa Valley, from full backyard renovations to a single patio and fire pit. You'll find hillside builds, vineyard-adjacent yards, and flat suburban lots side by side, since the terrain shifts a lot across Napa, Sonoma, Marin, Solano, and Contra Costa counties and the right approach depends on which one you're starting with.
Frequently Asked Questions About Keystone Yards
Ready to Talk to Owen About Your Project?
Reach out to Keystone Yards to start your landscape design and build project in Napa, CA.
