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Design and build, under one roof

Landscape Design in Sonoma, CA, Rooted in a Historic Wine Town

Sonoma grew up around its Plaza and its missions, a small town with deep roots and homes to match, from adobe-era streets to vineyard estates on the edges. Keystone Yards designs and builds across the area with one crew, and Owen walks each property himself before quoting, so a home with this much history behind it gets a plan that honors its setting rather than one pulled off a shelf.

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Designing for a Town With This Much History

Sonoma carries more history per block than almost anywhere in the region, and its properties reflect it. Near the Plaza you find older, established homes on settled lots, some dating back generations, while the roads out toward the vineyards open into estate and wine-country parcels. The work here leans toward respecting what's already there, reading an established property, deciding what to keep, and building outdoor space that feels like it belongs to a home with a past.

The setting raises the bar as much as the history does. This is a town that draws people for its character and its wine country, and the yards are expected to carry that same sense of place, so the detailing and planting have to feel considered rather than generic. Keystone Yards keeps design and construction under one team, so the read on a historic or estate property carries straight through to the crew that builds it, with nothing lost in a handoff.

Set at the head of Sonoma Valley with the Plaza at its center, the town pairs storied older homes with vineyard estates and a warm inland climate. Because each property carries its own history and setting, Keystone Yards scopes every Sonoma project on its own reading of the land rather than a countywide assumption.

Covered patio with pergola lighting, outdoor sofa, dining table, and pool at dusk
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Wood fence with a cedar trellis frame and wire grid panels for climbing vines, bordering a gravel path and stone-edged planting bed, built by Keystone Yards.
— SERVICES

New structures on a historic property have to sit right beside what's already there, and carpentry delivers the decks, pergolas, gazebos, and fencing built to complement an older Sonoma home or a vineyard estate rather than clash with it. The materials and craftsmanship are chosen to hold up through the warm valley summers and to match the character the setting calls for.

— SERVICES

Whether it's refreshing dated hardscape near the Plaza or laying refined patios on an estate, masonry brings the patios, fire features, outdoor kitchens, and stone walkways that give a yard its form. Each layout is worked around mature trees, settled grade, and the property's history, so the stonework belongs to the setting instead of fighting it.

Backyard patio by Keystone Yards with black Adirondack chairs around a round fire pit, a wicker sectional under a shade umbrella, and an outdoor kitchen counter, with mountain views beyond the fence.
Aerial view of a modern backyard by Keystone Yards with geometric concrete-and-gravel patios, raised white planter beds, a metal garden arbor, and rows of rose planting beds in mulch.
— SERVICES

Bringing a historic or estate yard to life without stripping its character takes a careful hand, and landscaping covers the planting, grading, and drainage that do it, worked to suit both the home and the wine-country surroundings. Selections match the warm Sonoma Valley climate, so new planting thrives beside whatever is already established on the property.

Those three carry most Sonoma projects, though they aren't the whole roster. When a job reaches past them, the full range of services shows every trade the team keeps in-house.

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Four Keystone Yards crew members in matching gray branded hoodies and caps, standing together on the job site holding a tape measure and grade rod.
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What a Sonoma Homeowner Gets From This Team

Doing right by a property with this much history takes a designer who reads the home and its setting as carefully as the lot, and that only happens in person. Owen walks every Sonoma property himself, taking in the era of the home, the mature landscaping, and the wine-country setting, so the estimate and the plan suit your actual property rather than a countywide average.

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  • Designs built for newer subdivisions and unfinished builder-grade yards, not a generic renovation template
  • Owen visits every property in person before writing an estimate
  • The same team handles design and construction, with no handoff to a separate crew
  • Every project comes with a 2-year workmanship guarantee in writing
  • Materials chosen to hold up against bay wind and wetland-edge moisture
  • Free estimates based on your actual property, not a phone quote
  • Five-star ratings across Google, Yelp, and Facebook, plus BBB accreditation and Houzz
  • One team covers every trade your project needs, not just the planting
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Before and After: The Change on Real Sonoma Properties

Nothing here is a rendering or a stock photo. Each pairing is a real Sonoma project, the property as the crew found it beside the finished result it became. Scroll through and see how a historic or estate yard can be renewed while keeping the character that makes it what it is.

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— Process

The Five Stages of a Sonoma Build

Whether the property is a historic Plaza-area home or a vineyard estate, every Sonoma job runs the same course:

01. Tell Us About the Property

Reach out by phone or the contact form, and Owen follows up to hear the project and understand the home and setting you're working with.

02. Owen Walks the Property in Person

He reads the mature landscaping, the grade, the drainage, and the character of the home before the design points anywhere, since a historic property shapes what fits.

03. A Plan That Honors the Setting

You review a design and 3D concept drawn around your property's real conditions and its history, and nothing gets scheduled until you sign off.

04. Permits Pulled, Trades Lined Up

Once you approve the design, Owen orders the trades and pulls the permits, so demolition, hardscape, and planting arrive in the right order on an established property.

05. Built and Walked With You

After the crew finishes, they take you through the completed yard in person, and that walkthrough is where your 2-year workmanship guarantee begins.

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Trusted on Sonoma's Storied Properties

The five-star ratings across Google, Yelp, and Facebook, the BBB accreditation, the Houzz profile, all of it was earned rather than advertised. In Sonoma that means historic homes and wine-country estates where new work has to honor the character already there, and it's a big part of why homeowners here hand the company their properties.

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before and after video

What Two Photos Leave Out

A before shot and an after shot give you the ends and skip the middle. Video carries it, the careful work, the rebuild, the yard coming together around a home with history, so you can watch a storied property renewed rather than just seeing its final frame.

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Five Keystone Yards crew members standing together on a paver walkway job site, wearing branded work shirts and hoodies.

— About us

The Company Behind the Build

Keystone Yards operates as Keystone Building Inc., licensed in California under #1078372 for General Building and C27 Landscaping, and serves the town of Sonoma as part of its Sonoma County work. Owen reads each property in person before quoting for a reason: on a historic or estate property, a real plan comes from studying the home and its setting, not from a countywide average stretched to cover it.

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Planning

Where the Drawing Becomes the Yard

Each project begins as a flat 2D layout and then gets built into a full 3D model, so you can see how new work will sit beside a historic home or across an estate before any ground is broken. Approve that model and it becomes the crew's reference through the work. What you walk out onto at the end is the plan realized, not a rough approximation of it.

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— 3d design —

Seeing the Result Before Work Starts

There's no flat drawing here left to your imagination. Each design is modeled in three dimensions ahead of the first day on site, and the samples you'll see come from real projects across the wine country and North Bay the company builds, so what's in front of you shows the genuine planning a property gets before any work begins.

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— WARRANTY

A Written 2-Year Guarantee on Every Sonoma Build

Everything built on your Sonoma property carries the same written 2-year workmanship guarantee that stands behind every job the company takes. If something isn't right within that window, Owen comes back and handles it himself.

The terms hold regardless of the property. A single patio behind a historic home and a full estate build are covered the same way, with no separate policy for older houses and no fine print carving out exceptions. If a fence weathers unevenly, a paver settles, or new plantings struggle in the valley heat, the crew that built it is the one that returns, never an outside subcontractor brought in later.

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Recent Sonoma Projects

Look through finished Keystone Yards work in and around the town of Sonoma, from renewed historic yards and patios to full grounds builds on the wine-country estates the area is known for.

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Five Keystone Yards crew members in matching gray branded hoodies standing on a job site beside stacked lumber and knee pads.
— PROUDLY LOCAL

Reading a Historic Sonoma Property Before Drawing a Plan

The town of Sonoma sits at the head of Sonoma Valley, built around the largest town plaza in California and the mission that gives the area its place in the state's history. Residents get the Plaza itself, the historic buildings around it, and the vineyards spreading out from town, all under the warm, dry summers of the inland valley. It's a storied, wine-country way of living that draws people who value character and heritage, and nearly every one of those properties comes with a history a blank-slate plan would erase.

That's the crux: a design drawn for a new tract lot doesn't fit a historic Sonoma home or a wine-country estate. The age of the property, mature trees, settled grade, and the setting all have to be read and respected, and the new work has to feel like it belongs. Keystone Yards designs around those realities rather than imposing a generic look, which is why a Sonoma plan looks nothing like one drawn for an ordinary lot.

The properties here skew older and higher-value, historic homes near the Plaza and estates out among the vines, many lived on for generations. So the work tends to mean honoring the character of the property, renewing mature grounds, and building to suit the setting, not filling an empty yard. That's why an estimate on one of these properties is built from the specific, storied land it covers rather than a fixed starting point.

— FAQ

Common Questions About Landscape Design in Sonoma

Landscape design process and professional landscaping services by Keystone Yards in Napa, CA.
My home near the Plaza is historic. Will the design respect that?
My place is a vineyard estate outside town. Do you handle that too?
Will new plants sit well beside my mature landscaping?
My hardscape is old and dated. Do you replace it?
How long does a Sonoma project take?
Do you handle the permits?
Do you serve the areas around the town of Sonoma too?
What does the 2-year guarantee cover?
Can I check your license before committing?
How do I get started?
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Start Your Sonoma Project With One Call

Reach out to Keystone Yards for a landscape design and build shaped to your Sonoma property, its history, and the wine-country setting around it, never a template off the shelf.

Keystone Yards is a Napa-based design-build company serving homeowners across Napa, Sonoma, Marin, Solano, Contra Costa, Santa Clara, San Mateo, & Alameda. Owen Lynn personally visits every site and every project comes with a 2-year workmanship guarantee, in writing.

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