Best Realtors in Yorkville, CA (2026 Guide)
By Matthew Martinez
Yorkville is a small unincorporated ranching community on Highway 128 at the southern end of Anderson Valley, between Cloverdale and Boonville in Mendocino County. There is no town center to speak of: the market is ranch land, vineyard parcels and homes on acreage in the hills, and the agents who name Yorkville mostly work from Boonville and Ukiah.
This guide is published by Diamond Real Estate Group, one of the brokerages listed. Our broker is listed first; other agents are in alphabetical order. The order is not a ranking, and inclusion is not an endorsement.
How we chose the agents in this guide
Each agent below met three checks in October 2026:
- A current California license. We opened each agent’s record on the California Department of Real Estate (DRE) public lookup and confirmed the name, license type (salesperson or broker), a "Licensed" status, and a responsible broker that matches the brokerage on the agent’s profile.
- A named brokerage. Each agent’s DRE record shows the brokerage they work under.
- A public page that names Yorkville. We opened each agent’s profile or brokerage site and confirmed it names Yorkville, through a current or recent Yorkville listing or a brokerage service-area statement.
We did not rank agents, and we did not consider sales volume, reviews or awards. Licenses and affiliations change, so check the license yourself before you sign anything, and interview more than one agent.
Few agent pages name Yorkville, so this list is short. For two agents at North Country Real Estate, it is the brokerage’s website, not the agent’s own bio, that names Yorkville as a service area; the table says so.
Yorkville housing in numbers
The Census Bureau does not publish a separate profile for Yorkville, so the figures below are for Mendocino County as a whole.
| Measure (U.S. Census QuickFacts) | Mendocino County |
|---|---|
| Population, July 1, 2025 estimate | 88,122 |
| Median value of owner-occupied homes, 2020–2024 | $512,200 |
| Owner-occupied housing rate, 2020–2024 | 61.7% |
| Median gross rent, 2020–2024 | $1,317 |
| Median household income, 2020–2024 (2024 dollars) | $68,092 |
| Mean travel time to work, 2020–2024 | 21.5 minutes |
Source: U.S. Census QuickFacts, Mendocino County.
A county median tells you little about a Yorkville ranch, where acreage, water, vineyard plantings and access drive the price. Ask an agent for recent closed sales of similar parcels in Anderson Valley and the Cloverdale side of the county line.
Ranch land, vineyards and Highway 128
Yorkville has no city government, so Mendocino County handles zoning and permits. Most parcels are large rural holdings off Highway 128 and the ranch roads that branch from it, with grazing land, oak woodland, some planted vineyards and homes set well back from the highway. The Yorkville Highlands are known for wine grapes; for vineyard purchases, see our Mendocino County vineyards page. Our Yorkville real estate guide covers private roads and site access, rural water and wastewater and the ownership budget for acreage.
Costs and rules specific to a Yorkville purchase
- Transfer tax. Yorkville is unincorporated, so no city transfer tax applies. Fidelity National Financial’s title guide (Who Pays What, rev. January 2026) lists Mendocino County’s documentary transfer tax at $1.10 per $1,000, customarily paid by the seller: about $1,100 on a $1 million ranch sale. The County Recorder collects the tax but does not post the rate, so confirm it on your escrow estimate. Our California transfer tax guide explains who usually pays.
- ADUs and septic. The County’s ADU page bars ADUs on a septic leach field or its replacement area, so locate the leach field before you plan a second unit.
- Fire hazard and insurance. Look up the address on the State Fire Marshal’s Fire Hazard Severity Zone maps, read the natural hazard disclosure report, and get an insurance quote early. In High or Very High zones, see our AB 38 defensible space guide.
- Water. Ask what serves the parcel (wells, springs or ponds), whether there are recorded water rights or pond permits, and get a well yield test.
- Access. Many parcels are reached by shared ranch roads; ask for a recorded easement and road maintenance agreement.
Yorkville agents with verified licenses
Matthew Martinez, Diamond Real Estate Group (publisher of this guide)
Matthew Martinez is the Founder, CEO and Managing Broker of Diamond Real Estate Group. He is based in Sonoma County; contact him to discuss a purchase or sale in Yorkville. Contact Matthew · Broker #01869679 · Diamond Group Estates Inc DBA Diamond Real Estate Group, DRE #02163490
| Agent | Brokerage | License | Areas named on profile |
|---|---|---|---|
| Cheryl Dumont | CENTURY 21 Kobetz Realty, Ukiah | Salesperson #02129929 | Yorkville, Boonville, Gualala (listings); Ukiah office |
| Anne Fashauer (licensed as Anne Lorraine Fashauer) | North Country Real Estate, Boonville | Broker #01841891 | Anderson Valley, Boonville, Philo (bio); brokerage site names Yorkville |
| Sheri Hansen | Rancheria Realty, Boonville | Salesperson #01292144 | Yorkville, Philo, Boonville, Navarro (sales) |
| Josh Mathias (licensed as Joshua Caleb Mathias) | Rancheria Realty, Boonville | Broker #02038940 | Yorkville, Philo, Boonville, Navarro (listings and sales) |
| David Starkey (licensed as David Lester Starkey) | North Country Real Estate, Boonville | Salesperson #01901654 | Anderson Valley (bio); brokerage site names Yorkville |
On the DRE record, Rancheria Realty is a business name of broker Joshua Caleb Mathias, who is Sheri Hansen’s responsible broker; North Country Real Estate is a business name of broker Anne Lorraine Fashauer, who is David Starkey’s responsible broker; and CENTURY 21 Kobetz Realty agents are licensed under Kobetz Realty, Inc. (DRE #02130965). The North Country Real Estate home page lists Boonville, Philo, Yorkville and Navarro as its coverage area.
How to vet a Yorkville agent
- Ask about ranch and vineyard sales. Ask how many acreage sales the agent has handled in Anderson Valley and what they look for in water, access and zoning.
- Confirm water before you write an offer. Ask for well logs, yield tests and any water rights, pond or spring documentation.
- Walk the access route. Ask for the recorded easement and road maintenance agreement, and drive the road in wet weather if you can.
- Ask about Williamson Act or ag contracts. Some ranch land is under agricultural preserve contracts that limit use and affect taxes; ask the agent to check the title report.
- Get fire insurance quotes early. Ask which carriers are writing policies for remote properties and build the premium into your budget.
- Check the license yourself. Confirm a "Licensed" status with a current broker on the DRE lookup.
Yorkville questions we hear
Is there a city transfer tax in Yorkville?
No. Yorkville is unincorporated, so only the Mendocino County tax applies, listed at $1.10 per $1,000 in Fidelity National Financial’s 2026 guide.
Who handles permits in Yorkville?
Mendocino County Planning and Building Services.
Why is this list so short?
Only a handful of agent pages we checked name Yorkville. Agents who list Anderson Valley or nearby Boonville may also work here; see our Philo and Navarro guides.
Is there Census data for Yorkville?
Not as a separate place. We show Mendocino County figures, which blend coastal, valley and inland markets.
Sources & notes
- California DRE public license lookup (individual records linked in the table)
- U.S. Census QuickFacts, Mendocino County (population estimate July 1, 2025; other figures 2020–2024)
- Fidelity National Financial, Who Pays What: California Transfer Tax and Fees (rev. January 2026)
- Mendocino County Recorder
- Mendocino County, Accessory Dwelling Units
- CAL FIRE Office of the State Fire Marshal, Fire Hazard Severity Zones
- North Country Real Estate and its agent page; agent profiles on homes.com and century21.com, linked in the table
- License records checked October 2026 on the California DRE public lookup. Last reviewed October 2026 by Matthew Martinez.
Nearby agent guides: Philo · Navarro · Hopland
Related: Yorkville real estate guide · Yorkville home valuation · Mendocino County agents guide · 20 tips for choosing a real estate agent
License-status update: the linked California DRE public records were checked November 2, 2026 and showed "Licensed." Public profile research retains the dates stated above. Names on DRE records may differ from public profile names; verify status and brokerage before selecting an agent.
