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$450,000 Just Listed

  • For Sale
  • Active
  • Residential Lots
  • 0.202 Acres
  • Updated 2 days ago
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Located in the heart of Sonoma, 18446 1st Avenue offers over 8,000 square feet of opportunity in a desirable Wine Country setting. The spacious lot features separate alley access, allowing for the potential to build both a main residence and an ADU with independent entry. Set in an established neighborhood near local shops and the historic Sonoma Plaza, this property combines size, flexibility, and locationready for your vision to take shape.

Full Property Details for 18446 1st Ave

General

  • Price: $450,000
  • Status: Active
  • Type: Residential Lots
  • Source: BAREIS
  • MLS ID: 326014492
  • Updated: 2/28/2026
  • Added to Site: 2 day(s) ago

Location

  • Driving Directions: Follow CA-12 W to E Thomson Ave, Right on Thomson, Left on 1st Ave., Property is on the left

Utilities

  • Sewer: Public Sewer
  • Water: Public
  • Utility Description: Natural Gas Available, Public, Sewer Available, Water Available

Structural Information

  • Current Bldg. Use: Vacant

Lot Features

  • Lot Size (Acres): 0.202
  • Lot Size (Sq. Ft.): 8,799
  • Street/Road Desc.: Paved
  • Potential Use: Residential, Single Family
  • Zoning: Single-Family
  • Lot Description: Other
  • Fencing (Description): Partial

Disclosures and Reports

  • Special Conditions: None

Listing provided by Guide Real Estate, Cliff Bell and Guide Real Estate, Ian Zopolos

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Listing agents

— 18446 1st Ave —

  • Cliff Bell

    Guide Real Estate

  • Ian Zopolos

    Guide Real Estate

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Schools serving 18446 1st Ave

School District:Sonoma Valley Unified School District
NameGradesDistance
Flowery Elementary School
17600 Sonoma Highway, Sonoma, CA 95476
K-50.7 mi
Adele Harrison Middle School
1150 BRd.way, Sonoma, CA 95476
6-82.4 mi
Sonoma Valley High School
20000 BRd.way, Sonoma, CA 95476
9-122.2 mi
Disclaimer: School attendance boundaries provided by Pitney Bowes and are for reference only. Contact the school directly to verify enrollment eligibility.

Estimate the Cost for 18446 1st Ave

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Down Payment
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*These costs are estimates, and the interest rates assume exceptional credit standing.

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Listing provided by Guide Real Estate, Cliff Bell and Guide Real Estate, Ian Zopolos

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18446 1st Avenue, Sonoma, CA 95476 (MLS# 326014492) is a Residential Lots property with a lot size of 0.2020 acres. 18446 1st Avenue is currently listed for $450,000 and was received on February 28, 2026. Want to learn more about 18446 1st Avenue? Do you have questions about finding other Residential Lots real estate for sale in Sonoma? You can browse all Sonoma real estate or contact a Coldwell Banker agent to request more information.

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