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5 Beds
6 Baths
4,818 sqft

$5,650,000

645 William Cunningham Avenue, Sonoma CA, 95476

Price per sqft$1,172.69
Built in1998
Property size4,818 sqft
Property typeResidential

Overview

Active

Listed Sep 29, 2026

Updated 14h ago

This 4-bedroom, 4-bath main residence pairs period character with modern comfort. Craftsman details, timeless proportions, and a warm, livable floor plan carry throughout the approximately 4,818 sq ft main residence. The grounds are just as special. Mature landscaping surrounds the in-ground pool, creating a private setting for afternoons outdoors, entertaining, and relaxed Sonoma living. The 3-car garage includes a convenient shower room, ideal for pool days, gardening, or a quick post-workout rinse. Above the garage, an approximately 825 sq ft carriage house offers a simple, private escape for guests, a home office, or studio. Just five blocks from Sonoma Plaza, the property is close to boutiques, tasting rooms, Michelin-starred and acclaimed restaurants, and the heart of downtown Sonoma. With approximately 4,018 sq ft in the main house plus an additional 825 sq ft carriage house and a total of 6 full bathrooms, this is a rare opportunity to own a remarkable piece of Sonoma's architectural heritage.

$37,590/mo

Est. mortgage payment based on a $5,650,000 home price.

All estimates are provided by Luxury Presence for informational purposes only. Actual amounts may vary.

Additional information

MLS® ID
326082579

Interior Features

Bedrooms
5
Bathrooms
6
Fireplace
Yes
Cooling
Yes
Heating
Yes
Basement
No

Exterior Features

Lot Size
0.46 Acres

Other Property Details

Garage
Yes
Pool
Yes
55+/Senior Community
No

Listed by Mary A Ryan (02031683) with Engel & Volkers Sonoma

Listing Contact:  

All information deemed reliable but not guaranteed and should be independently verified. All properties are subject to prior sale, change or withdrawal. Neither listing broker(s) nor Lorene Campi shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. 

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