1003 Charter Oak Avenue
ActiveSaint Helena, CA 94574
PRICED TO SELL WITH INSTANT EQUITY!!! Rare Napa Valley estate on 1.29 acres, under construction with $400K+ already invested and existing contractor mobilized for rapid completion. Buyer walks in with instant equity—appraised recently for $5.6M as is; projected ARV $8.375M. Shovel-ready contemporary compound features a 4,049 sf main residence and 406 sf guest house designed for seamless indoor/outdoor living: vaulted ceilings, floor-to-ceiling glass, reclaimed natural wood, stone accents, and handcrafted tile. Also includes a 1,377 sf detached garage and a 1,000 sf outdoor kitchen with climate-controlled wine room. Landscaped grounds offer a sculptural entry court, kidney-shaped pool, multi-use putting green/lawn, mature privacy plantings, and sweeping vineyard and estate views. ?? Value-Add Bonus: Property qualifies for a lot split under SB9, offering rare development upside and dual-lifestyle or income potential. Sold as-is; completion requires approximately $1.16M. Sustainable infrastructure is integrated with durable materials and efficient systems. Ideal for an investor, builder/developer, or build-to-suite end buyer seeking fast execution, trophy wine-country distinction, and unparalleled value creation—just minutes from Napa’s tasting corridor and regional transport.

1/20
1003 Charter Oak Avenue
$4,290,000
- 4 bedrooms
- 3 baths
- 4488 sq ft
- MLS# : OC25173221
- Built in 2025
Nearby schools
- Saint Helena Unified School District
Actual schools may vary. We recommend verifying with the local school district, the school assignment and enrollment process.
Map & directions
Mortgage rates & offers
Contact
FPO
MONICA VICTORINO
Copyright © 2025 California Regional Multiple Listing Service, Inc. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
Discover More Great Communities
Select additional listings for more information
By providing your name and contact information and clicking the I'm Interested! button, you consent and agree to receive marketing communications from NewHomeSource and the builder(s) selected above, including emails, calls or text messages using an automatic telephone dialing system or an artificial or prerecorded voice. Your agreement is not a condition to purchasing any property, goods or services, and you may call us instead of submitting the information online. You also acknowledge and agree that you can revoke your authorization at any time. Your consent herein also applies to any future registration on national or state Do-No-Call lists. For mobile phones, standard message and data charges apply. Consult our Privacy Policy for additional information, including unsubscribe options. You also agree to our Privacy Policy, including TCPA Policy and Terms of Use.
Way to Go!
An agent will be in contact soon!