A proposed change to Sun Square would provide 36 affordable homes and 7,900 square feet of office space at 425 Napa Junction Road in American Canyon. The city's September 2026 inventory lists the proposal, filed by Max Konan on May 12, with city comments on May 26.
Earlier applications for the same project
The project's first phase, a 5,781-square-foot mixed-use building, has been in permit review since March 2024. The city returned comments on it most recently on December 18, 2025. Site improvement plans for the same address have been in review since March 2024. These are older applications for the same project, not separate developments.
What we don't know
The proposal is not an approval. It does not show construction, completion or occupancy. The final scope and any decision are unverified. The list is from September.
How we know (3 sources)
Dated source evidence; the project may have changed since then. An approval does not establish construction or an opening.
Supporting source
A proposed change to Sun Square at 425 Napa Junction Road would provide 36 affordable homes and 7,900 square feet of office space, according to the city’s September 2026 inventory. It records the modification application on May 12 and comments on May 26. Separate, older building and site-improvement applications at the same address remain part of the project’s history; they are not separate new developments. The proposal does not establish approval, construction, completion or occupancy. This is the saved September snapshot; the PDF could not be refreshed, and the final scope and subsequent decision remain unverified.
American Canyon September 2026 development inventoryCity of American Canyon · pdf:p2:table1:r4; pdf:p6:table1:r2; pdf:p6:table1:r3
Evidence dated: Date not stated · Source checked: Oct 6, 2026
Owner-authorized agent evidence review under #24. Parent update is attributed and dated; current outcomes and forecasts are not inferred. No human reviewer impersonated.
Supporting source
A proposed change to Sun Square would provide 36 affordable homes and 7,900 square feet of office space. The site is at 425 Napa Junction Road in American Canyon. The city's September 2026 inventory lists the proposal, filed by Max Konan on May 12, with city comments on May 26.
The project's first phase, a 5,781-square-foot mixed-use building, has been in permit review since March 2024. The city returned comments on it most recently on December 18, 2025. Site improvement plans for the same address have been in review since March 2024.
These are older applications for the same project, not separate developments.
The proposal is not an approval. It does not show construction, completion or occupancy. The final scope and any decision are unverified. The list is from September.
American Canyon September 2026 development inventoryCity of American Canyon · pdf:p2:table1:r4; pdf:p6:table1:r2; pdf:p6:table1:r3
Evidence dated: Date not stated · Source checked: Oct 6, 2026
Owner-authorized agent editorial review (issue #120). The story was reorganized into sections and plain-language wording from this previously reviewed source. Added context sentences are supported by the supporting_source entries dated October 13, 2026.
Summary
A proposed change to Sun Square would provide 36 affordable homes and 7,900 square feet of office space at 425 Napa Junction Road in American Canyon. The city's September 2026 inventory lists the proposal, filed by Max Konan on May 12, with city comments on May 26.
## Earlier applications for the same project
The project's first phase, a 5,781-square-foot mixed-use building, has been in permit review since March 2024. The city returned comments on it most recently on December 18, 2025. Site improvement plans for the same address have been in review since March 2024. These are older applications for the same project, not separate developments.
## What we don't know
The proposal is not an approval. It does not show construction, completion or occupancy. The final scope and any decision are unverified. The list is from September.
American Canyon September 2026 development inventoryCity of American Canyon · pdf:p2:table1:r4; pdf:p6:table1:r2; pdf:p6:table1:r3
Evidence dated: Date not stated · Source checked: Oct 6, 2026
Owner-authorized agent editorial review (issue #120). The story was reorganized into sections and plain-language wording from this previously reviewed source. Added context sentences are supported by the supporting_source entries dated October 13, 2026.
