Verified scope: Stardew Valley Expanded and Grandpa's Farm 1.15.11.

This mechanic belongs only to the optional Grandpa's Farm Standard Farm replacement. It is not a general expansion for Immersive Farm 2 Remastered, Frontier Farm, Grampleton Fields, or vanilla farm maps.

1. Check offer-event eligibility

The normal source gate is j 268, implemented as DaysPlayed > 268 and first met on Year 3 Summer 17. The fast-track gate removes that date requirement but needs the late-game Movie Theater, Railroad boulder, and Island Resort milestones; Joja also needs event 502261.

2. Track the Property Deed chain

Exact route records

Step	Community Center	Joja
Route completion record	Event 191393	Morris townhouse event 6663408
Ledger introduction	Event 8033859	Event 9033859
Ledger location	Lewis's Manor House, map tile 1,7	JojaMart bookshelf patch, map tile 25,25
Delivery target	Lewis	Morris
Final event window	Farm, 6:00 AM–11:00 AM	Farm, 6:00 AM–10:00 AM

The final land patch covers a 26-by-42-tile map region beginning at farm coordinate 110,33. That is a patch rectangle, not a claim that all 1,092 tiles are tillable. Pond/no-pond and dirt/grass settings select one of four variants.