The 344-acre Griffin Park development being annexed into Manteca from the rural area to the south is expected to yield up to 1,592 homes.Those homes, of which the first may be occupied by as early as 2020 if not sooner, will be protected primarily by the Manteca Fire Department given they would be inside the city limits even though the developers have agreed to pay an upfront lump sum payment of the next 10 years of property taxes with annual 5 percent increase built in to the Lathrop Manteca Fire District.The agreement is part of a San Joaquin Local Area Formation Commission requirement that the fire district’s loss of property tax revenue be mitigated in part as a condition of the city annexing the land. The 344 acres border the west side of Main Street/Manteca Road from a point just south of Atherton Drive where SaveMart plans to anchor a shopping center to Sedan Avenue in the south. Part of Griffin Park reaches the west side of Tinnin Road with a fairly large chunk at one point crossing Tinnin Road.