The 209’s most unique — and what could become the most prestigious — residential address will become available this spring.River Islands at Lathrop plans to sell the first of 990 lots set aside for custom executive-style homes overlooking the San Joaquin River, Paradise Cut, and the Old River that will also back up to an 18-mile greenbelt park along the water’s edge encircling the 11,000-home planned community.Lots will range in size from 8,000 to 20,000 square feet and will start at $200,000. To put that in perspective if all of the lots were to sell for $200,000 regardless of size or factoring in inflation over the years it takes for all to be sold, it represents $198 million in land sales alone.And given the expectations the homes will all exceed $1 million, River Islands will one day be ringed by $1 billion worth of homes.River Islands Project Manager Susan Dell’Osso indicated initial plans will be to develop 65 lots with no more than 10 lots ever being offered at one time. River Islands is likely to roll out the lots in conjunction with various phases over the community’s projected 20-year buildout.Dell’Osso said the lots will be offered for a period of a month or so to the 250 people that are on an interest list before they are made available to the general buying public.When completed it will be the largest concentration of executive-style homes in the Great Central Valley if not Northern California outside of well-to-do enclaves such as Atherton when it is based on housing style and not simply price.