Bought a family home because that's all that was available to me

Thank goodness I grew up in Bellevue and had grandparents who could sell me their home without it going on the market. I'm hearing more stories like this of long-time families helping their kids/grandkids by selling to them so they can stay local. As time goes on, I'd like to sell or work with a developer of my 1950's home right near Downtown Bellevue to subdivide the property to allow for more dense housing options. I'm so tired of seeing the HUGE homes on the close-in lots when it would make so much more sense to put 3-4 townhomes or cottage homes on that lot instead. Holding out hope I can afford my house payment and property taxes till the city will allow us to upzone. I'm one block from a bus stop and all amenties. A perfect to upzone. Please experiment with me!!