Crosby Texas (Harris county) building code

[John Ho]

I have a lot I’m want to sell the lot is 3,000 sq ft and I own about 1500 sq ft of land next to that lot, the partial piece of land adjacent has a separate Tax number. I was told by a builder that in Harris country lots need to be a minimum of 5,100 sq ft to build on and I would need to ask for a variance or wavier to build a home there due to lot size. Does anyone know how to apply for this? Or is it really needed? I see lots that are 2,500 sf ft for sale inside the city all the time.