Call your friendly local planning department and ask if you can subdivide the lot. Some zoning districts have minimum lot requirements, and street frontage requirements. For example: in zoning district A, you need thirty feet of roadside frontage and lots have to be one acre minimum. Zoning district b only needs half an acre, etc. This way you do not run into the unpleasant surprise of the local planner saying 'No, I can't approve this, it doesn't meet our ordinances.'
Source: I'm a friendly local planner. Until people call me a communist for not allowing them to subdivide their property into a pentagram with no road frontage for ambulances. Then I start hissing.