It might be as easy as applying for a zoning variance, but you'll probably have to get your neighbors to sign off on it.
Livingston, 200 East Grand River, Howell, MI 48843 ............................(517) 546-0500
Here is the address and telephone number of the county clerk's office.
Giving them a call should get you all the information you need to apply. I don't know what the H in HC stands for, so I have no idea how it would apply to your situation. Your neighbors may object, but that shouldn't stop you from trying. Many variances are granted over the objections of neighbors if the council or zoning board approves of the development.