I’m a construction Project Manager and also have experience in flipping raw land.

You can own residential, commercial, raw or improved land in your IRA. 

I am marketing, contacting contractors to facilitate renovations, getting bids from builders for the land I have under contract, double closing on a few Acres of raw land which is in escrow, and the ever-present task list for the rentals that I have purchased.

Do you like raw land?

I am considering investing funds from a Self Directed IRA into an LLC which will be developing raw land and constructing townhomes. 

You can own residential, commercial, raw or improved land in your IRA.

You can buy single family homes, multifamily homes, large apartment buildings, and raw land and develop those investments including industrial buildings, warehouses, office spaces, etc. and have some sort of diversity just in real estate.

This is a raw deal for landlords, but you may have to agree to it if you want to place tenants.

Then work backwards subtracting profit, costs to build and sell or rent, cost to develop the land if it's raw and cost to permit if the lots are improved etc. 

My question is, if I buy raw land and request to rezone the land for a mobile home park use, will this be worth doing or are my chances very slim with this?