I know that what I'm asking is high for a 1 bedroom, but it's really large (1,200 SF), and has 2 extra rooms (altho they shouldn't be bedrooms because no windows). 

All the county told me is that I'll have to do some landscaping work, add extra parking spaces, but I don't know anything about the stormwater plan. 

A contingency in this case means setting aside extra funds to cover any unexpected cost increases during construction.

Lining up back ups (back up contractor, PM, extra reserves) won't hurt as well.

Future tenants would likely appreciate the extra storage, and it could make your duplex more attractive in the long run without the hefty upfront investment that a full conversion would require.Another idea is to repurpose the shed into a functional office space or a private workout area.

Upgrades like in-unit laundry, new flooring, or upgraded kitchens can increase perceived value without major investments.Rent out Extra Space→ If possible, look for ways to increase income from the property.

I can typically find a new tenant to start renting shortly after the original tenant leaves, earning me a little extra money for my trouble.For tenants that can't/won't pay the termination fee, we let them know they remain on the hook for all expenses until a new tenant takes over.

I'm looking for someone to share a room with and I'm also trying to go for an extra day (5th-9th)!

Approval for extra pets, yes: I have multiple statements about "and damages by guests, XYZ caused by guests, performed by guests, etc."  

Meaning the buyer has to bring 25% downpayment PLUS any extra you can charge.