Even though I'm a CPA, I no longer practice tax nor have significant experience with this type of installment income.

Seller financing cannot charge points, the loan is funded by equity, and there is no pre-paid interest for equity under an installment contract.

You better off going with home depot install service.

Currently I need some minor electrical work done and a new window installed, but it's always something different.

I can't get there every other day to remove snow or install the storm windows.  

That said, there are certain things I always do, which reduce my headaches and increase guest satisfaction, such as installing electronic locks (I use YGPAK locks which are inexpensive, durable, and easy to program and use...  

Fire needs to be updated between units inside of house which I am going to try to get the seller to install as part of deal , but will probably cost about $3500 at the most.

The only way to do so would be if you utilized an installment agreement to pay over multiple years. and in some cases they can be disallowed as a disguise to avoid taxation in the current year; however, that does not happen very often.

Homedepot charges $0.89/sqft for installation if you buy laminated floor that is at least $1.50/sqft. which equal to $4780 for 2000 sqft.

Homedepot charges $0.89/sqft for installation if you buy laminated floor that is at least $1.50/sqft. which equal to $4780 for 2000 sqft.