the necessary repairs are as follows:  water heater missing, furnace looks old. paint all rooms, new flooring needed in most rooms, ( something i can do myself), recondition kitchen, replace entry doors. the house already has a newer roof and newer vinyl siding, virtually no work necessary on the outside. given my rehab skills, nothing will need to be contracted out, so i am able to save a tremendous amount of money on the rehab, which is why the following rehab number is so low.

Despite a very good townhome, it was rented out with badly stained carpets, damaged kitchen vinyl flooring and appliances from the 70's..... the roof literally fell on our previous tenants and it was like pulling teeth to get him to pay a DECENT roof repair.I recognize he's pretty lucky to get it rented out at all now, let alone 15% above market value.

The stucco on house is old and in bad shape so probably needs to be removed or vinyl side over it.Question: If I decide to an an offer how much should I budget for repairing this and how complicated and expensive will this repair be.

I certainly wouldn't suggest to pull an electrical permit to change an outlet or a plumbing permit to change some cast iron sewer out to pvc. 

Vinyl flooring or tile?

That PVC piping is the drain from the sink which is obviously going to be replaced.

This would be pulling down horizontal siding on both sides of a garage of a duplex and replacing it with something else - vinyl, maybe?

@Colin Simpson Doing a live-in flip was not something I was comfortable with because I can do basic things like painting, connecting some PVC pipes, etc. but not any real contractor work.  

Replacing all light fixtures, faucets, doors, door knobs, ceiling fans, every inch of wall was repainted, all moulding from brown to white, new laminate flooring through the whole first floor and vinyl in the bathrooms, repainted the deck, and really landscaped outside, as well as a brand new porch.

Wish they had PVC about 60 years ago would have saved a lot of headaches.