Tell them straight up that there is no basis for their request; houses that has been used as meth labs have specific characteristics that this one never has and cannot be rented until after thousands of dollars in testing ($5k to $50K) and a total gut of the interior is completed. 

The very cheapest way to go is for you to wash the interior of the house. 1) Washing from the celing to the floor, including everything ( such as lighting fixture covers, the surface area above the cabinets, etc) is extremely time consuming and not easy.

For example, what if you decided to paint the interior dark green, which is largely unacceptable to the tenant segment normally attracted to your property?

A sign must be posted on the interior relating various information required by the city.

I don't see how starting interior demo and framing or rough-in work would be in the way of doing exterior work?

Then the following year I got a nice house that needed a new roof, siding and some interior repairs from the water that leaked in.

He's only warranting for two years.I wouldn't pay $40,000 to paint the entire interior and exterior!

in the SF peninsula and down to Cupertino there was a builder who built about 30k homes in the 50s and 60s  called Eickler these were modern heat in the floor tons of glass interior walk ways with gardens in them etc etc.. very unique ..

The Interior and backyard pics are what will determine if they like it.

You may want to hire an interior designer though and go all out if you're going that route.I own a 2 acre lot with a view just outside of Pigeon Forge.