After that you have to consider property taxes, income taxes, weather (both damage and mitigation), age of the house, HOA fees, construction (stucco vs wood, tile roof versus shingles), city utilities versus septic/well, location,location, and oh yeah,Location. :-) ($500k House in San Jose ca or on the farm in the Midwest.)

More than likely you'll have at the least replacing some roof sheeting, the roof (ie: shingles) as well as the floor and the sub floor. 

This is what I would budget assuming its a lower class neighborhood and having a handy man do most of the repairs.Possibly a little foundation work (it’s on blocks) - not descriptive enoughnew water heater - $700 to $900 (Labor & Material)needs central ac/heat installed - $4 to 7k for both ac & furnace unitsnew roof (fascia and all components included) - assuming asphalt shingles, ~ 12 squares, probably $3 to $5k (Labor & Material)new flooring possibly some subfloor replacement - not descriptive enough...you can get install a vinyl tile for ~$4...subfloor work may be around $45 to $60 per 4x8 sheet to replace exterior siding work(paint some, replace some) - paint is generally $1 to $1.50 per sf, but could be more if there is alot of scraping, patching, etc (Labor & Material)some drywall work where there are some small and large holes in the ceiling and walls in a couple of spots. - budget $500 to have a guy patch walls for a day or two (Labor & Material)couple windows replaced because of broken glass - if you can replace the panes maybe $100 to 150 each, otherwise full window ~$300 each. 

Roof of asphalt shingle replacement (not new layer) cost $8K (typical rental size structure which is not large), lifetime 20 years. 

This, while he is putting new shingles on the roof!

TONS OF UPGRADES, GRANITE, CUSTOM CABINETS, CORBELS, STAINLESS STEEL APP PACKAGE W/ FRIDGE, HEAVY CROWN MOULDING, DBL SINK IN KITCHEN,9 FT SMOOTH CEILINGS THROUGHOUT, CERAMIC TILE WET AREAS, OIL RUBBED BRONZE FIXTURES & HARDWARE, WAINSCOTING, GAS LOGS FIREPLACE IN GREAT ROOM, 5 INCH HAND SCRAPED HARDWOOD FLOORING, COVERED FRONT PORCH W/ CRAFTSMAN COLUMNS & LARGE COVERED PATIO,OUTDOOR FIRE PIT & STAMPED CONCRETE ON PATIO, ARCHITECTURAL SHINGLES, MOSAIC GLASS TILE BACK SPLASH & TILED GARDEN TUB.

The roof doesn't leak and there are no missing shingles.

I will be providing all materials, e.g. underlayment, shingles, nails, etc., the dumpster and pulling the permit. 

Should I go with a shingle roof or metal roof?

They could say, we want to see this that this exists, for instance, you said you put a new roof on, they could make you take a row of shingles off to see the ice and water shield meet code.