Make sure you've looked at and understand the condition of certain critical parts of the home i.e. roof, windows, flooring, etc.

Yesterday one closed for $635,000 on the lowest floor without a view at all, it had a modest 250 sq ft terrace that only the bottom floor units have.

It's impossible to "guesstimate" an install cost without a detailed information, such as:• what is this porch supporting (I.e. second level, second floor deck etc.)• footings: are they needed?

Tear out the nasty carpet and get my hardwood floor guy on the schedule.

2) what product did you use to stain or paint the basement floor? 

It will be a fairly large job - new kitchen, take down some walls, refinish hardwoods, etc.  

Hello everyone,Is it normal for a 100 years old house have the middle of the floor pop up?

Next would be your floors.

Also you might be able to add a 2nd floor if the footing can support it, if it's a problem of not enough square footage...that may be cheaper than a tear down but probably not if it is really old or in bad shape...

All carpets were replaced and wall / ceiling paint and floor sealer.