But for something from around 1920, it may have already been refinished several times; I recently had 1920 vintage wood flooring refinished, and it does not look like there will be another sanding left ...One thing not yet mentioned is that 1920 vintage housing often used heart pine planks as the subfloor.

In their research they found post 2000 properties averaged around $400 while the pre 2k vintage properties averaged more than $700 with most ranging from $600 to over $1,000.

But it also gives leeway to the honest people to do what is needed to do the job right without throwing out the baby with the bath water.BTW, you do know that the "Chinese Drywall" problem encompasses several brands, and that the amount of sulfuric acid off-gassing varies not only by brand, but vintage.

I love that you kept the vintage charm, like the detail over the sink, but updated it.

You want to get properties of similar vintage and see what cap rates they are selling at. 

Bosch is all we buy now...Have about 20 of them of varying vintages & never had a repair YET &I try to buy during the scratch & dent sales.

Go to Oakland CA. house is 500k cross to Piedmont same house is triple.. and that's just going across the street same vintage homes and sizes etc..

Commute, school district, and you'll get more in Everett in terms of house, yard, and product vintage/rehab for the price.

You will evaluate slightly differently buildings of various sizes and vintage builds.

Locally about 10 percent of the 2004-2006 vintage is expected to have itHere is a link from the state of Florida about what to look for http://www.doh.state.fl.us/environment/community/indoor-air/inspections.html