Not to mention single pane windows, mold remediation (you could smell it strong) Over all it looked in the 35-40+ range.

I think if you have the money, invest in "replacement windows" if the existing windows are single pane.

At this point they're still paddling down that big river in Egypt but once the fit hits the shan they'll start taking my calls.For long term holders, e.g. not syndicators or private equity, if you buy with low leverage and a margin of safety in the cash flow you can pay market prices today and in 20 years the guy who sold it to you will be wishing he never sold.If you think prices are high in your market check out Vancouver BC where you'd be buying 60 year old, flat roof, single pane window, central boiler, never been remodeled buildings at 'suite' cap rates in the upper 2s.Just some food for thought but I don't think the Fed is as likely to raise rates (and drive up cap rates) any time as soon as most think.

If these are double or triple pane windows you might have a blown seal which allowed the gas charge to escape.

Servers cost money and bandwidth adds up, so any effort to reduce the strain on those two components reduces costs and improves the site.

For example, they want to make sure your windows have actual panes of glass in them and that they have locks. 

Here's a checklist I would use for a Dayton duplex that's good for cashflow.Rental neighborhood, no warzones.Rent ready or closeNo upcoming large expenses (roof, windows, furnace, etc)Double pane windows (pref) or single pane with storms (acceptable)No wood siding.Tenants pay all utilitiesMonthly rent 800-900 for a two bedroom, 1000-1200 for a 3 bedroom.2% rule. $800 gross rent = 40K max priceReduce price by major expenses, and to correct items above.There's some variation depending on the submarket, but this list would get someone started right.

Something like this would certainly put a strain on my business even with my reserves.  

I had buyers ask me, and met people who moved from the north, who asked about putting in double pane or storm windows.

Point taken on the single 400A panel, I think that might be what I end up doing.