Is this customary since the form is supposed to be obsolete? 

There are numerous 'rules' you will read about but the reality of it is in todays market (in Central Florida at least) all those rules are obsolete and if you make anywhere from a 13-15% ROI on a Flip then you are ahead of the game.

Zillow, Hotpads, Trulia, and the others are making the advertising that property management companies used to do obsolete as well. 

Last listed for sale 11/19/2018, listing removed 3/25/2017, price $127,900.This is usually the part when I start talking about trying to make magical thinking work in D-class by way of a spreadsheet, the perils of investors buying obsolete housing in the Rust Belt purely on the basis of numbers with no construction or renovation knowledge, how difficult it's going to be to get contractors in to bid on jobs for a property like this, how it's quite likely that no third-party property manager worth having would take it on as an investor's single property.

Leased in 30 days, some commercial properties take years to lease, and some are never going to be leased for enough to cover expenses, they are economically obsolete.

I've had success getting obsolete parts this way before. 

You really don't want that.Now the right question to ask is, should you put the return address and your info... not to figure out what the open rate is, but because now will know who the truckster is.Look seriously... it is hard to accept  something that worked for years suddenly is becoming obsolete.

Once you know that, use it as it was intended and not for anything else.Additionally, note that this guideline is typically used for single family small multi family properties and is obsolete for larger multi family properties. 

Technology today has made this style obsolete and even those that are still built like this don't use it the way its design which makes it even more obsolete.

Some of these properties in lower elevations may already be considered obsolete because of this.Setting the politics of climate change aside, it is a fact that water levels are rising in coastal regions, and some parts of PInellas county already have to deal with tidal flooding regularly.