Estimating these is a matter of evaluating the remaining useful live of your mechanical systems and dividing the cost of a new one by that number (in years or months)... e.g.

I wasnt working a 9-5 at the time, but flipping autos for income.  

I have found a few that have a lot of equity but I don't understand the mechanics of getting the redemption rights>Please contact me if you are interested on partnering on a deal or have some information you would like to share.

Contractor has a mechanic's has a lien on the property for @200k.

Any outstanding debts such as school loans, auto loans, or credit cards20.

Right now I am a turbine mechanic assistant.

Ran this on the highest cycle.Brand new and no signs of break down in material or mechanics.

Most agents auto populate square footage from tax data in the MLS.

Although, keep in mind, if your tenants are using an existing form of payment that works fine (and they pay on-time), then you may not want to (or have a difficult time) switch(ing) it.Not my preferredCash - Prone to theft and difficult to trackPersonal Check - Can bouncePreferredMoney Order - Not likely to bounce and difficult to cancel (although many have limits)Online Rent Collection - Easy to track and auto-payment doesn't give a good excuse for late paymentFor new, incoming tenants, I give them the two preferred options. 

As a mechanical engineer by trade, I began doing handyman work over 20 years ago.