Period depends on the age of the owner, usually.You have to figure out what the owner really wants.

Hello BiggerPockets family Newbie here looking for some advice.A little background on myself first, I bought my first(and so far only) house at age 21, did some home renovations using debt, and got myself a couple car loans.

Costs vary considerably based on the service structure and type of firm.The maximum you can put in a Roth IRA is $6000 if you are under age 50 or $7000 if 50 or older. 

@Kristopher LamyYou can look at comps, tax value, back taxes owed, age of property, location, condition of property (as observed from road), area, market rents for area, bedrooms, sq footage, how many years they are delinquent, owner occupied vs owner lives at another address as shown on tax bill, etc.

it was common for your age house to have the pipe for the drain installed before the slab was poured. 

To go even further, your capex and repair assumptions are going to be based on a few things.1) Age of the building - the older the building, generally the higher the repair expenses2) What repairs are you doing to the building - if you are renovating the entire building from top to bottom, you may want to be less conservative on the repair assumptions as everything will be brand new3) How conservative are you as an investor - some people will model properties out with zero room for error and they may assume a lower repair cost that you will4) What is your end game - if you are going to hold the property long term, I would assume higher repair costs as compared to a fix and flip that you will dispose of in a few months.Let me know if you have questions.

It's called Set for Life, written by Scott Trench, and it lays out a high-probability path to basic financial success at a young age.

Most of the mobile home parks in the U.S. are all-age communities.

Congrats on getting into the fun world of multi-unit investing, and at such a young age. 

@Jay Hinrichs, I think, in the short term, if there actually is movement to break up the big tech companies with anti-trust laws, that could be a big deal.