They have specific researchers called "research analyst" that do nothing but put this stuff together.There are commercial data companies that supply the info that charge a bunch of money.The key is if the info Is going over a macro level or a micro market.

Many variables of course.

Before going after demand (investors) you need supply (Properties) to be able to close the deal then and there.

These will supply the cash flow needed to sustain your daily lifestyle and any other investing you'd like to pursue.Research, learn, take action.

You can learn different trades through establishing a good network of people, but you can also save money on jobs by just taking care of the non skilled trade jobs and only hiring the professionals when needed.A real estate license can be obtained if you feel the need and won't require a large time or money commitment.I personally hold a sales position and try and use all of my variable income for real estate investment and live off my salary.

I have 400K in a variable annuity earning around 4%.

If it is an older house, those were probably gas supply pipes for gas lights that would have been on the walls. 

I've been around to some so called wholesale suppliers but their prices are still astronomical.However if you have a contact that is a landscaper and can supply and install at a reasonable price, please let me know or have have them call me.

D might be Detroit.For commercial hospitality (motel chain), i have done 2500/room, flooring and granite were owner supplied. scope was interior painting, r&r flooring, inst granite, change wallplates, install tv and brackets, minor electrical and minor plumbing. the budget is fine.

Companies like HD Supply (this used to be part of HomeDepot but homedepot sold them to some other company, now they are WhiteCap as trade name), or would probably contact the manufacturer myself.