My go to recommendations for those getting started:1) Best ever apartment syndication book by Joe Fairless2) The Hands off Investor by Brian Burke Rod Khleif's podcast is great, we will also be launching our own, Crushing CashFlow this coming Monday the 15th, check us out on Itunes!

There’s no information in the MD land record archives?

of https://vintagetexas.com/blog/archives/19549#:~:text=In%20the%20mid%2D1800s%2C%20the,laid%20fallow%20from%20this%20infestation.

You may get lucky and get a free one, but then again ...they may well archive it for you for FREE.  

., sometimes you luck out and can find proof of the extra unit existing before the introduction of zoning, in the city archives), however it is rare.Usually the issue is that to go up a unit you need to conform to current building code, including lot size and parking, and the lot just isn’t big enough according to current building code.

Warren Buffett has been vocal about this:https://www.latimes.com/archiv...I know someone with a property currently listed for 7.8M that he bought in 1990.

Purchase price: $330,000 Cash invested: $30,000 Currently rezoning for mixed-use: https://www.newhavenindependent.org/index.php/archives/entry/tattoo_parlor_apts/ - taking a 2500 sq ft stand-alone commercial building and converting it to mixed-use building with street-front commercial and rear residential.

Search the BP archives.

A lot of questions are covered in the archives.  

I subscribed to the podcast on iTunes and listen to it every week since.