After each one, be sure to take the time to reflect on lessons learned and to modify your business process and model as needed. 

Must we use the 8 page California Residential Purchase Agreement to put the house under contract or can we use a shorter, modified purchase agreement?

If yours didn't, modify the script to fit your scenario, "If you want we can provide washers and dryers as a convenience, we would just expect you to to fix anything if they break....

(I know it's kind of a general question but try and give examples of your own experience, it will help me modify it to my situation). 

So far only one tenet had to modify their rent, then I let them out of her lease.  

I have had to modify what I am willing to take in risks. 

We talk with them on the pre-screen using a modified brandonTurner-like form. 

I added a laundry room, new roof, external lighting, modified the landscape, new front porch that stretches across the entire front of the house.

Lessor may adopt other rules and regulations at a later time provided that they have a legitimate purpose, not modify Lessee’s rights substantially and not become effective without notice of at least two (2) weeks.”With this clause can I legally implement a new parking policy if I give 2 weeks notice and provide all tenants with the policy?

Some of those downtown buildings are more difficult to modify than you think.