Good luck on the investigation,, as far as running any type of drainage.. we were cautioned at our property when we put the sump pump discharge hose to the front yard so water would drain into street and go down into the sewer grate.. we were told by city we couldn't do that and they suggested we put in a underground tank reservoir type thing.. basically all we did then was move the discharge hose to further point in back yard.. it was a flip house so we only had one season to deal with the issue.So don't do all the digging work and then find out you can't revert the water to the street and have to yank it all out.. if you do a drain tile type thing to edge of front property line.. water is funny you want to control where it goes but it has a mind of its own sometimes. 

The rent/lease is too hight and there's no rent control to reign it in. 

Stay in as much control that you can for anything you are responsible for.  

By using a doctors form, you control the content and can ensure it is only completed by a trained mental health professional.

Hey guys,I'm looking to house hack into a 4-plex, but I'm worried about SJ rent control.

Try to maintain control of everything yourself.  

See following for a list of lenders. https://www.biggerpockets.com/blogs/3441/51027-nonrecourse-loan-debt-for-self-directed-solo-401k-investmentAnd following are the similarities and differences between the solo 401k and the self-directed IRA.The Self-Directed IRA and Solo 401k Similarities Both were created by congress for individuals to save for retirement;Both may be invested in alternative investments such as real estate, precious metals tax liens, promissory notes, private company shares, and stocks and mutual funds, to name a few;Both allow for Roth contributions;Both are subject to prohibited transaction rules;Both are subject to federal taxes at time of distribution;Both allow for checkbook control for placing alternative investments;Both may be invested in annuities;Both are protected from creditors;Both allow for nondeductible contributions;Both are prohibited from investing in assets listed under I.R.C. 408(m); andNeither may be invested in your own business. 

There's a level of control of your own destiny, whereas if you're buying stocks you don't have much control over what a particular company does.

That gives you incentive to refinance but doesn't force you out of your asset if circumstances in, or beyond, your control make it difficult or impossible to conventionally refinance the property. 

What is the general best practice/policy for dealing with pest control like cockroaches in a shared building like a 4 plex?