For those needing information in the future, read the US Code and Dept of Justice website.

I just opened escrow on a duplex in Los Angeles (zip code 90037), for $610,000, I am freaking out!

Have they have been updated and are up to code. otherwise you should consider all these factors in your offer and plan to address them. 

One of the towering strengths of a house-hack, where you buy a house with the intention of renting out a portion of it to cover your costs of living, is that if you found yourself with a suddenly altered income, you would have a lower cost-of-housing to allow you to weather that storm better.Best of luck out there, Nate!

BUT if it ever needs to be replaced the code is stringent & the upgrade is very expensive.

Why are you picking those zip codes? 

Code) forbids the unauthorized distribution, display and reproduction ofthis form, or any portion thereof, by photocopy machine or any other means, including facsimile or computerized formats.

If you would like to ask the SBA directly I find the New Hampshire 9am and 2pm EST call a great way to actually talk to a human there.The conference call number for the SBA in NH is 2O2-765-I264 entry code is 522409519#I suggest all with nuanced questions to give these conference calls a try.

These are professionals with additional training and a stricter code of ethics.

Zoning codes use different nomenclature and descriptions everywhere, but they all say the same basic things.