-building codes everywhere are becoming more and more stringent in regards to energy use.  

If you're legally allowed to own the property I imagine you're allowed to do anything you want with it so long as it conforms to local laws and code. 

Another perk, is you can get codes to go look at properties whenever you want.

Both properties happen to vacant lots that used to have single family homes on them and have since been demolished (one for being burnt down and the other for code violations).The thing is, I'm not really sure what to do with the lots.  

You need to call the assessors office and building and permits to dig for info.If the 3 plex is grandfathered in or was never allowed to begin with then you can't buy based on the seller shown cash flow model because if you will not be allowed to do that you will not make that gross income for rents.You need to see if it is even allowed and then if it was remodeled is it up to code and permitted??

I check slickdeals.com they usually tell you the best way to to it. just read this Use discover card to buy online Giftcards at Cardcash.com 5%cashbackbuy Home depot giftcard with promo code TBHOLIDAY for 11% off buy over 1000$ for an extra 1%17% for HDor use CC and topcashback for another 5% off <--- can not use giftcards10% off at HD with CC I just use the lowes gcs for 11% off and the 10% off coupon with contractor pricing (if it's over 2500).

I've had to mow yards for tenants before because they weren't keeping it up to code and the city charges $184 plus 18% interest per cut, most expensive lawn service in town which is immediately recorded as a lien.

I hope to help create a system of individuals in the 93230 zip code that enables us to utilize our knowledge, resources, and opinions to help us all make a little more green.

However, with some additional code, you can track this nowhttps://support.google.com/adwords/answer/6095883?...

Are you getting even more targeted (evictions, code violations, etc.)?