As a brief, useful source of info, I recommend the sections of David Greene's BRRRR book on contractors.

@Roger VerasteguiEnvironmentally friendly and affordable usually dont go hand in hand, as the more sustainable products are typically more expensive.One product that is starting to gain more traction in the US (like many of these products, it has been used in Europe for the last 30+ years with great success) is CLT, or cross-laminated timber construction.

Cross-reference these documents; i.e., verify that the net pay on pay stubs matches and appears on the bank statements they provide.

. - RU-2, TWO-FAMILY RESIDENTIAL DISTRICT[19]SHARE LINK TO SECTIONPRINT SECTIONDOWNLOAD (DOCX) OF SECTIONSEMAIL SECTIONCOMPARE VERSIONSFootnotes: --- (19) ---Cross reference— Height of fences, walls and hedges in RU Districts, § 33-11; location of swimming pools in RU-2 Districts, § 33-20(c); maximum setback for principal residential buildings in RU-2 Districts, § 33-45.Sec. 33-201. - Uses permitted.SHARE LINK TO SECTIONPRINT SECTIONDOWNLOAD (DOCX) OF SECTIONSEMAIL SECTIONCOMPARE VERSIONSNo land, body of water and/or structure shall be used or permitted to be used and no structure shall be hereafter erected, constructed, moved, reconstructed or structurally altered for any purpose in an RU-2 District which is designed, arranged, or intended to be used or occupied for any purpose, unless otherwise provided for, excepting for one or more of the following uses:(1)Every use permitted in RU-1, RU-1M(a) and RU-1M(b) Districts.(1.1)Workforce housing units in compliance with the provisions of Article XIIA of this Code.(2)On lots meeting the requirements for two-family use, every use as a duplex or two-family residence, including two private garages.

@Peter Tverdov and @Jonathan Greene.

But if you decide to sell then you need to make sure you're dotting "i"s and crossing "t"s. 

Green is the remaining 5.26%.

As David Greene oftentimes mentions in the podcast, the great thing about investing in real estate is that times bail you out.

Quote from @Lisa Green: I have a vacant property in Lake Worth Fl, I would like to build a duplex or triplex on property, Property is paid for, I am cash poor, approximately 5000.00 and credit score is fair .

Fingers crossed.