I trained and set up the same type of seller financed side for the largest home builder in the state.

I work with several builders around the Dallas and North Texas markets.

I honestly don't think the guy has a predatory bone in his body.

Note that I am also a real estate agent as well as an investor/builder/developer, so I have multiple ways to monetize a postcard response. 

For us in the PDX market we saw a little slow down in the fall but thats pretty much normal but the bigger builders are still buying land and still building at a pretty good clip..

I wont do the magnetic signs , because I have a newer Ford F 250 and its an aluminum body and magnets dont work .

Defaults and Remedies A default exists under this note if (1) Borrower defaults in the payment of this note or in the performance of any obligation in any instrument securing or collateral to this note; (2) (a) Borrower or (b) any other person liable on any part of this note (an "Other Obligated Party") fails to timely pay or perform any obligation or covenant in any written agreement between Lender and Borrower or any Other Obligated Party other than as described in (1) above; (3) any representation in this note or in any other written agreement between Lender and Borrower or any Other Obligated Party is materially false when made; (4) a receiver is appointed for Borrower or an Other Obligated Party or any property on which a lien or security interest is created as security (the "Collateral Security") for any part of this note; (5) any Collateral Security is assigned for the benefit of creditors; (6) a bankruptcy or insolvency proceeding is commenced by Borrower, a partnership of which Borrower is a general partner, or an Other Obligated Party; (7) (a) a bankruptcy or insolvency proceeding is commenced against Borrower, a partnership of which Borrower is a general partner, or an Other Obligated Party and (b) the proceeding continues without dismissal for sixty days, the party against whom the proceeding is commenced admits the material allegations of the petition against it, or an order for relief is entered; (8) Borrower, a partnership of which Borrower is a general partner, or an Other Obligated Party is terminated, begins to wind up its affairs, or is authorized to terminate or wind up its affairs by its governing body or persons, or any event occurs or condition exists that permits the termination or winding up of the affairs of Borrower, a partnership of which Borrower is a general partner, or an Other Obligated Party; or (9) any Collateral Security is impaired by loss, theft, damage, levy and execution, issuance of an official writ or order of seizure, or destruction, unless it is promptly replaced with collateral security of like kind and quality or restored to its former condition.

I am an active builder in downtown Charleston SC and talk about small lots and roads only 20 feet wide logistics to build are brutual..

This is what can go wrong when you have beginners wholesaling who have no training in real estate, no experienced managing broker to go to for advice, no license, no E&O insurance, no knowledge of how to avoid scams, no regulatory body to answer to, no relationships with other quality people in the industry like title companies, lenders, contractors that they can refer to help people, etc. 

But when you are really ready to get going, you would engage a civil engineer and/or an architec, and eventually a general contractor/builder.