I am not sure if a concrete guy will do a retaining wall assuming you want the retaining wall blocks. 

Look them up in your local county assessors website for the owners mailing info and send them a letter or leave a letter at their door. 

When submitting the offer is there anything I need to include beyond the following:- purchase price- down payment- interest rate- amortization periodThe listing agent is asking for POF letter, which seems a silly to me when it is just for the down payment.

All that with additional cost depending on the choice made.The people who I am planing to offer the house are people who I have got them on my list of home buyers with pre approved credit letter, or people with cash.

I'm going to be starting my yellow letter campaign here in the next 2 weeks and just want to know if anyone is willing to share their purchase/sale contract and agreement to assign contract.  

You could probably find some free legal counseling maybe to send a letter threatening a lawsuit if they don't at the very lease give you your deposit back.  

The reason is with values rising in many areas counties and cities are sending out letters saying so and so will be in your area on this date and have a form to fill out.

You may consider drafting a letter advising them of the transition and who to contact for maintenance issues, etc.

I took a deeper dive, and listened to may of the podcast episodes that Sean had put out, as well as the BP podcast episodes where the various methods of wholesalers were revealed in interview after interview.I found many similarities among what I'd read and heard on the podcasts:Direct Mail is a very popular way to goYou'll likely need to spend thousands in marketing dollars (most likely using yellow letters and postcards) to get the deals coming in to youOnce you get one deal, the rest snowballCommit to one marketing strategy, bandit signs may work but they tend to be the least favored here on BP (due to their "uglying up a neighborhood" and the fact that many times they are illegal and get removed)So I get the general gist of this but the questions I still have unanswered are:How does one know what is the right legal language to put on contracts?  

Ok here's a property I am thinking of submitting an offer on:1-sf block home 1630sq ft pristine condition(owner occupied) potential rent $13002- duplexes 4 units total 2/1 each rents are $675,$750,$750,850.