He told me to write a written offer and give it to him to review it.

All offers must be in writing, with a good faith deposit.

When an investor asks for an 'investor friendly' agent, I just take that to assume an green agent who's willing to write lowball offer after offer in the hopes one sticks.Or someone thinks there are 'investor friendly' agents that have tons of awesome off market pocket listings that they'll start giving them. 

I would write something along these lines:Hello:I am an investor interested in purchasing properties in the area.

Yes, I can write it off on my taxes but that is not really an incentive.

If you write up your own, you are practicing law, which is expressly forbidden once you are an agent.

It just helps you to get better. ........write that stuff down (what worked and what didnt) so that you form your own policies and procedures.

From what I am reading is he has no paper work signed by you for the extra so he can not place a lien on items he did with out a contract.The problem is coming up due to the fact that you cut out the general contractor and started dealing direct with the sub this is why you have the problems . if it were me I would pay him 55 to 60 % on the dollar on what he is asking get him to do a release of lein that about 3,000 you just had 55k worth of renovation done to your place that you did not have to come out of pocket why would I go back and forth with the kitchen installer about 3200 dollars .Next time let all deal come threw GC and just state any changes in price have to be in writing on all project and signed off on all parties.Sign off after you get it on paper from him as well as the GC and move on.

Write a letter and send it to them!

@Iris OrtizMy eperience in writing up owner finance offers is from a Realtor's point of view (i am a realtor /investor).