I've sent letters to absentee owners and didn't get anything, but I know that even a sample of 1,000+ isn't enough.

Here's a place to check what is permitted in your state: http://www.nolo.com/legal-encyclopedia/paying-rentHere's a sample of my language in my lease.

I would like to know if there any sample documents or agreements that you have to let your customers sing that will protect your LLC and also protect your customer.

In my experience a firm (group of Attorney's working out of one office) always has someone, Attorney or staff, who can respond quickly to your needs. 2 Check out this link for sample contracts other members have posted on Bigger Pockets. https://www.biggerpockets.com/files  find samples similar to what you want and adopt what another member has done, to your needs. 

I was able to find the El Dorado county website, but its unclear to me still: https://edcgov.us/Government/building/sample-fee-estimatesIf I'm understanding this correctly here are the actual fees I'm paying if I were in Zone 4 for example: MULTIPLIERTechnology Fee General PlanPlanning Review FeeBut then the "Other Agency & Development Fees Due At Permit Issuance", and "School District Fees" Is where it becomes unclear.Any help would be appreciated.

Recommend you do a sample at first, then narrow down your field and get into that "Lane".3. 

Would you happen to have a sample screenshot of an active account so i can get an idea of how one of these beasts operates.Thanks-John

Resources (sample):https://hcidla.lacity.org/Relocation-Assistancehttps://hcidla.lacity.org/sites/default/files/documents/declaration_of_intent_to_evict_for_landlord_occupancy.pdfQuestions:-Does anyone have experience negotiating with tenants (cash for keys), without hiring an attorney?

Calculate the IRR of your sample case.

You can ask them for a sample report, it’s really comprehensive and actually free for all parties.