Seller financed (probably) won't be reported to the credit bureaus and so won't impact your credit score at all.

Also, as someone that works for developers across the country that own similar types of properties, I expected that interested lenders will need to know your estimated credit score and the amount of development experience you have.Also, since you're posting this on BP, I assume you're looking for quotes from Hard/Private money lenders rather than banks or credit unions, is this correct? 

Hi, I just filed my first eviction in Union City NJ for a tenant who stopped paying rent.

DM me and I'll connect you with the Credit Union I send my clients to.

Do not let this slide, even if the score impact is negligible.

Then I spoke to a company that does business lines of credit, based on personal FICO scores.

My first deal looks like it will fall through because the bank doesn't like my work history. (4 months as a union electrician, which the bank considers contract work).

So I just rcvd a rental application from Zillow and the credit score is showing 714 which sounds good...

Some credit unions will go to 85%-95%, but there are just a few that will do 100% loan to value! 

Best places to look for a HELOC are often the small community banks and credit unions close to the property.