Different lenders can serve different purposes. 

Hopefully this is useful for your purposes.

Are there any  other effective  platform to list  the house for that purpose ? 

Not only is it the right thing to do to help them get their legal ducks in a row about knowing SPECIFICALLY what the seller did wrong, ie did not disclose and can prove it was done for the sole purpose of deception to make the sale "smoother" but it can help you look good and have you learn how to avoid in the future (as you say "tighten up your due diligence")It sucks when agents "help" 1st time or largely inexperienced buyers long enough to make the sale and get their commission but then peace out on the client when something like this happens.It It seems like you are attempting to do the right thing which is admirable bc at the end of the day, the court system is the closest thing to a "business police" that ppl can get. 

With permit, benefits are 1) get depreciation and other tax write off benefits since it’s a permitted investment purpose ADU, 2) probably better for resell value, 3) have a separate address and don’t have to bother sorting out mails for our legal tenant, etc. without permit; benefits are 1) no hassle to get the permit, 2) no permit fees, 3) no tax on rental income (as it is more like a “roommate”)Has anyone gone through a similar situation before?

Originally posted by @Stefan Tsvetkov:@Mia Shlomit Does the intended condo conversion aim to eliminate rent control for the building or another purpose?

•Set up your EIN and operating agreement.2.Set Up Your Business Bank Accounts:•Open 3–5 business bank accounts to give your money purpose:•Income Account: For revenue and deposits.

Properly structuring your bank accounts ensures that every dollar in your business has a purpose.

There is a faster review/approval process if the exterior works are minor and for maintenance purpose.

Or, once you finish your exchange you can immediately do a cash out refi, which is not a taxable event and you can use that for any purpose you want.