Do I need a separate effort to survey and verify the property boundaries?

You want this person to be able to qualify the lead, perhaps they have a script, or an informal survey they give in order to know how to handle the call.

Most of your bigger banks and mortgage brokers have a $50k minimum, chase, b of a, and companies like countrywide and such, local banks and credit unions will normally loan basically any amount, I've done as little as $15k, but you still pay similar fees, orignation cost, and surveys, apprasials, and such fees that are generally the same cost if they loan $10k or $100k, so there becomes a point when imo its not worth going through the bank, as the upfront cost are too great for the property, i.e. $2000 to get into a $20k house, at 7%, or you can do a hard/private money or similar loan and pay 12%: but have less requirements to obtain the loan, that 5% doesnt make that much of a difference in payment.20k 7% 30yr payment $133.06/mo20k 12% 30yr payment $205.72While that may be $70 a month, if your orignation cost are $2000 greater it would take you 2.5 years of paying that higher payment to become even, if you wanna keep it for 30 years pay for the rate, if your unsure your longterm plans, pay the higher rate and keep your bank loans open for higher priced properties you may come across, it sucks to have your conventional loans all tied up with small $20k loansHml also close ways faster, giving you a buying advantage.Now a days with banks being so strict on the number of loans they will make and such it really sucks.tieing up one your money "lifelines" for a 20k loan.And with 25% down I'd think most private money guys would be all over that, get a deal at even 10% off retail, put 25% down, should be within most of there guidelines.Little off topic but something to consiter before using banks for smaller loans!

How would a person begin looking for a existing survey?

I am working with an Owner to sell 3 properties in Schuylerville NY (Zip code 12871) The owner completed an architectural design and land survey to convert one single family and two mobile home lots into "the largest and finest home in the Village".

You can generally figure out a basic idea of what is POSSIBLE by looking at an existing survey of the property and understanding the zoning regulations for that district.

Recently, I received Commercial Property Survey “Property inventory information” from the Assessment Equity Improvement Project 2022 and Real Estate Appraisers and consultant. where my six-unit is located? 

I would survey the job market for your tenants, if it is growing.

Seller is asking me to pay for survey + titleAnything else I should be weary of?

I was told that the city of Houston charges about ~$1000 in fees and a survey company will charge something like $7-10k to do the surveys/plans/applications/etc.