Trade Me also has a tool called property insights where it gives the estimated value and shows the size and shape of the section for every property in New Zealand.

Finally, BP has various tools available to help you analyze your deals (rental, flips, wholesale, etc), feel free to use them: https://www.biggerpockets.com/investment-calculators Please let me know if I can help, and best of luck!

I'm on an 80% split with low fees and a phenomenal amount of tech (outstanding CRM, lead gen tools, transaction management, training, etc) provided. 

I was using call tools for cold calling and most of the numbers supplied were business or no good.

GreatSchools.org is a great search tool for assessing a school district's quality.There's a lot more I look at, but those will get you started. 

If you are comfortable with fixing up and enjoy it, you will learn invaluable lessons going that route and may be able to build in significant equity out of the gate by not being one of those picky buyers yourself.

A lot of forum members are very knowledgeable in their respective fields related to real estate investing, whether that is real estate sales, wholesaling, flipping, rentals, lending, self-directed IRA and Solo 401k investing, or tax and legal guidance.Discounts on some products and services are offered to BP members: https://www.biggerpockets.com/perks/proIf you haven’t been to it already, you might want to check out the BP blog: https://www.biggerpockets.com/blog/The site has quite a few tools that can be helpful for new members.

Door knock them yourself, Skip trace them and call/text (they may have already left) Skipgenie.com is a great tool for that, Post a written notice to the door (all that's required in most states), consult your attorney. 

See the Tools tab on BP, there are calculators there:  https://www.biggerpockets.com/real-estate-investment-calculator

Finishing a basement will bring in value as well.