Mike Lambert above is correct about house values in Japan.

And you are wondering if you should spend lets say $125,000 on a house you have never seen ? 

If I were in your and/or your mother-in-laws shoes, I would go to a local bank and use the free and clear house to secure a $150K+ line of credit. 

Your time is worth money, it's time that guests aren't renting your house. 

FlashlightTape measure/Laser measurePaper/Pen/iPadBinocularsReceptacle testerLevelMarbleDroneRespirator/Face Mask/Eye Protection/GlovesAQI testerWater pressure gaugeThermal cameraEndoscope cameraKnifeI bought over 20 houses in my lifetime and I’ve never taken more than a flashlight. 

When you say as long as its not directly in flight path, meaning - when plane flies over the house?

So I have a house I am going to be selling in a couple weeks, but I’m confused about what the agents are saying.  

Those same houses 2 miles away, could be a different micro-market, and rent for $1300. 

I don't have the contact info for the tenants from one of the houses because the PM never sent me a copy of the lease despite multiple requests.

Networking,  is mostly with rehabbers in the group that we sell houses to.