I will likely just adjust the offer to cover the $ amount the seller would receive in rent.There are two factors that concern me in the potential difficulty in getting the tenants to vacate the property, 1 is they are paying very cheap rent for the stats of the home and 2 the grow room obviously was constructed with considerable effort which I anticipate may influence them to dig their heels in and potentially squat illegally. 

Making about 19K more base salary so my W2 income would spike nicely.

If you feel that the bulk of the spike in value has already happened and that all of the development going on with eventually cause rental rates to soften, then selling would be the thing to do.

There will be guaranteed spike in house price there...We can use different research to decide location also...

Oil or propane....either one could spike well above the other if the wind so much blows in the wrong direction.Heat pumps are great to a point but no way I’d rely on any of them as the primary heat source in Maine just yet.

Because I can tell you there are a whole bunch of other places in Canada that have not experienced the spike up in prices. 

Resorts keep going up and the influx of visitors-turn-investors continue to spike each month.

However, it does mean if you buy the building for $369,900, you should expect a spike in your tax bill the year after you buy it.

If they are good reasonable tenants they will not make it a big deal....if they make it a big deal, and dig in their heels, then you know what the future holds and you live with the mistake.

Inflation impacts the broad economy, not just stocks and real estate, and unless the real estate asset class spikes, generally it can be treated as a wash.