Depending on your climate and floor plan, one of these can heat the entire space.

Given the current climate how much are they charging?

The cheapest house I own (in Lansing )has property taxes that are around $1800/year, and that's for a house that I bought for 30k.If you plan on holding for decades, the wear and tear on a house with a tile roof, made of block, on a slab, is much less than a climate that has regular rainfall, has a roof that needs replacement every 25 years, and is subjest to more exterior forces, including water infiltration in a basement.Bottom line is that you'll have to pay more up front, but my two cents is that the cash-flow is better and the holding costs are much lower.Good luck with whatever you choose

They are used to heat garages in my climate, but only because it is outside the living area and opening the garage door gives frequent venting.

San Diego rental pool is great and not many people on here may know, it's quite transient as well with military base and folks who just want to experience the most comfortable climate in the US. 

But maybe Jeff Bezos is looking for a warmer climate that is on the west coast. 

We'll see how the legal climate goes.

We used to be a very LL friendly state, but as the climate across the country is changing, we are too.  

Vegas would be great climate wise but I am stuck in the Calgary area only for inner city sw projects.

I certainly would not purchase this property if I did not expect continuing rent appreciation as it is detached duplex (two tenants are typically twice the work of one) and the current cash flow is too low for me to justify the effort.So far the extent of our value adds has been rehabs with potentially adding bathrooms.I have significant confidence of continued rent increases over the next few years at least: 1) rents lag property appreciation. 2) vacancy rate is real low. 3) cost to add more than ADU is high - it coasts around $100K to break ground for residential in San Diego (permits, surveys, etc.). 4) Minimum wage increases already approved.  5) one of the best weather climates in the US.  6) rising population: one recent study had San Diego as 13 highest population increase of large US cities.  7) geographically constrained: Constrained by Mexico to the South, Pacific to the West, Camp Pendleton to the North, and the East quickly gets harsh.  8) good and varied employment: Hard to manage a employment category melt down that could impact the range of employment in San Diego.  9) environmentally diverse from mountains to desert to beach to happening urban center.This weekend I plan to send 2 rent increase notices.