The home has a detached garage in back and is zoned for a possible ADU/carriage house.

(Super rare and super lucky)My plan is to build a carriage house above garage 600 sq ft, 1 bed/1 ba.Cost to build: 150KAssuming Rental income approx $1100/mo (conservative)Currently owe 290K on current mortgage (4.1% 30yr)80K cash on handEverything is ready to go: architecture, engineering, permit is almost ready to submit. 

Primary was built in 1888 with Carriage house built around 1900.

But most any garage makes a poor start to future living spaces like a horse and carriage house is usually ill fitted beginnings to a garage.Another separate topic on self driving cars.

I'm constantly trying to get my clients to see the value in a home with a basement apartment or carriage house as those are allowed under Denver's new Airbnb law. 

If you're considering a property, enter the address into Airdna along with beds, baths, # guests, and it will give you a decent idea of expected income.If you're concerned about privacy, you may consider a small multifamily property or a property with an ADU (mother-in-law suite, carriage house, etc) as opposed to renting out the basement.You'll want to work with an agent familiar with these things, and he or she can walk you through it.Good luck!

Don't put the carriage in front of the horse. 

., carriage houses, casitas etc. 

Added 3rd 4th bed to 2 bed with attached unused storage rooms, sheds, carriage house etc.

This property was situated on a large lot, and included 4 units in the main home, with a single studio unit carriage house to the right of the home.