Inside the $1.85 million listing that comes with two San Francisco homes for the price of one, thanks to an extra single-family 'in-law' unit in the backyard

The home(s) sit in San Francisco's Inner Sunset neighborhood, a district known for its relatively more affordable homes and family-oriented environment.

The home's facade is painted in a calming teal color.

It was built in 1913, seven years after the great earthquake and fires that ravaged the city and ultimately spurred a widespread real-estate boom to rebuild.

This is the entrance to the front home, whose address is 1725 10th Avenue.

There's a separate, independent entrance to the second property, whose address is 1723 10th Avenue, behind the front home.

Residents would navigate down a corridor, through a door, up a small set of stairs, and then across the courtyard to get to it.

The foyer of the front home opens up to a wooden staircase leading to the second level ...

… and also to a living room with a wood-burning fireplace and original wood trims.

There's a huge window with beautiful stained glass, adding a pop of character.

Off of the living room is a formal dining room.

There are built-in cabinets and, ever so quaintly, a built-in bench by the window for a reading nook. The second home can be seen through the window.

The kitchen has a brand-new stove, stove hood, and refrigerator.

A blue-colored oven and intricately patterned backsplash add some pizzazz to the otherwise stark white kitchen.

Upstairs is the master bedroom with front-facing windows.

Two more bedrooms are on this level.

One of them is currently staged as a kid's room.

There's one full bathroom on the top floor as well.

Back downstairs is a laundry room …

… and somewhere in the house is a "1/4 bath" which, according to the listing, may or may not be legal.

Source: Jason Chan of Barbagelata Real Estate

The backyard of the front home opens up to a small, serene courtyard.

Walk a short distance and you'll find the second single-family home, or the cottage as the listing calls it.

A small, partially enclosed porch is at the entrance.

Inside is one bedroom ...

... one bathroom ...

... a large kitchen ...

... and a living room.

This second home could be used in a number of ways.

As SF Gate points out, the owners could live in the front house and rent out the in-law unit or vice versa, a somewhat common course of action in the city. A cruise through the rental listings on Craigslist will turn up a few similar living situations.

Source: Craigslist and SF Gate

What could also be a possible option, depending on the future owners' situation, is using the in-law unit for its originally-designed purpose: to house older relatives on-site while still maintaining independence and privacy for everyone involved.

Regardless of the arrangements, the second home may be used to house more San Franciscans in some capacity, a much-needed feat in the city's housing crunch.