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I think there are lots of great precedents for small single story main street buildings that work well.  Above are some studies David Kim and Will Dowdy did on small, shallow storefront spaces that could be used as parking lot liners or in conjunction  with small apartment buildings and cottage courts located behind the small commercial/flex building to provide mixed use without requiring the use of commercial steel pipe fire sprinklers that can be required if the residential and non-residential Occupancy Types were combined into in one mixed use building.

The intent was provide a wide/shallow space that could be flexible.  We settled on a depth of 26' as this leaves an 18' dimension between the 8 x 8 accessible restroom and the storefront.  We were also looking to keep any columns or other intermediate structure out of the floor plan and 20'-32' of depth is readily spanned without going nuts on the truss design.  You can get pre-engineered bar joists at 40' long, but we wanted to keep the construction technique within the skills of residential trades.

Keeping the depth modest allows for daylighting of the space from a transom and light shelf over the storefront and awning.  Spaces this small are easily heated and cooled with a ductless mini-split heat pump/air conditioner.

Using a single pitch roof truss, sloping from the street side to the rear, with a parapet on the street side can provide lots of room for signage, while screening compressors or kitchen hood fans from the street view. 

Buildings that are flexible enough to house small and inexpensive workspace for retail, services, food and drink, etc. should be in the Small Developer's tool box.  You may know an under-utilized parking lot that could be lined with something like this.  Could be good way to follow up on testing the location with some food carts.

Steve Mouzon has some very interesting thoughts along these lines.  His blog has better production values than mine does, so I encourage you to click through and check it out.  

Steve Mouzon's Blog Original Green

 

Writing is hard.  Sarah makes it look easy.  Take a look at how she describes the mechanics of a team exercise from the Incremental Development Alliance's Small Developer Boot Camp.  She lays out that rather technical set of tasks and rolls right into the real world limitations of the moldering zoning codes you find in most cities these days.

Accidental Urbanist

My favorite quote from Sarah:

"Everyone has sexy dreams, but as a developer it’s important to maintain a long-term, monogamous relationship with math."

This afternoon I got another phone call from someone convinced that they should develop condominiums and sell them. I am really struggling to find a better way to communicate on this really basic point. I feel like the guy in the Far Side cartoon above.

 

If you have the know how required to produce buildings that people live and/or work in, using that very valuable resource to produce houses or condos that you sell to people has a huge opportunity cost.  Opportunity cost is a big deal, as in lost opportunity and wasted opportunity.  What else could you have been doing instead of building and selling?

I cannot emphasize this enough. If you have the wherewithal to build something, Don't sell it.  Hold onto it and rent out space in your building. The market for new or renovated rental buildings is hugely under-supplied in most markets, particularly in anything even remotely resembling walkable urbanism.  There are lots of places where a couple of decent buildings will have a wonderful effect upon the neighborhood.  The people who fill in the missing teeth in the neighborhood will do well, while doing good.

 

Our culture has created completely unrealistic expectations for what is supposed to happen when you buy a home. Avoid putting yourself in a place where you have to deliver on all the delusional nonsense that fills the heads of people who watch too much HGTV. Build to hold and rent. Build in places where the amenities are exotic stuff like proximity to transit, day care, $2 coffee and a genuine local bar.