Fourplexes pencil in most suburban contexts with rather large units. Those will probably be *townhouses* rather than flats, though!
US law gives horizontal/land subdivision many advantages over condo/strata title. The legal process is much simpler & cheaper, both to set up & to run. All kinds of things follow from this, like financing, insurance, maintenance.
Condos have an added problem: construction defects. Roof leaks are common, tough to contain. In a condo, builder & owners end up fixing all units; in a TH, could just be one.
In some states, this alone basically ended condos: cobizmag.com/construction-d…
Multiple smaller structures have an inherent phasing advantage & a big financing advantage:

More-robust market also means developers find it easier to finance THs than apts (much less condos).
Hence, lots of local LU reforms focus on making horizontal subdivision easier:
LA small lot subdivisions usually have fee-simple houses w air gaps + access easements
huduser.gov/portal/casestu…
CA bungalow courts or WA cottage courts / pocket neighborhoods
Fee-simple ADUs in Durham NC (& maybe Atlanta - also, good example of how subdividing wins on finance vs. multi-unit rentals)
kronbergua.com/post/griffin-s…
BUT these have problems!
Once you've decided that each unit has to be ground-to-sky + this being America, there are legal/practical parking minimums, that creates a de facto DUA maximum. There's a practical limit to minimum lot size
Minimizing footprint and maximizing square footage results in tall, often ungainly floor plans

As much as I like Philly's trinities, they have a limited market
One insidious way US code favors townhouses over flats: in most states, stacked flats require considerably costlier IBC (fire isolated stairs + sprinklers), but rows can be done as IRC:

Makes a bit of practical sense: fire rises

• • •

Missing some Tweet in this thread? You can try to force a refresh
 

Keep Current with Payton Chung ☃️

Payton Chung ☃️ Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

PDF

Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @paytonchung

20 Dec 19
Architects find 4-story courtyard apartments will save the world:
- lowest embodied CO2 for buildings+infrastructure
- lowest operating energy demand
- 94% land savings
- density=🚋🚌🚶‍♀️🚴‍♀️ energy savings
global.ctbuh.org/resources/pape…
Yes, you too can save energy… AND live more elegantly!

4-story courtyard apartments are common along Chicago's lakefront; #1-3 are particularly grand examples around Rogers Park. Courtyards were a common way to get sunlight & ventilation before aircon (#4's in Singapore)
Surprising source arguing for low-rise #MissingMiddleHousing: AS+GG is an architecture firm specializing in supertall high-rises; designed current world’s tallest building + its even taller successor.
dezeen.com/tag/adrian-smi…
Published by CTBUH, the skyscraper study club.
Read 8 tweets
19 Sep 19
Opening session: For #HQ2, DC region had infrastructure ready: human capital + physical capital. Uniquely, the Crystal City site was *office* backfill. #ULIFall
Confirms my suspicion about readiness westnorth.com/2017/09/11/wha…
*Office* backfill matters: other touted sites were previously industrial, but that requires very different infrastructure. Unlike any other site (besides LIC) Crystal City had plug-and-play transit & workforce access.
Tim Sands: VT had shovel-ready plans for innovation campus. #HQ2 was catalyst to "pull the plan out of the drawer." New students already excited, they cite it as one reason why VT was over-enrolled this fall.

Virginia's leadership had readiness, timing, alignment, trust.
Read 12 tweets

Did Thread Reader help you today?

Support us! We are indie developers!


This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Too expensive? Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal Become our Patreon

Thank you for your support!

Follow Us on Twitter!