Bryn Davidson - Lanefab
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lanefab.com
Bryn Davidson - Lanefab
@lanefab.com
Vancouver, BC
Co-owner & Lead Designer
Lanefab Design/Build
B.Eng M.Arch

Build beautiful.
Build for a livable climate.

www.Lanefab.com

#ThickWallsAreSexy / #SingleStair / #ElectrifyEverything / #Passivhaus / #NetPositive
Tragic
November 27, 2025 at 3:53 AM
It's an urban typology. It will never be the same as suburban or rural massing, but it is a fairly common typology around the world.

The keys are narrow floor plates and lot coverage around 50%.
November 26, 2025 at 8:38 PM
"Change the cars to electric cars, and add people on the balconies"
November 26, 2025 at 8:28 PM
New Work Flow (part 3)
"add in families riding cargo bikes"
via Gemini / NanoBanana image editor
November 26, 2025 at 8:18 PM
New work flow (2 of 2)
Image to animation using google gemini
November 26, 2025 at 8:12 PM
If you want a 'pre approved' housing library, let's do passivhaus single stair stacked flats.
November 26, 2025 at 8:08 PM
Horrific and scary.
November 26, 2025 at 7:34 PM
November 26, 2025 at 7:22 PM
Yeah and the towers are closely spaced
November 26, 2025 at 7:09 PM
“Director of Fire Services Andy Yeung said that during the rescue, his crew had spotted some polystyrene boards blocking windows of multiple apartments”
November 26, 2025 at 7:05 PM
Building plan
November 26, 2025 at 7:04 PM
It’s a scissor stair building w non combustible construction (in theory) but the bamboo scaffold and plastic netting seems to be a contributor … very scary indeed
November 26, 2025 at 7:03 PM
This is an example R3 zoned lot in mt pleasant - 66x100 but no lane.

Single stair, ~50% lot coverage. 2 at grade accessible parking stalls.
November 26, 2025 at 5:12 PM
33 and 50’ lots are capped at 1.45 FSR, where as 66’ lots are 2.2 to 2.6 (w net zero bonus).

From our explorations ~2.6 feels like the “sweet spot” for walkable urbanism.
November 26, 2025 at 4:32 PM
The R3 “pre zoned” apartment zoning is a big step forward in terms of making smaller multifamily easier to permit (by trimming off the negotiated phases) - but it’s not yet tailored to single stair options and is biased against small lots, where the allowed density is much lower.
November 26, 2025 at 4:16 PM
Starting footings
November 26, 2025 at 2:59 AM
And put it all together to create incremental courtyard urbanism.

50% lot coverage. 2 to 3FSR.
35' max floor plates where there's no side yard.
12' front yard

20% side yard beyond 50' of lot depth
(or)
3 storey lane house with 4' side yard.
November 26, 2025 at 12:47 AM
Now I'm concerned for our net zero and passive house projects.
November 26, 2025 at 12:37 AM
100' (2x 50') - Party Wall - w Lane Townhouse (35 units total)

(A scissor stair approach w no unit cap might outperform the single stair on large lots, but I refuse to explore that soulless dark doubled up approach to circulation)
November 26, 2025 at 12:22 AM
I'd expect that to be codified within the bylaw
November 26, 2025 at 12:11 AM