¼C Modern ✳

The catalog · No. 15

The Slim

Sixteen feet wide, three storeys of daylight, a spiral stair to the roof. 2 bed and 1.5 bath, 1,120 square feet. Small, honest, tight.

The Slim design study render
Study No. 15 · design study render

The two faces

Modest to the street, open to the garden.

From the street: a calm, low face. The house saves its glass for the garden.
From the street: a calm, low face. The house saves its glass for the garden.
The garden side opens wide in glass and warm light. The face the family lives with.
The garden side opens wide in glass and warm light. The face the family lives with.
The way in, sheltered under deep eaves, a lit door at dusk.
The way in, sheltered under deep eaves, a lit door at dusk.

The plan

Every square foot, accounted for.

Program2 bed · 1.5 bath
Floor area1,120 sq ft · 2 storeys
StructureConventional frame, party-wall ready
RoofRoof deck, spiral access
EnvelopeStep Code 5 target · ACH50 ≤ 1.0, blower-door verified
Signature16 ft frontage · roof deck

Plan drawn to the render. Room dimensions on the drawing; areas sum to the stated floor area. A construction set follows the House No. 1 pipeline.

GROUND UPPER ROOF DECK UP CL PWDR DINING 14'×10' KITCHEN 12'×7' LIVING 14'×13' ENTRY DN W/D SPIRAL UP BALC BED 2 14'×11' BED 1 14'×13' BATH 8'×8' SKYLIGHT PLANTERS SPIRAL DN ROOF DECK 14'×33' 16'-0" 35'-0" 0510 FT N
Sixteen feet of frontage stacked three ways, living below, bedrooms above, and the whole footprint given back as a roof deck at the top of the spiral stair.

The honest number

What it should cost to build.

Site prep + servicesexcavation, utilities to lot line hookups$23,000
Foundationslab or crawlspace, insulated$38,000
Structure + framingpost and beam or conventional, roof structure$61,000
Enveloperoofing, windows + doors, cladding, insulation + air sealing to ACH50 ≤ 1.0$91,500
Mechanical / electrical / plumbingheat pump, HRV, full rough-in + fixtures$68,500
Interior finishesfloors, millwork, kitchen, baths, paint$76,500
GC + contingencysupervision, permits admin, 5% contingency$23,000
Hard cost$382,000

Band $351,500 to $412,500 · $341/sq ft

Cost model v0.1: Okanagan 2026 hard-cost bands from a $/sq ft basis, stated as an estimate, not a quote. Excludes land, design and permit soft costs, and GST. As the House No. 1 build sheet gathers real supplier and trade receipts, receipts replace estimates here, line by line.

Where the money goes further

Small choices that hold the number down.

01Slab-on-grade, no basement

Slab-on-grade, no basement

One pour is the foundation and the finished floor. No basement to dig or to heat.

02One roof, framed simply

One roof, framed simply

A single roof deck form with deep overhangs. The cheaper roof to build and to keep dry.

03Stock materials, standard sizes

Stock materials, standard sizes

Cedar and fibre-cement in the sizes they ship in. Almost nothing is cut to waste.

Life inside

The rooms this plan is for.

Living room under conventional frame, a full wall of glass to the outside.
Living room under conventional frame, a full wall of glass to the outside.
An honest kitchen: plywood, butcher block, a window on the yard.
An honest kitchen: plywood, butcher block, a window on the yard.
The rooftop deck and the long view.
The rooftop deck and the long view.

The details

What you notice up close.

16 ft frontage, up close.
16 ft frontage, up close.
Roof deck.
Roof deck.
Where the roof meets the glass, the light gets in low and long.
Where the roof meets the glass, the light gets in low and long.

Grows when you do

Built small, drawn to expand.

The Slim is drawn to grow. A slab pad and a framed opening are set at the start, so another bedroom, a studio, or a suite lands on the side already built for it, with no re-doing what is there.

TodayDay one: a blank end-wall and a slab pad left ready.
Day one: a blank end-wall and a slab pad left ready.
When you need itLater: a matching cedar wing on that pad. Same roof, one more room.
Later: a matching cedar wing on that pad. Same roof, one more room.
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