The Butterfly — ¼C Modern

The plan

Every square foot, accounted for.

Program2 bed + flex · 1 bath + powder

Floor area1,260 sq ft · 1 storey

StructureTimber frame on stone piers

RoofButterfly, central scupper

EnvelopeStep Code 5 target · ACH50 ≤ 1.0, blower-door verified

Signaturesunken conversation pit · clerestory band

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.

Kitchen, bath and bedrooms line the north clerestory band so the whole front of the plan can stay open around the sunken conversation pit at the centre of the house.

The honest number

What it should cost to build.

Site prep + servicesexcavation, utilities to lot line hookups$24,500

Foundationslab or crawlspace, insulated$41,000

Structure + framingpost and beam or conventional, roof structure$65,500

Enveloperoofing, windows + doors, cladding, insulation + air sealing to ACH50 ≤ 1.0$98,500

Mechanical / electrical / plumbingheat pump, HRV, full rough-in + fixtures$74,000

Interior finishesfloors, millwork, kitchen, baths, paint$82,000

GC + contingencysupervision, permits admin, 5% contingency$24,500

Hard cost$410,000

Band $377,000 to $443,000 · $325/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.

Every square foot, accounted for.

What it should cost to build.

The rooms this plan is for.