standard tier · 72 briefs · 1,368 runs · results db2e24e

CityFormGen

Generative and optimisation methods for middle housing, compared under matched compute

RESEARCH GENERATIVE-DESIGN BENCHMARK - NOT CONSTRUCTION DOCUMENTATION OR CODE CERTIFICATION.

B0006 · carbon-optimal · seed 0

B0006-cpsat-0-9

CP-SATE · meets all 17 benchmark constraints. Brief B0006

Plan drawing of a adu pair on a 12.8 by 22.2 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (3BR) has 8 rooms totalling 92 square metres. Dwelling U1 (studio) has 4 rooms totalling 91 square metres. Building footprint 105 square metres; open space 181 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.94, daylight 0.58, privacy 0.78, circulation 0.56, carbon 0.79, cost 0.38.
B0006 · cpsat · seed 0scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a adu pair on a 12.8 by 22.2 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (3BR) has 8 rooms totalling 92 square metres. Dwelling U1 (studio) has 4 rooms totalling 91 square metres. Building footprint 105 square metres; open space 181 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.94, daylight 0.58, privacy 0.78, circulation 0.56, carbon 0.79, cost 0.38.

Objective vector

Proxy scores in [0, 1], higher is better. Kept as a vector; there is no overall score.

density
0.945
daylight
0.576
privacy
0.783
circulation
0.562
carbon
0.791
cost
0.382

Reported quantities

FAR proxy (GFA / lot)
0.73
site utilisation
0.964
gross floor area, m²
208.5
footprint, m²
105.0
carbon proxy, kgCO₂e/m² (A1–A3)
335
cost index / m² (unitless)
2.71
worst habitable room, daylight
0.445
circulation share of GFA
24%
open space, net of parking
63%
courtyard void, m²
0.0
plumbing stacks
4
footprint corners
4
preferred adjacencies met
0%

Benchmark constraints

Benchmark rules, not building code.

  • C01geometry valid passed
  • C02no overlap passed
  • C03within buildable passed
  • C04min room area passed
  • C05min room dimension passed
  • C06max room aspect passed
  • C07min unit area passed
  • C08unit connectivity passed
  • C09street access passed
  • C10habitable daylight passed
  • C11required adjacency passed
  • C12forbidden door passed
  • C13open space passed
  • C14courtyard provision passed
  • C15programme complete passed
  • C16unit contiguity passed
  • C17vertical support passed

Dwellings and rooms

DwellingTypeArea m²Rooms
U03BR92.58
U1studio91.04
All 14 rooms
RoomTypeDwellingStoreyw × h m
U0@0#0entryU0022.57.50 × 3.00
U0@0#1livingU0012.03.00 × 4.00
U0@0#2diningU0010.02.50 × 4.00
U0@0#3kitchenU008.02.00 × 4.00
U0@0#4bathroomU003.82.50 × 1.50
U0@0#5bedroom primaryU0012.33.50 × 3.50
U0@0#6bedroom secondaryU0014.04.00 × 3.50
U0@0#7bedroom secondaryU0010.02.50 × 4.00
U1@1#0entryU112.31.50 × 1.50
U1@1#1livingU1178.87.50 × 10.50
U1@1#2kitchenU116.32.50 × 2.50
U1@1#3bathroomU113.82.50 × 1.50
CORE@0shared circulationshared012.52.50 × 5.00
CORE@1shared circulationshared112.52.50 × 5.00

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