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.

B0032 · privacy-optimal · seed 2

B0032-cpsat-2-2

CP-SATE · meets all 17 benchmark constraints. Brief B0032

Plan drawing of a duplex on a 13.9 by 23.0 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (2BR) has 6 rooms totalling 76 square metres. Dwelling U1 (2BR) has 6 rooms totalling 64 square metres. Building footprint 89 square metres; open space 233 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.87, daylight 0.82, privacy 0.94, circulation 0.58, carbon 0.69, cost 0.41.
B0032 · cpsat · seed 2scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a duplex on a 13.9 by 23.0 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (2BR) has 6 rooms totalling 76 square metres. Dwelling U1 (2BR) has 6 rooms totalling 64 square metres. Building footprint 89 square metres; open space 233 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.87, daylight 0.82, privacy 0.94, circulation 0.58, carbon 0.69, cost 0.41.

Objective vector

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

density
0.866
daylight
0.824
privacy
0.938
circulation
0.576
carbon
0.689
cost
0.412

Reported quantities

FAR proxy (GFA / lot)
0.52
site utilisation
0.913
gross floor area, m²
166.8
footprint, m²
89.3
carbon proxy, kgCO₂e/m² (A1–A3)
372
cost index / m² (unitless)
2.66
worst habitable room, daylight
0.675
circulation share of GFA
19%
open space, net of parking
72%
courtyard void, m²
0.0
plumbing stacks
1
footprint corners
4
preferred adjacencies met
50%

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
U02BR75.86
U12BR64.06
All 14 rooms
RoomTypeDwellingStoreyw × h m
U0@0#0entryU002.31.50 × 1.50
U0@0#1livingU0016.55.50 × 3.00
U0@0#2kitchenU0016.53.00 × 5.50
U0@0#3bathroomU006.02.00 × 3.00
U0@0#4bedroom primaryU0016.53.00 × 5.50
U0@0#5bedroom secondaryU0018.04.50 × 4.00
U1@1#0entryU112.31.50 × 1.50
U1@1#1livingU1119.35.50 × 3.50
U1@1#2kitchenU118.82.50 × 3.50
U1@1#3bathroomU115.02.50 × 2.00
U1@1#4bedroom primaryU1117.53.50 × 5.00
U1@1#5bedroom secondaryU1111.32.50 × 4.50
CORE@0shared circulationshared013.53.00 × 4.50
CORE@1shared circulationshared113.53.00 × 4.50

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