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.

B0030 · privacy-optimal · seed 1

B0030-cpsat-1-28

CP-SATE · meets all 17 benchmark constraints. Brief B0030

Plan drawing of a adu pair on a 12.9 by 18.0 metre lot, 2 storeys, 2 dwellings, 13 rooms. Dwelling U0 (2BR) has 6 rooms totalling 68 square metres. Dwelling U1 (1BR) has 5 rooms totalling 68 square metres. Building footprint 76 square metres; open space 158 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.92, daylight 0.69, privacy 0.93, circulation 0.51, carbon 0.72, cost 0.30.
B0030 · cpsat · seed 1scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a adu pair on a 12.9 by 18.0 metre lot, 2 storeys, 2 dwellings, 13 rooms. Dwelling U0 (2BR) has 6 rooms totalling 68 square metres. Dwelling U1 (1BR) has 5 rooms totalling 68 square metres. Building footprint 76 square metres; open space 158 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.92, daylight 0.69, privacy 0.93, circulation 0.51, carbon 0.72, cost 0.30.

Objective vector

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

density
0.917
daylight
0.695
privacy
0.928
circulation
0.509
carbon
0.717
cost
0.302

Reported quantities

FAR proxy (GFA / lot)
0.66
site utilisation
0.946
gross floor area, m²
153.0
footprint, m²
76.5
carbon proxy, kgCO₂e/m² (A1–A3)
362
cost index / m² (unitless)
2.83
worst habitable room, daylight
0.331
circulation share of GFA
25%
open space, net of parking
60%
courtyard void, m²
0.0
plumbing stacks
2
footprint corners
4
preferred adjacencies met
100%

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
U02BR68.36
U11BR68.35
All 13 rooms
RoomTypeDwellingStoreyw × h m
U0@0#0entryU0016.55.50 × 3.00
U0@0#1livingU0017.53.50 × 5.00
U0@0#2kitchenU007.02.00 × 3.50
U0@0#3bathroomU005.31.50 × 3.50
U0@0#4bedroom primaryU0012.03.00 × 4.00
U0@0#5bedroom secondaryU0010.02.50 × 4.00
U1@1#0entryU115.33.50 × 1.50
U1@1#1livingU1112.33.50 × 3.50
U1@1#2kitchenU1112.33.50 × 3.50
U1@1#3bathroomU1117.52.50 × 7.00
U1@1#4bedroom primaryU1121.03.00 × 7.00
CORE@0shared circulationshared08.35.50 × 1.50
CORE@1shared circulationshared18.35.50 × 1.50

Side by side