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.

B0055 · knee point · seed 2

B0055-sketch-2-561

Random sketch + repairF′ · meets all 17 benchmark constraints. Brief B0055

Plan drawing of a courtyard on a 21.7 by 26.3 metre lot, 2 storeys, 4 dwellings, 25 rooms. Dwelling U0 (1BR) has 5 rooms totalling 69 square metres. Dwelling U1 (2BR) has 6 rooms totalling 101 square metres. Dwelling U2 (2BR) has 6 rooms totalling 101 square metres. Dwelling U3 (2BR) has 6 rooms totalling 69 square metres. Building footprint 237 square metres; open space 325 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.81, daylight 0.74, privacy 0.85, circulation 0.50, carbon 0.82, cost 0.65.
B0055 · sketch · seed 2scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a courtyard on a 21.7 by 26.3 metre lot, 2 storeys, 4 dwellings, 25 rooms. Dwelling U0 (1BR) has 5 rooms totalling 69 square metres. Dwelling U1 (2BR) has 6 rooms totalling 101 square metres. Dwelling U2 (2BR) has 6 rooms totalling 101 square metres. Dwelling U3 (2BR) has 6 rooms totalling 69 square metres. Building footprint 237 square metres; open space 325 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.81, daylight 0.74, privacy 0.85, circulation 0.50, carbon 0.82, cost 0.65.

Objective vector

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

density
0.810
daylight
0.736
privacy
0.849
circulation
0.499
carbon
0.816
cost
0.651

Reported quantities

FAR proxy (GFA / lot)
0.83
site utilisation
0.876
gross floor area, m²
474.6
footprint, m²
237.3
carbon proxy, kgCO₂e/m² (A1–A3)
326
cost index / m² (unitless)
2.29
worst habitable room, daylight
0.241
circulation share of GFA
49%
open space, net of parking
58%
courtyard void, m²
34.5
plumbing stacks
4
footprint corners
8
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
U01BR68.75
U12BR101.36
U22BR101.36
U32BR68.76
All 25 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared067.317.70 × 3.80
CORE@1shared circulationshared167.317.70 × 3.80
U1@0#0entryU1029.28.85 × 3.30
U1@0#3bathroomU1012.92.65 × 4.85
U1@0#5bedroom secondaryU108.72.65 × 3.30
U1@0#1livingU1026.06.20 × 4.20
U1@0#4bedroom primaryU1016.64.20 × 3.95
U1@0#2kitchenU107.92.00 × 3.95
U2@1#0entryU2138.58.85 × 4.35
U2@1#3bathroomU2110.23.25 × 3.15
U2@1#1livingU2117.65.60 × 3.15
U2@1#5bedroom secondaryU2112.43.15 × 3.95
U2@1#4bedroom primaryU2112.43.15 × 3.95
U2@1#2kitchenU2110.12.55 × 3.95
U0@0#0entryU0016.12.35 × 6.85
U0@0#3bathroomU0010.63.65 × 2.90
U0@0#4bedroom primaryU0014.43.65 × 3.95
U0@0#1livingU0014.03.05 × 4.60
U0@0#2kitchenU0013.62.95 × 4.60
U3@1#0entryU3115.92.55 × 6.25
U3@1#5bedroom secondaryU3113.32.55 × 5.20
U3@1#1livingU3114.13.45 × 4.10
U3@1#3bathroomU315.71.50 × 3.80
U3@1#2kitchenU317.41.95 × 3.80
U3@1#4bedroom primaryU3112.23.45 × 3.55

Side by side