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.

B0070 · density-optimal · seed 2

B0070-anneal-2-694

Simulated annealingC · meets all 17 benchmark constraints. Brief B0070

Plan drawing of a rowhouse on a 25.5 by 27.5 metre lot, 2 storeys, 4 dwellings, 36 rooms. Dwelling U0 (2BR) has 9 rooms totalling 186 square metres. Dwelling U1 (2BR) has 9 rooms totalling 148 square metres. Dwelling U2 (2BR) has 9 rooms totalling 185 square metres. Dwelling U3 (2BR) has 9 rooms totalling 140 square metres. Building footprint 329 square metres; open space 365 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.99, daylight 0.63, privacy 0.88, circulation 0.53, carbon 0.89, cost 0.69.
B0070 · anneal · seed 2scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a rowhouse on a 25.5 by 27.5 metre lot, 2 storeys, 4 dwellings, 36 rooms. Dwelling U0 (2BR) has 9 rooms totalling 186 square metres. Dwelling U1 (2BR) has 9 rooms totalling 148 square metres. Dwelling U2 (2BR) has 9 rooms totalling 185 square metres. Dwelling U3 (2BR) has 9 rooms totalling 140 square metres. Building footprint 329 square metres; open space 365 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.99, daylight 0.63, privacy 0.88, circulation 0.53, carbon 0.89, cost 0.69.

Objective vector

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

density
0.988
daylight
0.630
privacy
0.882
circulation
0.530
carbon
0.893
cost
0.695

Reported quantities

FAR proxy (GFA / lot)
0.94
site utilisation
0.992
gross floor area, m²
658.4
footprint, m²
329.2
carbon proxy, kgCO₂e/m² (A1–A3)
299
cost index / m² (unitless)
2.22
worst habitable room, daylight
0.219
circulation share of GFA
23%
open space, net of parking
53%
courtyard void, m²
0.0
plumbing stacks
8
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
U02BR186.39
U12BR147.79
U22BR184.69
U32BR139.79
All 36 rooms
RoomTypeDwellingStoreyw × h m
STAIR:U0@0circulationU0013.51.50 × 9.00
STAIR:U0@1circulationU0113.51.50 × 9.00
U0@0#1livingU0046.45.15 × 9.00
U0@0#0entryU0017.03.70 × 4.60
U0@0#3bathroomU008.93.70 × 2.40
U0@0#2kitchenU007.43.70 × 2.00
U0@1#6bedroom secondaryU0140.54.50 × 9.00
U0@1#7bathroomU018.54.35 × 1.95
U0@1#5bedroom primaryU0130.74.35 × 7.05
STAIR:U1@0circulationU1014.32.05 × 7.00
STAIR:U1@1circulationU1114.32.05 × 7.00
U1@0#3bathroomU105.43.10 × 1.75
U1@0#0entryU106.23.10 × 2.00
U1@0#2kitchenU1010.13.10 × 3.25
U1@0#1livingU1037.85.40 × 7.00
U1@1#7bathroomU114.92.95 × 1.65
U1@1#6bedroom secondaryU1115.82.95 × 5.35
U1@1#5bedroom primaryU1138.95.55 × 7.00
STAIR:U2@0circulationU2015.31.75 × 8.75
STAIR:U2@1circulationU2115.31.75 × 8.75
U2@0#2kitchenU2017.93.40 × 5.25
U2@0#0entryU206.83.40 × 2.00
U2@0#3bathroomU205.13.40 × 1.50
U2@0#1livingU2047.35.40 × 8.75
U2@1#7bathroomU2112.55.10 × 2.45
U2@1#5bedroom primaryU2132.15.10 × 6.30
U2@1#6bedroom secondaryU2132.43.70 × 8.75
STAIR:U3@0circulationU3010.11.50 × 6.75
STAIR:U3@1circulationU3110.11.50 × 6.75
U3@0#2kitchenU3013.93.30 × 4.20
U3@0#3bathroomU308.43.30 × 2.55
U3@0#0entryU3012.25.55 × 2.20
U3@0#1livingU3025.35.55 × 4.55
U3@1#6bedroom secondaryU317.63.45 × 2.20
U3@1#7bathroomU3115.73.45 × 4.55
U3@1#5bedroom primaryU3136.55.40 × 6.75

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