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.

B0011 · cost-optimal · seed 1

B0011-anneal-1-729

Simulated annealingC · meets all 17 benchmark constraints. Brief B0011

Plan drawing of a triplex on a 16.0 by 22.4 metre lot, 2 storeys, 3 dwellings, 18 rooms. Dwelling U0 (1BR) has 5 rooms totalling 58 square metres. Dwelling U1 (1BR) has 5 rooms totalling 50 square metres. Dwelling U2 (2BR) has 6 rooms totalling 107 square metres. Building footprint 120 square metres; open space 245 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.82, daylight 0.77, privacy 0.87, circulation 0.60, carbon 0.78, cost 0.51.
B0011 · anneal · seed 1scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a triplex on a 16.0 by 22.4 metre lot, 2 storeys, 3 dwellings, 18 rooms. Dwelling U0 (1BR) has 5 rooms totalling 58 square metres. Dwelling U1 (1BR) has 5 rooms totalling 50 square metres. Dwelling U2 (2BR) has 6 rooms totalling 107 square metres. Building footprint 120 square metres; open space 245 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.82, daylight 0.77, privacy 0.87, circulation 0.60, carbon 0.78, cost 0.51.

Objective vector

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

density
0.825
daylight
0.766
privacy
0.866
circulation
0.596
carbon
0.775
cost
0.506

Reported quantities

FAR proxy (GFA / lot)
0.67
site utilisation
0.886
gross floor area, m²
239.9
footprint, m²
119.9
carbon proxy, kgCO₂e/m² (A1–A3)
341
cost index / m² (unitless)
2.51
worst habitable room, daylight
0.510
circulation share of GFA
20%
open space, net of parking
62%
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
U01BR57.75
U11BR49.75
U22BR107.46
All 18 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared012.51.40 × 8.95
CORE@1shared circulationshared112.51.40 × 8.95
U1@0#0entryU103.42.75 × 1.25
U1@0#3bathroomU107.62.75 × 2.75
U1@0#4bedroom primaryU1013.62.75 × 4.95
U1@0#1livingU1015.02.80 × 5.35
U1@0#2kitchenU1010.12.80 × 3.60
U0@0#4bedroom primaryU0014.03.45 × 4.05
U0@0#3bathroomU008.13.45 × 2.35
U0@0#2kitchenU008.83.45 × 2.55
U0@0#1livingU0022.83.00 × 7.60
U0@0#0entryU004.03.00 × 1.35
U2@1#3bathroomU219.52.15 × 4.40
U2@1#5bedroom secondaryU2122.05.00 × 4.40
U2@1#4bedroom primaryU2120.54.50 × 4.55
U2@1#2kitchenU2112.12.65 × 4.55
U2@1#1livingU2128.64.85 × 5.90
U2@1#0entryU2114.84.85 × 3.05

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