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.

B0062 · privacy-optimal · seed 1

B0062-nsga2-1-1406

NSGA-IID · meets all 17 benchmark constraints. Brief B0062

Plan drawing of a duplex on a 16.1 by 18.5 metre lot, 2 storeys, 2 dwellings, 13 rooms. Dwelling U0 (1BR) has 5 rooms totalling 91 square metres. Dwelling U1 (2BR) has 6 rooms totalling 91 square metres. Building footprint 103 square metres; open space 188 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.84, daylight 0.52, privacy 0.98, circulation 0.52, carbon 0.78, cost 0.44.
B0062 · nsga2 · seed 1scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a duplex on a 16.1 by 18.5 metre lot, 2 storeys, 2 dwellings, 13 rooms. Dwelling U0 (1BR) has 5 rooms totalling 91 square metres. Dwelling U1 (2BR) has 6 rooms totalling 91 square metres. Building footprint 103 square metres; open space 188 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.84, daylight 0.52, privacy 0.98, circulation 0.52, carbon 0.78, cost 0.44.

Objective vector

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

density
0.841
daylight
0.521
privacy
0.977
circulation
0.524
carbon
0.778
cost
0.442

Reported quantities

FAR proxy (GFA / lot)
0.69
site utilisation
0.897
gross floor area, m²
206.8
footprint, m²
103.4
carbon proxy, kgCO₂e/m² (A1–A3)
340
cost index / m² (unitless)
2.61
worst habitable room, daylight
0.300
circulation share of GFA
21%
open space, net of parking
65%
courtyard void, m²
0.0
plumbing stacks
3
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
U01BR91.15
U12BR91.16
All 13 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared012.31.40 × 8.80
CORE@1shared circulationshared112.31.40 × 8.80
U0@0#1livingU0036.85.80 × 6.35
U0@0#2kitchenU0014.25.80 × 2.45
U0@0#0entryU0012.14.55 × 2.65
U0@0#4bedroom primaryU0018.94.55 × 4.15
U0@0#3bathroomU009.14.55 × 2.00
U1@1#1livingU1125.63.65 × 7.00
U1@1#0entryU116.63.65 × 1.80
U1@1#2kitchenU1111.22.20 × 5.10
U1@1#4bedroom primaryU1122.94.50 × 5.10
U1@1#5bedroom secondaryU1118.14.90 × 3.70
U1@1#3bathroomU116.71.80 × 3.70

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