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.

B0029 · carbon-optimal · seed 1

B0029-sketch-1-1035

Random sketch + repairF′ · meets all 17 benchmark constraints. Brief B0029

Plan drawing of a triplex on a 14.1 by 21.5 metre lot, 2 storeys, 3 dwellings, 17 rooms. Dwelling U0 (studio) has 4 rooms totalling 37 square metres. Dwelling U1 (1BR) has 5 rooms totalling 77 square metres. Dwelling U2 (2BR) has 6 rooms totalling 114 square metres. Building footprint 128 square metres; open space 171 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 1.00, daylight 0.37, privacy 0.83, circulation 0.60, carbon 0.79, cost 0.49.
B0029 · sketch · seed 1scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a triplex on a 14.1 by 21.5 metre lot, 2 storeys, 3 dwellings, 17 rooms. Dwelling U0 (studio) has 4 rooms totalling 37 square metres. Dwelling U1 (1BR) has 5 rooms totalling 77 square metres. Dwelling U2 (2BR) has 6 rooms totalling 114 square metres. Building footprint 128 square metres; open space 171 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 1.00, daylight 0.37, privacy 0.83, circulation 0.60, carbon 0.79, cost 0.49.

Objective vector

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

density
1.000
daylight
0.372
privacy
0.827
circulation
0.599
carbon
0.790
cost
0.487

Reported quantities

FAR proxy (GFA / lot)
0.84
site utilisation
1.000
gross floor area, m²
255.4
footprint, m²
127.7
carbon proxy, kgCO₂e/m² (A1–A3)
336
cost index / m² (unitless)
2.55
worst habitable room, daylight
0.210
circulation share of GFA
22%
open space, net of parking
53%
courtyard void, m²
0.0
plumbing stacks
3
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
U0studio37.14
U11BR77.25
U22BR114.36
All 17 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared013.49.90 × 1.35
CORE@1shared circulationshared113.49.90 × 1.35
U1@0#3bathroomU107.44.50 × 1.65
U1@0#0entryU108.95.40 × 1.65
U1@0#4bedroom primaryU1012.24.00 × 3.05
U1@0#2kitchenU1012.44.00 × 3.10
U1@0#1livingU1036.35.90 × 6.15
U0@0#1livingU0016.54.40 × 3.75
U0@0#2kitchenU0010.45.50 × 1.90
U0@0#0entryU006.33.40 × 1.85
U0@0#3bathroomU003.92.10 × 1.85
U2@1#2kitchenU2127.55.50 × 5.00
U2@1#3bathroomU2113.25.50 × 2.40
U2@1#5bedroom secondaryU2122.85.50 × 4.15
U2@1#0entryU2113.24.40 × 3.00
U2@1#1livingU2123.54.40 × 5.35
U2@1#4bedroom primaryU2114.14.40 × 3.20

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