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Modern 2.5-storey townhouse

A narrow-lot townhouse built around a central stair and light well: living room at the street, kitchen and dining beside the light well, a quiet ground-floor bedroom at the back, two bedrooms upstairs and a top-floor worship room with terraces. Each floor offers alternative layouts. Designed for urban lots around 5 m wide.

Residential Version 3 Published 11 Nov 2026 Illustrative
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3D view

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Drag to rotate · scroll or pinch to zoom Generated from the model · illustrative
Storeys
2.5
Bedrooms
3
Floor area (enclosed)
182 m²
Land width × land depth
5 × 20 m
Flat roof with parapet
10.2 m

Floor plans

Ground floor 75.0 m²
1 2 3 A B C D E F Void above Stair Front yard 25.0 m² Living room 20.0 m² Kitchen 24.8 m² Landing Hall Bathroom 4.3 m² Bedroom 11.5 m² Wardrobe 5.00 m 15.00 m
Level 2 72.6 m²
1 2 3 B C D E F Stair Bedroom 15.0 m² Bathroom 5.2 m² Wardrobe 4.8 m² Balcony Study 15.6 m² Hall Void Hall Bathroom 4.3 m² Bedroom 11.5 m² Wardrobe 5.00 m 15.00 m
Level 3 34.5 m²
1 2 3 B C D E F Tank Solar heater PV panels Stair Cafe / relax 25.0 m² Hall Worship room 9.0 m² Storage 6.6 m² Void (glass roof) Dry-clothes storage 4.0 m² Hall Terrace 5.1 m² Laundry Vegetable garden 4.0 m² Drying area 4.0 m² 5.00 m 15.00 m

Design measurements

Site area
100.0 m²
site width × site depth
Building footprint
75.0 m²
Σ enclosed room areas on the ground floor
Site coverage
75 %
footprint ÷ site area
Floor area (enclosed)
182.1 m²
Σ width × depth of every enclosed room, all levels
Open area (terraces, balconies)
44.1 m²
Σ width × depth of terraces, balconies and light wells
Storeys
2.5
an upper level under half the ground-floor area counts as ½
Height to top of upper level
10.20 m
top level elevation + top level height (roof not included)
Exterior wall length
116.6 m
Σ room edges not shared with another enclosed room
Level Elevation Height Enclosed Open Ext. walls Doors / windows
Ground floor 0.00 m 3.60 m 75.0 m² 0.0 m² 40.0 m 5 / 6
Level 2 3.60 m 3.40 m 72.6 m² 6.0 m² 42.8 m 8 / 4
Level 3 7.00 m 3.20 m 34.5 m² 38.1 m² 33.8 m 3 / 6
Total 10.20 m 182.1 m² 44.1 m² 116.6 m

Stair (design assumptions)

  • Ground floor: 21 risers × 171 mm, tread 260 mm, straight flight 1.00 m, run 4.42 m ends on Sinh
  • Level 2: 21 risers × 162 mm, tread 260 mm, straight flight 1.00 m, run 5.20 m ends on Sinh
Room · Area
Ground floor Stair 1.00 × 5.20 m 5.2 m²
Ground floor Front yard · Open 5.00 × 5.00 m 25.0 m²
Ground floor Living room 5.00 × 4.00 m 20.0 m²
Ground floor Kitchen 4.00 × 6.20 m 24.8 m²
Ground floor Hall 1.00 × 1.00 m 1.0 m²
Ground floor Hall 5.00 × 1.20 m 6.0 m²
Ground floor Bathroom 1.80 × 2.40 m 4.3 m²
Ground floor Bedroom 3.20 × 3.60 m 11.5 m²
Ground floor Wardrobe 1.80 × 1.20 m 2.2 m²
Level 2 Stair 1.00 × 5.20 m 5.2 m²
Level 2 Bedroom 3.00 × 5.00 m 15.0 m²
Level 2 Bathroom 2.00 × 2.60 m 5.2 m²
Level 2 Wardrobe 2.00 × 2.40 m 4.8 m²
Level 2 Balcony · Open 5.00 × 1.20 m 6.0 m²
Level 2 Study 3.00 × 5.20 m 15.6 m²
Level 2 Hall 1.00 × 5.20 m 5.2 m²
Level 2 Light well · Open 2.00 × 1.20 m 2.4 m²
Level 2 Hall 3.00 × 1.20 m 3.6 m²
Level 2 Bathroom 1.80 × 2.40 m 4.3 m²
Level 2 Bedroom 3.20 × 3.60 m 11.5 m²
Level 2 Wardrobe 1.80 × 1.20 m 2.2 m²
Level 3 Stair 1.00 × 5.20 m 5.2 m²
Level 3 Terrace · Open 5.00 × 5.00 m 25.0 m²
Level 3 Hall 1.00 × 5.20 m 5.2 m²
Level 3 Worship room 3.00 × 3.00 m 9.0 m²
Level 3 Storage 3.00 × 2.20 m 6.6 m²
Level 3 Light well · Open 2.00 × 1.20 m 2.4 m²
Level 3 Dry-clothes storage 2.00 × 2.00 m 4.0 m²
Level 3 Hall 3.00 × 1.00 m 3.0 m²
Level 3 Terrace · Open 2.30 × 2.20 m 5.1 m²
Level 3 Laundry 0.70 × 2.20 m 1.5 m²
Level 3 Terrace · Open 2.50 × 1.60 m 4.0 m²
Level 3 Terrace · Open 2.50 × 1.60 m 4.0 m²

Deterministic measurements from the design model. Areas are measured to wall centrelines. This is not a cost estimate.

Design checks

Geometry 1

  • Room balcony-2 is not fully above a room on the level below. Overhangs need engineering review.

Layout and comfort 4

  • Kitchen (ground floor) has no window to the outside or to a light well. Why

    Living rooms, kitchens and bedrooms need a window to the outside, a light well or a terrace for daylight and air.

  • Bathroom (ground floor) has no window and needs mechanical exhaust. Why

    Without a window this wet room needs a mechanical exhaust fan to the outside.

  • Bathroom (level 2) has no window and needs mechanical exhaust. Why

    Without a window this wet room needs a mechanical exhaust fan to the outside.

  • Bathroom (level 2) is not above another wet room. Why

    Wet rooms placed over each other share one drainage shaft and avoid pipes across ceilings.

Feng shui 1

  • Rear opening w-bed-1 is in line with the main door. Why

    Feng shui: a main door in line with a rear opening lets energy pass straight through the house (xuyên tâm).

Preferences from common Vietnamese feng shui practice — explained, optional, never a requirement.

Geometry, circulation, daylight and hygiene checks for concept design — not a building-code, structural or planning check.

Illustrative sample. Not reviewed by a licensed architect or engineer. Projects keep the exact version they were created from. A newer version of this sample never changes an existing project.