The Collective at One Sophia Unit Selector
District 9 · 367 homes · 99-year leasehold · Launched November 2024
Artist's impression: Sophia Residential Pte. Ltd. and Sophia Commercial Pte. Ltd.
All 26 stacks of The Collective at One Sophia (1A and 1B Sophia Road, District 9, 367 homes, 99-year leasehold) in 3D on the real map, next to the buildings around them at their real heights. Pick a stack and a storey to see which way it faces, what the window looks at, and how many hours of sun reach it once the neighbouring blocks are counted.
Every home is drawn floor by floor, coloured by unit type, in the same colours as the developer’s unit distribution chart. Tap a stack or its number to pick it. Drag to move the map; hold Ctrl or Command and drag (or right-drag) to turn and tilt it. On a phone, two fingers move, twist and tilt it, and one finger does in full screen. Zoom in to see every stack number. Navy: your stack. Orange: your storey. Dashed gold line: the view straight out of the window. Dark patches: shadows of the taller buildings at 15:00 on 1/10.
- Studio
- 1-Bedroom Suite
- 1-Bedroom Premium
- 1-Bedroom + Study
- 2-Bedroom Deluxe
- 2-Bedroom Deluxe + Study
- 2-Bedroom Premium
- 2-Bedroom Premium + Study
- 3-Bedroom Premium
- 3-Bedroom Luxury
Every stack at a glance
Computed for the middle storey of each tower (storey 10 in the 19-storey blocks), or the middle of its own storeys for a stack that does not have that storey. Sun columns are hours of direct sun on the window on 21 June and 21 December after shading by other buildings; “Afternoon sun” lists the months with an hour or more after 2pm. Open the tool for any other storey or date.
Show the table of all 26 stacksHide the table
Block 1A · 19 storeys · 12 stacks
| Stack | Type | Faces | Looks onto | Buildings straight ahead | 21 Jun | 21 Dec | Afternoon sun |
|---|---|---|---|---|---|---|---|
| #21 | 1-Bedroom Suite | NNE 16° | Sophia Road, 11 m | Wilkie Edge (Citadines Mount Sophia), 42 m (seen over from storey 11) | 12.1h | 0h | Apr–Aug |
| #22 | 2-Bedroom Deluxe | NNE 16° | Sophia Road, 12 m | Wilkie Edge (Citadines Mount Sophia), 41 m (seen over from storey 11) | 12.1h | 0h | Apr–Aug |
| #23 | 3-Bedroom Luxury | NNE 16° | Sophia Road, 11 m | Wilkie Edge (Citadines Mount Sophia), 39 m (seen over from storey 11) | 12.2h | 0h | Apr–Aug |
| #24 (storeys 3 to 4) | 1-Bedroom Premium | SSW 196° | Azure Pool, 6 m | Block 1B, 13 m (at least as tall as this stack) | 0h | 1.5h | Mar–Apr, Aug–Sep |
| #24 (storeys 5 to 19) | 2-Bedroom Premium | SSW 196° | Azure Pool, 6 m | Block 1B, 13 m (at least as tall as this stack) | 0h | 2.7h | Feb–Apr, Aug–Oct |
| #25 | 2-Bedroom Premium + Study | SSW 196° | Azure Pool, 6 m | Block 1B, 13 m (at least as tall as this stack) | 0h | 3.3h | Feb–Apr, Aug–Oct |
| #26 | 2-Bedroom Deluxe + Study | SSW 196° | Azure Pool, 6 m | Block 1B, 13 m (at least as tall as this stack) | 0h | 3.8h | Feb–Apr, Aug–Oct |
| #27 | 2-Bedroom Deluxe + Study | SSW 196° | Azure Spa, 6 m | Block 1B, 13 m (at least as tall as this stack) | 0h | 6.8h | Aug–Apr |
| #28 | 2-Bedroom Premium | SSW 196° | Azure Spa, 6 m | Block 1B, 13 m (at least as tall as this stack) | 0h | 8.9h | Aug–Apr |
| #29 (storey 5) | 1-Bedroom Premium | NNE 16° | Sophia Road, 9 m | Wilkie Edge (Citadines Mount Sophia), 42 m (at least as tall as this stack) | 10.2h | 0h | Apr–Aug |
| #29 (storeys 6 to 19) | 2-Bedroom Premium | NNE 16° | Sophia Road, 9 m | Wilkie Edge (Citadines Mount Sophia), 42 m (seen over from storey 11) | 11.3h | 0h | Apr–Aug |
| #30 | 1-Bedroom Suite | NNE 16° | Sophia Road, 10 m | Wilkie Edge (Citadines Mount Sophia), 42 m (seen over from storey 11) | 12.1h | 0h | Apr–Aug |
Block 1B · 19 storeys · 14 stacks
| Stack | Type | Faces | Looks onto | Buildings straight ahead | 21 Jun | 21 Dec | Afternoon sun |
|---|---|---|---|---|---|---|---|
| #31 | 1-Bedroom Suite | NNE 16° | Azure Pool, 2 m | Block 1A, 13 m (at least as tall as this stack) | 6.7h | 0h | Apr–Aug |
| #32 | 1-Bedroom + Study | NNE 16° | Azure Pool, 2 m | Block 1A, 13 m (at least as tall as this stack) | 6.9h | 0h | Apr–Aug |
| #33 | 1-Bedroom + Study | NNE 16° | Azure Pool, 2 m | Block 1A, 13 m (at least as tall as this stack) | 7.5h | 0h | Apr–Aug |
| #34 | 3-Bedroom Premium | NNE 16° | Azure Pool, 2 m · Fitness Zone, 34 m | Block 1A, 13 m (at least as tall as this stack) | 8.8h | 0h | Apr–Aug |
| #35 | 2-Bedroom Deluxe | SSW 196° | Out of the estate: Sophia Residence (13 Sophia Road), 74 m | Sophia Residence (13 Sophia Road), 74 m (seen over from storey 8) | 0h | 10.8h | Oct–Mar |
| #36 | Studio | SSW 196° | Out of the estate: Sophia Residence (15 Sophia Road), 14 m | Sophia Residence (15 Sophia Road), 14 m (seen over from storey 8) | 0h | 11.8h | Sep–Mar |
| #37 | Studio | SSW 196° | Out of the estate: Sophia Residence (15 Sophia Road), 16 m | Sophia Residence (15 Sophia Road), 16 m (seen over from storey 8) | 0h | 11.8h | Aug–Apr |
| #38 | Studio | SSW 196° | Out of the estate: Sophia Residence (15 Sophia Road), 15 m | Sophia Residence (15 Sophia Road), 15 m (seen over from storey 8) | 0h | 11.8h | Aug–Apr |
| #39 | Studio | SSW 196° | Out of the estate: Sophia Residence (15 Sophia Road), 17 m | Sophia Residence (15 Sophia Road), 17 m (seen over from storey 8) | 0h | 8.8h | Aug–Apr |
| #40 (storeys 3 to 4) | 1-Bedroom Premium | SSW 196° | Out of the estate: Sophia Residence (15 Sophia Road), 19 m | Sophia Residence (15 Sophia Road), 19 m (at least as tall as this stack) | 0h | 7.5h | Aug–Apr |
| #40 (storeys 5 to 19) | 2-Bedroom Premium | SSW 196° | Out of the estate: Sophia Residence (15 Sophia Road), 20 m | Sophia Residence (15 Sophia Road), 20 m (seen over from storey 8) | 0h | 9.3h | Aug–Apr |
| #41 (storeys 3 to 4) | 1-Bedroom Premium | NNE 16° | Azure Spa, 2 m · Residential Drop-off, 12 m | Block 1A, 13 m (at least as tall as this stack) | 3.8h | 0h | Apr–Aug |
| #41 (storeys 5 to 19) | 2-Bedroom Premium | NNE 16° | Azure Spa, 3 m · Residential Drop-off, 12 m | Block 1A, 13 m (at least as tall as this stack) | 6.8h | 0h | Apr–Aug |
| #42 | 1-Bedroom Suite | NNE 16° | Azure Spa, 2 m · Residential Drop-off, 12 m | Block 1A, 13 m (at least as tall as this stack) | 6.8h | 0h | Apr–Aug |
Frequently asked questions
- Which The Collective at One Sophia stacks avoid the afternoon sun?
- No stack avoids the afternoon sun in every month at mid-height; use the tool to compare storeys.
- Which The Collective at One Sophia stacks take the afternoon sun most of the year?
- No stack takes the afternoon sun in ten or more months at mid-height.
- Which The Collective at One Sophia stacks have the most open view?
- The most open stacks at mid-height are #29 (storeys 6 to 19), #30, #41 (storeys 5 to 19), #21, #22, #42.
- Which The Collective at One Sophia stacks look straight at another block?
- #24 (storeys 3 to 4) faces Block 1B 13 m away; #24 (storeys 5 to 19) faces Block 1B 13 m away; #25 faces Block 1B 13 m away; #26 faces Block 1B 13 m away; #27 faces Block 1B 13 m away; #28 faces Block 1B 13 m away; #29 (storey 5) faces Wilkie Edge (Citadines Mount Sophia) 42 m away; #31 faces Block 1A 13 m away; #32 faces Block 1A 13 m away; #33 faces Block 1A 13 m away; #34 faces Block 1A 13 m away; #40 (storeys 3 to 4) faces Sophia Residence (15 Sophia Road) 19 m away; #41 (storeys 3 to 4) faces Block 1A 13 m away; #41 (storeys 5 to 19) faces Block 1A 13 m away; #42 faces Block 1A 13 m away. Each of those buildings is at least as tall as the stack facing it, so no storey looks over it.
- Which The Collective at One Sophia stacks face a pool?
- Azure Pool: #24 (storeys 3 to 4), #24 (storeys 5 to 19), #25, #26, #31, #32, #33, #34. Azure Spa: #27, #28, #41 (storeys 3 to 4), #41 (storeys 5 to 19), #42. A stack counts when at least a quarter of the sight lines across its window reach the water before another tower.
- Which The Collective at One Sophia stacks face a road?
- Sophia Road: #21, #22, #23, #29 (storey 5), #29 (storeys 6 to 19), #30. These have the road within 80 m straight ahead with no other tower of the project in between.
How this is worked out, and its limits
Where the stacks are. Each stack’s outline is traced from the developer’s site plan and fitted to the land parcel on the map. Expect positions within a few metres and bearings within a few degrees. Unit types come from the developer’s unit distribution chart and add up to the published unit mix, and the map uses those same colours; 26 of the 26stacks are also named on the developer’s floor plans, and all of those match.
Facing. The facing is the side the living room and balcony are on, read from the developer’s floor plan for each of the 26 stacks. End and corner homes also have bedroom windows on a second side, which the tool does not model.
What it looks onto. The pools, lawns, courts and pavilions are read off the developer’s site plan and placed on the map with the same fit as the stacks, so they are right to within a few metres. A stack “looks onto” a pool when at least a quarter of 17 sight lines across its window (40° either side of the facing) reach the water before another tower of the project. It “faces out of the estate” when the site boundary is within 50 m straight ahead. Facility names and positions are the developer’s and can change before completion.
Heights. Towers use the developer’s storey counts at an assumed 3.2 m per storey. HDB blocks use HDB’s highest-storey records; other buildings use their storey count or a typical height for their type. Every building is modelled as its footprint raised straight up: no roofs, balconies, trees or slopes.
Sun. The same solar model as the Sun Path & Facing Calculator, checked to within about three minutes, with a building in the way counted as shade. The window is a point at mid-storey height on the middle of the outside wall. Balconies, overhangs and cloud cut real sun further, so read the hours as a ceiling.
Prices. Prices are the developer’s price list by unit type, as at 1 Oct 2026: the lowest and highest asking price for each type, not a price for one home. Floor plans and anything the developer has not published are not shown. Details are as at 2026-10-01 and can change. Sources: Developer website, brochures and floor plans; SingHaiyi Group corporate site; URA developer sales; URA land lot map; HDB Property Information; OpenStreetMap; OneMap.
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