All Data are collected using AI (Warning: Highly bound for Error and typo mistakes) We are testing various AI performance.
Architectural and Commercial Study: Coliwoo Bukit Timah Fire Station
Functional zoning, floor areas, tenancy mix and adaptive-reuse economics · Research updated 5 November 2026
I have found something particularly useful: Coliwoo's original commercial leasing schedule, issued in February 2025. It identifies individual shop-unit numbers, floor areas, proposed functions, asking rents and electrical provisions.
This gives us considerably more information than the publicity articles. Although I could not locate the approved architectural floor plans, we can reconstruct a meaningful functional and financial study from the published evidence.
There is also an important correction to our earlier discussion: the redevelopment contains 32 commercial units, not merely 10. Earlier reporting referred to 10 commercial units, but subsequent coverage confirmed 32. As at April 2026, 28 of those 32 units had been leased.
The Straits Times+2
1. The property: Key architectural data
Site area
8,578 m²
Approximate reported current compound area
Historic GFA
2,964 m²
Indicative 2021 study figure
Residential rooms
62
Across seven accommodation blocks
Commercial units
32
28 leased as at April 2026
The 2021 C40 documentation described an approximately 8,308 m² study boundary with 2,964.2 m² of GFA. The later reported site area is approximately 8,578 m². These figures have different reference dates and boundaries and should not be treated as a certified current GFA schedule.
Reinventing Cities+2
The original estate comprises a principal fire-station building, seven three-storey firefighters' accommodation blocks, and a former station master's residence.
The new development places commercial and enrichment premises principally on the ground floor, with co-living accommodation on the upper floors of the residential blocks.
Reinventing Cities+1
2. Actual commercial leasing areas
The February 2025 LHN leasing document provides the following important breakdown.
Component Advertised area Asking rent/month
Main F&B unit #01-01 3,514 sq ft S$35,140
Outdoor restaurant area 1,315 sq ft S$4,997
Small retail #01-02 183 sq ft S$2,745
Upper F&B lounge #02-01 1,277 sq ft S$12,770
23 small retail/community units 5,570 sq ft combined Various
Open field proposed for dog training 3,843 sq ft S$14,987.70
LHN Space Optimisation -
A few revealing observations emerge.
First, the principal F&B unit has an area of approximately 326.5 m², larger than the combined size of many of the small workshop units.
Second, the smaller premises are mostly between 193 and 278 sq ft, equivalent to about 18–26 m² each.
This indicates a deliberate approach to commercial subdivision: creating numerous relatively small, individually lettable spaces suitable for artists, tutors, craft studios, pet services and specialised activity providers.
Third, the document identifies a separately marketed outdoor area and a proposed dog-training field. These should not be automatically counted as building GFA.
The documented indoor commercial spaces above total 10,544 sq ft, or approximately 980 m². This is the combined area of the individually listed indoor premises, not a certified measure of all current commercial floor space.
The 2025 asking rents also do not establish the rents eventually agreed with tenants.
3. The functional zoning of the conserved compound
The following is a conceptual reconstruction based on the reported uses, building types and leasing information. It is not a measured site plan.
Functional zoning diagram
Blocks and functions are illustrated schematically, not in their surveyed positions or proportions.
Architecturally, the greatest transformation is in the seven residential blocks. They once housed firefighters and families, whereas today they have two overlapping functions: private accommodation upstairs and public-facing commercial activity downstairs.
That arrangement is effective because the buildings can support different activities without requiring every space to be open to the public.
However, it also creates several design challenges. Noise from children's workshops may affect accommodation, cooking exhaust must be separated from residential windows, and animal-related premises require particular attention to cleaning, odours and waste management.
An additional issue is fire safety. Introducing sleeping accommodation above commercial uses requires carefully managed escape routes, compartmentation and building services. These are significant considerations when converting a 1950s institutional property.
4. How efficiently is the space being used?
One of the most revealing figures is the residential reconfiguration.
Originally, there were 45 rooms across the seven residential blocks. Following the conversion, there are 62 serviced apartments — an increase of approximately 38%.
The published sizes range from 100 to 190 sq ft per accommodation unit.
Singapore Property News
The approximate area occupied by the private residential rooms alone is therefore between:
Assumption Total room area
All 62 rooms at 100 sq ft 576 m²
All 62 rooms at 145 sq ft 835 m²
All 62 rooms at 190 sq ft 1,095 m²
The middle case uses an assumed average of 145 sq ft per unit. It is illustrative rather than a confirmed figure.
These figures exclude common corridors, stairs, lounges, structural walls, service rooms and other circulation areas.
The comparison raises an important point. In such a redevelopment, financial performance depends not simply on gross floor area but on how effectively that area can be subdivided into useful, revenue-generating spaces.
A 20 m² workshop may command a much higher rental rate per square metre than a large open hall. But the hall may deliver more public value or contribute to the development's identity.
Successful adaptive reuse requires balancing both.
5. Financial analysis — Does the tenancy mix work?
The original LHN leasing schedule provides a basis for modelling the commercial income.
Illustrative monthly commercial revenue
Based on February 2025 advertised asking rents; assumes all listed spaces are leased at asking rates.
23 small retail/community units
S$73,492
Main restaurant, retail and upper lounge
S$50,655
Total indoor commercial asking rent
S$124,147
The separately advertised outdoor restaurant area and dog-training field would add approximately S$19,985 per month if both were leased at their original asking rents.
This is an indicative rent roll of the 26 identifiable indoor commercial premises in the February 2025 brochure, not a complete or current rent roll for the 32 units subsequently reported.
We can now examine the combined business model.
Interactive revenue scenario
Adjust the assumptions to understand the sensitivity of the business model.
Residential occupancy
90%
Average residential rent per unit
S$3,000/month
Commercial rent realisation
80%
Percentage of the original advertised indoor commercial rent roll collected; combines vacancy and rental discounts for modelling purposes.
Residential revenue S$167,400
Commercial revenue S$99,318
Combined monthly revenue S$266,718
State rental payment S$68,889
Illustrative nine-year refurbishment recovery S$69,444
Monthly revenue less State rent and straight-line refurbishment allocation
S$128,384
Not net profit. Excludes staff, utilities, repairs, insurance, property taxes, management, financing, depreciation and other expenses.
At the default assumptions, residential revenue contributes S$167,400 monthly, and commercial revenue contributes approximately S$99,318 monthly.
That combination creates an illustrative monthly gross revenue of about S$266,718.
Importantly, the capital recovery assumption above uses the full nine-year maximum tenancy. If the four-year renewal option were not exercised, recovering S$7.5 million over only five years would require S$125,000 monthly before financing costs.
This shows how important tenure security is to the economics of conservation.
6. Is the development genuinely successful?
There are some encouraging indicators.
The Straits Times reported that residential occupancy had reached approximately 95% within three months of the September 2025 launch. As at April 2026, 28 of the 32 commercial units had been leased, equivalent to 87.5%.
The Straits Times
Reported early occupancy indicators
Residential occupancy (early post-opening)
95%
Commercial units leased (April 2026)
87.5%
These measurements refer to different dates and do not establish current occupancy in November 2026.
The development's early performance suggests that there is genuine demand for the combination of accommodation and experiential uses.
But there are questions that still need answering before we could make a reliable investment judgement:
• What is the actual realised rental income after discounts and rent-free periods?
• How much of the S$7.5 million expenditure is recoverable within five years rather than nine?
• How much revenue comes from food and beverage, workshops and other activities?
• What are the operating expenses associated with maintaining seven conserved blocks?
• How much of the site is genuinely accessible to the public, independently of commercial activities?
7. The architectural study I would undertake next
The most useful documents still missing are the approved plans showing every block's ground, second and third floors, the current GFA by use, and the latest schedule matching unit numbers to actual occupiers.
For a proper case study, I would approach AJ+J Architecture, the project architect, or LHN/Coliwoo for an architectural site visit.
The questions I would put to them concern the conversion from 45 rooms to 62, the separation of residential and public circulation, the original structures retained, the approved community-use floor area, and whether the small commercial premises can be amalgamated or subdivided as tenant requirements change.
Relevant contacts and reference documents:
AJ+J Architecture
Project architect — architectural drawings and restoration strategy
Architect's project portfolio
LHN Space / Coliwoo
Property management and commercial leasing information
Original February 2025 commercial leasing schedule (PDF)
Coliwoo Bukit Timah Fire Station
Accommodation and operational information
Official property website
8. My concluding assessment
What makes Coliwoo Bukit Timah Fire Station particularly interesting is not simply the conservation of a historic fire station. It is the conversion of a relatively small institutional building complex into a diversified rental property.
The operator is effectively operating three overlapping businesses: a serviced-residential estate, a commercial landlord, and a destination for community activities.
The first provides recurring accommodation revenue. The second monetises numerous small premises. The third generates identity and attracts visitors, which can support demand for the commercial spaces.
From a conservation perspective, the crucial question is whether the public character and historical legibility of the former fire station survive the process of commercial intensification.
From a financial perspective, the question is whether the combination of residential and commercial income can recover S$7.5 million of refurbishment expenditure over a relatively short government lease while producing a sustainable return.
And from an urban-planning perspective, the challenge is whether the site becomes a genuine gateway to the Rail Corridor and surrounding nature reserves, rather than merely a collection of private tenancies.
The most significant lesson is that adaptive reuse requires more than preserving a building. It requires inventing a new economic and social ecosystem that allows the building to remain useful.
Coliwoo provides a valuable case study of that proposition. Its first years of operation will help determine how successfully the architectural, social and financial objectives have been reconciled.
Architectural and Commercial Study: Coliwoo Bukit Timah Fire Station
Functional zoning, floor areas, tenancy mix and adaptive-reuse economics · Research updated 5 November 2026
I have found something particularly useful: Coliwoo's original commercial leasing schedule, issued in February 2025. It identifies individual shop-unit numbers, floor areas, proposed functions, asking rents and electrical provisions.
This gives us considerably more information than the publicity articles. Although I could not locate the approved architectural floor plans, we can reconstruct a meaningful functional and financial study from the published evidence.
There is also an important correction to our earlier discussion: the redevelopment contains 32 commercial units, not merely 10. Earlier reporting referred to 10 commercial units, but subsequent coverage confirmed 32. As at April 2026, 28 of those 32 units had been leased.
The Straits Times+2
1. The property: Key architectural data
Site area
8,578 m²
Approximate reported current compound area
Historic GFA
2,964 m²
Indicative 2021 study figure
Residential rooms
62
Across seven accommodation blocks
Commercial units
32
28 leased as at April 2026
The 2021 C40 documentation described an approximately 8,308 m² study boundary with 2,964.2 m² of GFA. The later reported site area is approximately 8,578 m². These figures have different reference dates and boundaries and should not be treated as a certified current GFA schedule.
Reinventing Cities+2
The original estate comprises a principal fire-station building, seven three-storey firefighters' accommodation blocks, and a former station master's residence.
The new development places commercial and enrichment premises principally on the ground floor, with co-living accommodation on the upper floors of the residential blocks.
Reinventing Cities+1
2. Actual commercial leasing areas
The February 2025 LHN leasing document provides the following important breakdown.
Component Advertised area Asking rent/month
Main F&B unit #01-01 3,514 sq ft S$35,140
Outdoor restaurant area 1,315 sq ft S$4,997
Small retail #01-02 183 sq ft S$2,745
Upper F&B lounge #02-01 1,277 sq ft S$12,770
23 small retail/community units 5,570 sq ft combined Various
Open field proposed for dog training 3,843 sq ft S$14,987.70
LHN Space Optimisation -
A few revealing observations emerge.
First, the principal F&B unit has an area of approximately 326.5 m², larger than the combined size of many of the small workshop units.
Second, the smaller premises are mostly between 193 and 278 sq ft, equivalent to about 18–26 m² each.
This indicates a deliberate approach to commercial subdivision: creating numerous relatively small, individually lettable spaces suitable for artists, tutors, craft studios, pet services and specialised activity providers.
Third, the document identifies a separately marketed outdoor area and a proposed dog-training field. These should not be automatically counted as building GFA.
The documented indoor commercial spaces above total 10,544 sq ft, or approximately 980 m². This is the combined area of the individually listed indoor premises, not a certified measure of all current commercial floor space.
The 2025 asking rents also do not establish the rents eventually agreed with tenants.
3. The functional zoning of the conserved compound
The following is a conceptual reconstruction based on the reported uses, building types and leasing information. It is not a measured site plan.
Functional zoning diagram
Blocks and functions are illustrated schematically, not in their surveyed positions or proportions.
Architecturally, the greatest transformation is in the seven residential blocks. They once housed firefighters and families, whereas today they have two overlapping functions: private accommodation upstairs and public-facing commercial activity downstairs.
That arrangement is effective because the buildings can support different activities without requiring every space to be open to the public.
However, it also creates several design challenges. Noise from children's workshops may affect accommodation, cooking exhaust must be separated from residential windows, and animal-related premises require particular attention to cleaning, odours and waste management.
An additional issue is fire safety. Introducing sleeping accommodation above commercial uses requires carefully managed escape routes, compartmentation and building services. These are significant considerations when converting a 1950s institutional property.
4. How efficiently is the space being used?
One of the most revealing figures is the residential reconfiguration.
Originally, there were 45 rooms across the seven residential blocks. Following the conversion, there are 62 serviced apartments — an increase of approximately 38%.
The published sizes range from 100 to 190 sq ft per accommodation unit.
Singapore Property News
The approximate area occupied by the private residential rooms alone is therefore between:
Assumption Total room area
All 62 rooms at 100 sq ft 576 m²
All 62 rooms at 145 sq ft 835 m²
All 62 rooms at 190 sq ft 1,095 m²
The middle case uses an assumed average of 145 sq ft per unit. It is illustrative rather than a confirmed figure.
These figures exclude common corridors, stairs, lounges, structural walls, service rooms and other circulation areas.
The comparison raises an important point. In such a redevelopment, financial performance depends not simply on gross floor area but on how effectively that area can be subdivided into useful, revenue-generating spaces.
A 20 m² workshop may command a much higher rental rate per square metre than a large open hall. But the hall may deliver more public value or contribute to the development's identity.
Successful adaptive reuse requires balancing both.
5. Financial analysis — Does the tenancy mix work?
The original LHN leasing schedule provides a basis for modelling the commercial income.
Illustrative monthly commercial revenue
Based on February 2025 advertised asking rents; assumes all listed spaces are leased at asking rates.
23 small retail/community units
S$73,492
Main restaurant, retail and upper lounge
S$50,655
Total indoor commercial asking rent
S$124,147
The separately advertised outdoor restaurant area and dog-training field would add approximately S$19,985 per month if both were leased at their original asking rents.
This is an indicative rent roll of the 26 identifiable indoor commercial premises in the February 2025 brochure, not a complete or current rent roll for the 32 units subsequently reported.
We can now examine the combined business model.
Interactive revenue scenario
Adjust the assumptions to understand the sensitivity of the business model.
Residential occupancy
90%
Average residential rent per unit
S$3,000/month
Commercial rent realisation
80%
Percentage of the original advertised indoor commercial rent roll collected; combines vacancy and rental discounts for modelling purposes.
Residential revenue S$167,400
Commercial revenue S$99,318
Combined monthly revenue S$266,718
State rental payment S$68,889
Illustrative nine-year refurbishment recovery S$69,444
Monthly revenue less State rent and straight-line refurbishment allocation
S$128,384
Not net profit. Excludes staff, utilities, repairs, insurance, property taxes, management, financing, depreciation and other expenses.
At the default assumptions, residential revenue contributes S$167,400 monthly, and commercial revenue contributes approximately S$99,318 monthly.
That combination creates an illustrative monthly gross revenue of about S$266,718.
Importantly, the capital recovery assumption above uses the full nine-year maximum tenancy. If the four-year renewal option were not exercised, recovering S$7.5 million over only five years would require S$125,000 monthly before financing costs.
This shows how important tenure security is to the economics of conservation.
6. Is the development genuinely successful?
There are some encouraging indicators.
The Straits Times reported that residential occupancy had reached approximately 95% within three months of the September 2025 launch. As at April 2026, 28 of the 32 commercial units had been leased, equivalent to 87.5%.
The Straits Times
Reported early occupancy indicators
Residential occupancy (early post-opening)
95%
Commercial units leased (April 2026)
87.5%
These measurements refer to different dates and do not establish current occupancy in November 2026.
The development's early performance suggests that there is genuine demand for the combination of accommodation and experiential uses.
But there are questions that still need answering before we could make a reliable investment judgement:
• What is the actual realised rental income after discounts and rent-free periods?
• How much of the S$7.5 million expenditure is recoverable within five years rather than nine?
• How much revenue comes from food and beverage, workshops and other activities?
• What are the operating expenses associated with maintaining seven conserved blocks?
• How much of the site is genuinely accessible to the public, independently of commercial activities?
7. The architectural study I would undertake next
The most useful documents still missing are the approved plans showing every block's ground, second and third floors, the current GFA by use, and the latest schedule matching unit numbers to actual occupiers.
For a proper case study, I would approach AJ+J Architecture, the project architect, or LHN/Coliwoo for an architectural site visit.
The questions I would put to them concern the conversion from 45 rooms to 62, the separation of residential and public circulation, the original structures retained, the approved community-use floor area, and whether the small commercial premises can be amalgamated or subdivided as tenant requirements change.
Relevant contacts and reference documents:
AJ+J Architecture
Project architect — architectural drawings and restoration strategy
Architect's project portfolio
LHN Space / Coliwoo
Property management and commercial leasing information
Original February 2025 commercial leasing schedule (PDF)
Coliwoo Bukit Timah Fire Station
Accommodation and operational information
Official property website
8. My concluding assessment
What makes Coliwoo Bukit Timah Fire Station particularly interesting is not simply the conservation of a historic fire station. It is the conversion of a relatively small institutional building complex into a diversified rental property.
The operator is effectively operating three overlapping businesses: a serviced-residential estate, a commercial landlord, and a destination for community activities.
The first provides recurring accommodation revenue. The second monetises numerous small premises. The third generates identity and attracts visitors, which can support demand for the commercial spaces.
From a conservation perspective, the crucial question is whether the public character and historical legibility of the former fire station survive the process of commercial intensification.
From a financial perspective, the question is whether the combination of residential and commercial income can recover S$7.5 million of refurbishment expenditure over a relatively short government lease while producing a sustainable return.
And from an urban-planning perspective, the challenge is whether the site becomes a genuine gateway to the Rail Corridor and surrounding nature reserves, rather than merely a collection of private tenancies.
The most significant lesson is that adaptive reuse requires more than preserving a building. It requires inventing a new economic and social ecosystem that allows the building to remain useful.
Coliwoo provides a valuable case study of that proposition. Its first years of operation will help determine how successfully the architectural, social and financial objectives have been reconciled.
No comments:
Post a Comment