RPS · Resale Project Scorecard
Castle Green — Grade A
RPS score 6.74/10 · D26 · Mandai, Upper Thomson · 664 units · scored across 7 weighted factors — methodology published.
99YR · Castle Green Property Pte Ltd · TOP 1997
Strong project with clear strengths. Standout strengths: project size. Key weaknesses: total returns, future transformation.
Factor breakdown
- Project's Historical Performance25% weight
- 7/10
- Primary School Effect20% weight
- 7/10
- Project Size16% weight
- 10/10
- MRT Proximity13% weight
- 7/10
- Rental Yield10% weight
- 4/10
- Tenure10% weight
- 5/10
- Future Transformation6% weight
- 3/10
Avg Ann. of +3.62% — near-median performance within its 1997-era cohort (62th percentile).
2 primary schools within 1km (nearest: ANDERSON PRIMARY SCHOOL at 0.15km). Strong school proximity — a genuine advantage for young families.
664 units — ideal scale for liquidity and facilities without crowding. Typically the sweet spot for resale turnover.
0.63km from Lentor Mrt Stn (TE5) — short walk to MRT, good transport convenience.
Rental yield of 3.18% — below-average income return.
99YR tenure — about 66 years remaining; some long-term decay exposure but not imminent.
Limited future-catalyst exposure — nearest is Ang Mo Kio MRT CRL interchange (CR11, CRL1) at 2.10km, far enough that the impact on this project is modest.
Primary schools within 1km: Anderson Primary School, Mayflower Primary School.
The verdict· Scores updated September 2026
Castle Green scores 6.74 out of 10 on the TRIBE Resale Project Scorecard, Grade A, ranking 505th of 2,357 resale condos scored in Singapore and 5th of 14 in District 26 (Mandai, Upper Thomson). Its strongest factors are Project Size (10/10) and Project's Historical Performance (7/10); its weakest is Future Transformation (3/10). Strong project with clear strengths. Standout strengths: project size. Key weaknesses: total returns, future transformation.
See all 14 scored condos in District 26 (Mandai, Upper Thomson) →
RPS · Resale Project Scorecard
Recent resale transactions at Castle Green
12 months to September 2026 (Oct 2025 – Sep 2026): 17 resale transactions, median $1,381 psf, median price $1.56M. Median PSF is up 5.0% on the previous 12 months (Oct 2024 – Sep 2025, $1,315 psf).
| Period | Transactions | Median PSF | Median price |
|---|---|---|---|
| Oct–Dec 2025 | 5 | $1,381 psf | $1.59M |
| Jan–Mar 2026 | 7 | $1,375 psf | $1.30M |
| Apr–Jun 2026 | 4 | $1,407 psf | $1.61M |
| Jul–Sep 2026 | 1 | $1,414 psf | $1.63M |
| 12-month total | 17 | $1,381 psf | $1.56M |
Aggregates of URA REALIS resale caveats (data to September 2026). A specific unit's value depends on floor, size, facing and condition — for a unit-level read, use the Resale Price Check.
Castle Green: frequently asked questions
Answers generated from the scorecard data — RPS rank 505th of 2,357, scores updated September 2026.
- Is Castle Green a good buy in 2026?
- Castle Green scores 6.74/10 on the TRIBE Resale Project Scorecard (Grade A), which places it 505th of 2,357 Singapore resale condos and 5th of 14 in District 26 (Mandai, Upper Thomson). Strong project with clear strengths. Standout strengths: project size. Key weaknesses: total returns, future transformation. RPS scores project-level demand fundamentals — not a specific unit or its asking price — so read the grade as a screen: it tells you whether the drivers of resale demand are present, and the price you pay still decides the outcome.
- What is the average PSF at Castle Green?
- In the 12 months to September 2026 (Oct 2025 – Sep 2026), URA REALIS records 17 resale transactions at Castle Green, at a median of $1,381 psf and a median price of $1.56M (range $1,283 psf to $1,898 psf). The median PSF is up 5.0% on the previous 12 months (Oct 2024 – Sep 2025, $1,315 psf). Figures are aggregates of caveats lodged with URA; a specific unit's value depends on floor, size, facing and condition.
- How far is Castle Green from the nearest MRT station?
- Castle Green is about 630m from Lentor MRT (TE5), scoring 7/10 on the MRT Proximity factor (13% of the RPS score). Distances are straight-line, and confirmed upcoming stations are also considered.
- How does Castle Green compare with Teacher's Housing Estate?
- Teacher's Housing Estate is the project scored next to Castle Green on the District 26 ranking: 7.15 (Grade A) against Castle Green's 6.74 (Grade A). Castle Green scores higher on Project Size (10 vs 3) and MRT Proximity (7 vs 6); Teacher's Housing Estate scores higher on Rental Yield (4 vs 9) and Tenure (5 vs 10).
- Which primary schools are within 1km of Castle Green?
- 2 primary schools are within 1km of Castle Green: Anderson Primary School, Mayflower Primary School. 2 primary schools within 1km (nearest: ANDERSON PRIMARY SCHOOL at 0.15km). Strong school proximity — a genuine advantage for young families. Castle Green scores 7/10 on the Primary School Effect factor (20% of the RPS score), which weights each school by its recent P1 ballot demand.
- What is the tenure of Castle Green, and how big is the project?
- Castle Green is 99-year leasehold, completed in 1997, has 664 units, developed by Castle Green Property Pte Ltd. 99YR tenure — about 66 years remaining; some long-term decay exposure but not imminent. 664 units — ideal scale for liquidity and facilities without crowding. Typically the sweet spot for resale turnover. Tenure carries 10% of the RPS score and Project Size 16%.
Scored either side of Castle Green in Mandai, Upper Thomson
The projects immediately above and below it on the Resale Project Scorecard — the comparison a buyer is usually actually making.
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