Castle Green is a residential complex located at 481 Yio Chu Kang Road. This development is built by the reputable developer Allgreen Properties and comprises four towers. The unique feature of each tower is that the centre stacks are seven stories tall while those at the side are 13 stories tall, creating a visual effect of a castle.
The development features 664 residential units with sizes ranging from 947 square feet to 1,593 square feet, making it a suitable home for families, couples, and individuals alike.
Castle Green is well-equipped with an array of modern facilities and amenities that cater to the needs of its residents. The development boasts a swimming pool, children’s pool, clubhouse, gymnasium, tennis courts, and playground. For those who enjoy relaxing in nature, Castle Green’s beautiful landscaping is perfect for a stroll or reading a book.
Castle Green is in a prime location that offers residents easy access to many amenities. It is located just a short distance from several shopping malls, including AMK Hub, Junction 8, and Thomson Plaza. Residents can also enjoy easy access to several eateries and restaurants that serve a variety of local and international cuisines.
For those who need to travel further afield, Castle Green is well-connected to several major roads and expressways, including the Central Expressway (CTE) and Seletar Expressway (SLE). Public transportation is also easily accessible, with several nearby bus stops and the Yio Chu Kang and Lentor MRT Station just a short distance away.
Castle Green Location Map
Castle Green Street View
Castle Green Resale/Rental Prices
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CASTLE GREEN Sales and Rental Transactions
Share a link to the applied filters and selected section. Figures update over time.
Property market snapshot
Prices, rents and activity
Oct 2025 – Sep 2026
Size and bedroom options show recorded transactions in the selected period; they do not describe every unit type in the development. The period ends before the current month. Sales filters apply to sales; bedroom selection applies to rentals. The same filters apply to the figures, charts and transaction tables below.
CASTLE GREEN · Oct 2025 – Sep 2026 The imported URA data contains 17 sales and 67 rental contracts matching the selected period and filters.
Median single-unit sale price: S$1,560,000, based on 17 sales. Median strata sale price per square foot: S$1,381 / sqft, based on 17 sales. Median monthly rent: S$3,600, based on 67 rental contracts.
Sale type: All sale types. Sales unit size: All unit sizes. Rental bedrooms: All bedroom counts. Historical transactions describe this sample, not current asking prices, rental listings or a valuation.
Median sale priceS$1,560,00017 single-unit sales · All sale types
Median sale PSFS$1,381 / sqft17 strata sales · All sale types
Median monthly rentS$3,60067 rental contracts
Recorded activity17 sale records67 rental contracts · selected period
The sale cards combine sale types. Choose New Sale, Sub Sale or Resale for a focused comparison; the size breakdown keeps those types separate.
Sale prices by unit size
Median transaction price; sale types shown separately. Bars share a zero-based scale within this panel. Select a size label to filter sales.
S$5,150 / monthMiddle 50%: Limited sample — fewer than 5 records
Exact rental breakdown and rent extremes
Bedrooms
Contracts
Median rent
Middle 50%
Min–max rent
2 bedrooms
40
S$3,400
S$3,323 – S$3,563
S$2,700 – S$4,200
3 bedrooms
23
S$4,400
S$4,025 – S$4,600
S$3,825 – S$4,900
4 bedrooms
4
S$5,150
Limited sample — fewer than 5 records
S$5,000 – S$5,200
How to read these figures
Medians describe the transactions in this view, not a valuation or a change in every home’s value. Middle 50% is the 25th–75th percentile, shown only with at least five observations; smaller groups are flagged. Minima and maxima are available in the breakdown tables. Percentiles use linear interpolation.
Price and PSF statistics include only sales explicitly recorded as one unit. Bulk sales and records with an unknown unit count remain in the detailed table when All unit sizes is selected. PSF uses unrounded strata area; size bands use rounded square feet. A size band does not identify bedrooms, penthouses, layout or unit condition.
Rental bedrooms are as reported; missing or non-numeric values are Not stated. Rental sizes are ranges. Rents and sales are separate samples: no project yield or exact rental PSF is inferred.
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CASTLE GREEN · Oct 2025 – Sep 2026 · All sale types · All unit sizes · All bedroom counts
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Rental yield calculator
Enter a purchase price and monthly rent for the same home. Results update as you type. Your assumptions stay in this page while you change transaction filters; they are not submitted or saved.
Rental reference in the selected view: median S$3,600 / month from 67 contracts. These contracts may cover different-sized homes. Check the bedroom breakdown and records before choosing your rent assumption.
Optional vacancy and running expenses
Blank expense fields count as zero. Enter annual costs for the full year; they are not reduced during vacancy.
Enter purchase price and monthly rent to calculate.
Annual income after entered expenses = monthly rent × (12 − vacant months) − monthly maintenance × 12 − annual property tax − other annual running costs. Yield after entered expenses divides that income by purchase price.
Results use your assumptions and are indicative, before financing and personal income tax. The denominator excludes stamp duties, legal fees, renovation, furnishing and other acquisition costs. Include recurring insurance, repairs and letting costs in other running costs where relevant. No appreciation, mortgage repayment or return on equity is calculated. Historical rental contracts do not guarantee future rent or occupancy.
History and activity
How transactions changed over time
Monthly · Oct 2025 – Sep 2026
The active filters also apply here. Value axes start at zero and adjust to the selected records; check their labels when comparing views. Each point shows a period median; the bars below count recorded sales or rental contracts. Different sale types and rental bedroom counts have separate series. These changes can reflect the mix of homes transacted, rather than appreciation of an individual home.
Sale PSF history
Median S$/sqft for single-unit strata sales, by sale type.
Resale
On a narrow screen, swipe the chart horizontally. Tap a point/bar or use the period controls for exact figures.
Aug 2026
1 sale records in this period.
Resale: S$1,414 / sqft · 1 sale · limited sample
Exact history and activity table
Period
Resale median PSF
Resale sales
Sale records
Oct 2025
—
0
0
Nov 2025
S$1,306
3 (limited)
3
Dec 2025
S$1,420
2 (limited)
2
Jan 2026
S$1,319
2 (limited)
2
Feb 2026
S$1,348
2 (limited)
2
Mar 2026
S$1,446
3 (limited)
3
Apr 2026
S$1,372
3 (limited)
3
May 2026
S$1,532
1 (limited)
1
Jun 2026
—
0
0
Jul 2026
—
0
0
Aug 2026
S$1,414
1 (limited)
1
Sep 2026
—
0
0
Monthly rent history
Median monthly rent in S$, by reported bedroom count.
2 bedrooms3 bedrooms4 bedrooms
On a narrow screen, swipe the chart horizontally. Tap a point/bar or use the period controls for exact figures.
Filled points have at least five qualifying observations; hollow points have fewer than five. Lines join only adjacent filled points. Gaps are not estimated or filled with zeros. For five-year views, edge quarters marked * may contain fewer than three selected months. Sale activity bars include all selected sale records; PSF points use only qualifying single-unit strata sales.
Individual sale comparison
Sale price versus unit size
Oct 2025 – Sep 2026 · 17 qualifying sale records. The period, sale-type and unit-size filters above apply. Bedroom filters affect rentals only
Each plotted position represents one or more sales at that size and price. Tap a marker or select a record below for its contract month, floor range and PSF. Markers with a number contain multiple records; none are discarded.
Resale
Both axes start at zero and adjust to the selected sales. All qualifying sales, including extreme values, remain shown. Swipe horizontally on a narrow screen. Identical positions are grouped without moving the data points. Nearby markers can overlap; the selector and table retain every eligible record.
0 selected records excluded from this plot: only explicitly single-unit strata sales with positive numeric prices and areas qualify. Size positions and PSF use unrounded area; displayed sizes are rounded. Record numbers refer to this view and are not unit identifiers. No fitted price or valuation is inferred.
Sales Transactions
Contract month
Type of sale
Floor range
Area (sqft)
Sale price (S$)
Price (S$/sqft)
Units in transaction
Jan 2026
Resale
06-10
947
1,260,000
1,330
1
Jan 2026
Resale
01-05
947
1,238,888
1,308
1
Dec 2025
Resale
06-10
1,152
1,680,000
1,459
1
Dec 2025
Resale
01-05
947
1,308,000
1,381
1
Nov 2025
Resale
06-10
1,216
2,308,888
1,898
1
Nov 2025
Resale
01-05
1,152
1,500,000
1,302
1
Nov 2025
Resale
01-05
1,216
1,588,000
1,306
1
Last downloaded: 30 Oct 2026, 12:20 SGT. 17 matching records in the selected period.
Rental Contracts
Latest recorded lease start: Sep 2026.
Lease start month
Bedrooms
Area range (sqft)
Monthly rent (S$)
Jan 2026
3
1300-1400
3,925
Jan 2026
2
900-1000
4,200
Jan 2026
3
1200-1300
3,825
Dec 2025
2
900-1000
3,400
Dec 2025
2
900-1000
3,500
Dec 2025
2
900-1000
3,400
Dec 2025
2
900-1000
3,200
Dec 2025
3
1200-1300
4,000
Dec 2025
2
900-1000
3,400
Dec 2025
2
900-1000
3,400
Last downloaded: 27 Oct 2026, 17:07 SGT. 67 matching records in the selected period.
Source: Urban Redevelopment Authority (URA), accessed through the URA Data Service. Data made available under the Singapore Open Data Licence. Areas are rounded; rental areas are ranges. Records may be revised and do not identify exact units. Multiple transactions in the same month are not ordered by day. These records are historical transactions, not current listings or valuations.
Castle Green Site Map
Castle Green 2 Bedroom Plus Utility Type A1 Floor Plan
Castle Green 2 Bedroom Plus Utility PES Type A1a Floor Plan
Castle Green 2 Bedroom Plus Utility Type A2 Floor Plan
Castle Green 2 Bedroom Plus Utility PES Type A2a Floor Plan
Castle Green 3 Bedroom Plus Utility Type B1 Floor Plan
Castle Green 3 Bedroom Plus Utility PES Type B1a Floor Plan
Castle Green 3 Bedroom Plus Utility Type B1c Floor Plan
Castle Green 3 Bedroom Plus Utility PES Type B1b Floor Plan
Castle Green 3 Bedroom Plus Utility PES Type B2a Floor Plan
Castle Green 3 Bedroom Plus Utility Type B2 Floor Plan
Castle Green 3 Bedroom Plus Utility Type B3 Floor Plan
Castle Green 4 Bedroom Plus Utility Type C Floor Plan
Superstructure
Reinforced concrete using grade 30 concrete manufactured from Portland cement complying with BS12 and steel reinforcement bar complying with BS4449.
Walls
(1) External Wall : Clay brick with plastering
(2) Internal Wall : Clay brick with plastering
Roof
(1) Pitch Roof : Clay roof tiles with one layer of double sided aluminium foil and fibre glass insulation on tanalised timber rafters.
(2) Flat Roof : Reinforced concrete roof with waterproofing membrane, insulation and roofing panels.
Ceiling
(1) Water resistance ceiling board with emulsion paint to bathrooms.
(2) Plaster and emulsion paint to other areas.
Finishes :
(1) Walls
(a) Internal Wall
(i) Internal height (up to false ceiling) ceramic wan tiles: exposed wall surfaces of bathrooms and kitchen.
(ii) Full height (up to ceiling) ceramic wall tiles: exposed wall surfaces of WC.
(iii) Plastering with emulsion paint for all other internal walls: living, dining, bedroom, utility, stores.
(b) External Wall
Plaster and spray textured coating/emulsion paint finish
(3) WINDOWS
(1)(a) Powder-coated aluminium framed casement window with fixed glass panel below - Living/Dining of type Al, A2, Bl, Bic, B2, B3 & C.
(b) Powder coated aluminium framed casement window - Bedrooms
(c) Powder coated aluminium framed top hung window - Bathrooms
(d) Powder coated aluminium framed adjustable louvre window - Kitchen except for first storey
(e) Powder coated aluminium framed adjustable louvre window with fixed grille - first storey unit kitchen
(f) Fixed louvre window to w.c.
(2) Glazing - 6mm thick bronze tinted/obscured/laminated glass
(4) DOORS (1)
(a) Fire-rated solid core timber door - Main Entrance
(b) Timber flush door - Bedrooms
(c) Powder coated aluminium framed sliding door - Living at type Ala, A2a, Bla, Blb, B2a
(d) Timber flush door with fixed glass panel - Kitchen
(e) Water-proof plywood flush door - Bath/w.c.
(f) Timber louvred door - store/utility
(2) Selected locksets
Sanitary Fittings :
(1) Master Bathroom
Long bath :1 no
Soap holder :1 no
Shower : 1 no
Paper holder : 1 no
Water closet : 1 no
Towel rail : 1 no
Mirror : 1 no
Shower screen : 1 no
Soap and sponge holder :1 no
(2) Common Bathroom
Shower : 1 no
Paper holder : 1 no
Water closet :1 no
Towel rail : 1 no
Mirror :1 no
Shower screen : 1 no
Soap holder : 1 no
(3) W.C.
Shower and tap point :1 no
Paper holder : 1 no
Wash basin : 1 no
Soap holder : 1 no
Water closet :1 no
Electrical Installation
A1a
A2a
B1a
B1b
B1c
B2a
A1
A2
B1
B2
B3
C
Ceiling Light Point
11
10
11
11
11
13
11
10
11
13
15
15
Wall Light Point
2
2
2
2
2
2
2
2
2
2
2
3
13A Switch Socket Outlet
9
9
11
11
11
12
9
9
11
12
11
13
13A Twin Switch Socket Outlet
3
3
3
3
3
3
3
3
3
3
3
3
Bell Point
1
1
1
1
1
1
1
1
1
1
1
1
Telephone Outlet
3
3
4
4
4
4
3
3
4
4
4
5
FM/TV Outlet
3
3
4
4
4
4
3
3
4
4
4
5
20 A DP Isolator (For Aircon)
2
2
2
2
2
2
2
2
2
2
2
3
Water Heater Point
3
3
3
3
3
3
3
3
3
3
3
4
15 A Switch Socket Outlet
4
4
4
4
4
4
4
4
4
4
4
4
Audio Intercom Set
1
1
1
1
1
1
1
1
1
1
1
1
Lightning Protection
Lightning protection system shall be provided in accordance with Singapore Standard CP.
Water Proofing
Waterproofing provided to basement carpark, r.c. flat roof, open deck, lift pit wall, swimming pool.
Driveway And Car Parks
1) External
(a) Driveway: interlocking paver or tiles/premix macadan
(b) Car park : Premix macadan
2) Basement
(a) Driveway: concrete floor with hardener
(b) Car park: concrete floor with hardener
Recreation Facilities
• Swimming pool
• Wading pool
• Spa pool
• Fitness corner
• Children's play area
• Barbecue Area
• Tennis Court -3 nos.
• Jogging Track
• Mini-Golf driving range -2 nos.
• Squash Court -2 nos.
• Badminton Hall
• Gymnasium
• Function Room
• Meeting Room
• Sauna-1 no. each for male and female
Other Items
1) Kitchen Cabinets: High and low-level timber kitchen cabinets with double bowl sink.
2) Wardrobes: Built-in wardrobe to all bedrooms.
3) Air-conditioning system: Air-cooled split system comprising of outdoor condensing units and indoor fan coil unit serving living, dining and all bedrooms.
4) Appliances: A cooker hob, cooker hood, an oven to kitchen. Storage water heater with hot water supply pipework to bathrooms and kitchen.
Description Of The Housing Project
1) General Description : Proposed condominium housing development comprising 664 units of apartments (13 storey, 8 storey & 7 storey) with 1 basement carpark and provision for swimming pool, squash courts, tennis courts and other ancillaries on lots 12930, MK 18 at Yio Chu Kang Road/Ang Mo Kio Ave 6
2) Details of Building Specifications : As in the above schedule
3) Type of residential units located in the building project : Apartment
4) Total No. of units : 664 units
5) Common properties includes management office, squash courts, tennis courts, badminton hall, male and female changing room, sauna, gymnasium, function room, meeting room, swimming pool, wading pool, spa pool, children play area, barbecue pit, mini-golf driving range, jogging track, staircases, bin centre, bin chambers, consumer switch rooms, guard houses, car park lots and driveways.
6) Description of car parking spaces : 685 nos of covered carpark : 102 nos of surface carpark
7) Purpose of building project and restriction to use : Residential
DEVELOPER : CASTLE GREEN PROPERTY PTE LTD
DEVELOPERS LICENCE NO. : B 0474
TENURE OF LAND : 99 YEARS LEASE (FROM 1ST DEC 1993) ON LOTS 12930 MK 18 AT Y10 CHU KANG ROAD/ANG MO RIO AVE 6
EXPECTED DATE OF VACANT POSSESSION : 30TH NOVEMBER 1997
EXPECTED DATE OF LEGAL COMPLETION : 31ST DECEMBER 1999
BUILDING PLAN APPROVAL NO. : BP 4627/9
