PropKaki
FreeholdCCRDistrict 9 (River Valley)

St Thomas Mansions

Reviewed by Nathan TangUpdated 24 October 2026Data through Dec 2005 (URA)
Quick Summary

St Thomas Mansions is a freehold apartment in District 9 (River Valley) that obtained TOP in 1986, with 29 units across 1 block. Across 34 transactions on record, units have recently transacted around S$1.21M (S$732 psf, ~1,658 sqft).

Key facts about St Thomas Mansions
TenureFreehold
TOP year1986
DeveloperTG DEVELOPMENT PTE LTD
Units29 in 1 block
District and areaDistrict 9 · River Valley · CCR
Nearest MRTGreat World MRT, 447 m (~7 min walk)
Latest median psfS$732 psf, last 12 URA caveats to Dec 2005
Thinking about St Thomas Mansions? Ask before you commit.Ask PropKaki
1

What's for sale and for rent at St Thomas Mansions?

Key Takeaway

No units at St Thomas Mansions are listed for sale or for rent on the property portals PropKaki tracks right now.

Recorded sale prices are in the sections below. Search listings across Singapore →

2

What are the floor plans and unit sizes at St Thomas Mansions?

Key Takeaway

Floor plans for St Thomas Mansions aren't in PropKaki's library yet. Across 34 URA caveats, units range from 1,195 sqft to 4,585 sqft, and the middle half are 1,195 sqft to 1,658 sqft.

sqm ↔ sq ft converter

Check the Floor Plan Finder for St Thomas Mansions →

Unit sizes from URA caveats.

3

What is the price and PSF at St Thomas Mansions?

Key Takeaway

Units have recently transacted around S$1.21M (S$732 psf), at a gross rental yield of about 1.9% (URA caveat data).

Recent median price

S$1.21M

recent · 34 sales on record

Median PSF

S$732 psf

recent transactions

Median rent (monthly)

S$1,900

43 rentals on record

Gross rental yield

1.9%

indicative, gross

Source: URA caveat data, through Dec 2005.

4

What has recently sold at St Thomas Mansions?

Key Takeaway

St Thomas Mansions has 34 recorded sales; the most recent transacted at S$1,038,917 in Dec 2005 (URA caveat data).

DatePriceSize (sqft)PSF
Dec 2005S$1,038,9171,195S$870 psf
Dec 2005S$1,213,6731,658S$732 psf
Dec 2005S$1,213,6731,658S$732 psf
Dec 2005S$1,213,6731,658S$732 psf
Nov 2005S$1,038,9171,195S$870 psf
Nov 2005S$1,038,9171,195S$870 psf
Nov 2005S$2,613,0054,585S$570 psf
Nov 2005S$1,213,6731,658S$732 psf
Nov 2005S$1,213,6731,658S$732 psf
Nov 2005S$1,038,9171,195S$870 psf
Nov 2005S$1,213,6731,658S$732 psf
Nov 2005S$1,213,6731,658S$732 psf

34 sales and 43 rentals on record since Mar 1995. Source: URA.

5

Are prices at St Thomas Mansions rising?

Key Takeaway

The median transacted PSF at St Thomas Mansions has risen 4% over the past 10 years (1995–2005), from S$705 psf to S$732 psf (URA caveats).

YearMedian PSFMedian priceSalesYoY
2005S$732 psfS$1.21M21-6.6%
1996S$784 psfS$1.30M2+11.2%
1995S$705 psfS$1.02M5—

Yearly median transacted PSF and price; years with at least 2 recorded sales. Source: URA caveat data.

6

Is St Thomas Mansions a good investment?

Key Takeaway

Of 31 units at St Thomas Mansions that were bought and later resold (bought from 1995, resold up to 2011), 61% sold for more than they were bought for, with a median gain of 7% over a median 1.6-year hold (URA caveats, before stamp duty, agent fees and interest). Its gross rental yield is about 1.9%. Past resale results don't predict future returns, and this is not financial advice.

Sold for more than bought

61%

of 31 resales here

Median gain

7%

gross, before costs

Median hold

1.6 years

bought to resold

Every unit at St Thomas Mansions with a purchase and a later resale on record, matched from URA caveats. Check the odds for your unit size and holding period →

7

Where is St Thomas Mansions and what's nearby?

Key Takeaway

St Thomas Mansions is located in River Valley, in the Central Region of Singapore.

St Thomas Mansions is a freehold apartment completed in 1986. It was developed by TG DEVELOPMENT PTE LTD. The development has 29 residential units. It sits on a land area of 2,706 sqm and has a gross floor area of 7,578 sqm. The plot ratio is 2.8.

ST THOMAS MANSIONS is located at 22 St. Thomas Walk, Singapore 238107. It is part of District 09, Orchard / Cairnhill / River Valley, River Valley. The project falls within the Central Region and the CCR market segment.

The nearest rail connection is Great World MRT, approximately 447m away, around 7 minutes on foot. Nearby amenities include 111 Somerset for shopping, NTUC Fairprice Co-operative Ltd for groceries, Zion Riverside Food Centre for food options, and Orchard Fountain Corner for greenery and recreation.

8

How far is St Thomas Mansions from MRT and schools?

Key Takeaway

The nearest MRT/LRT to St Thomas Mansions is Great World MRT, about 447 m away (~7 min walk). 1 school is within 1 km, including 1 primary school.

Getting around

Schools nearby

Homes within 1 km of a primary school qualify for Primary 1 (P1) registration priority.

  • River Valley Primary SchoolPrimary schoolwithin 1 km · P1 priority332 m
  • St. Margaret's School (Primary)Primary school1.3 km
  • School Of The Arts, SingaporeMixed-level school1.4 km
  • Alexandra Primary SchoolPrimary school1.5 km
  • Anglo-Chinese School (Junior)Primary school1.5 km
  • Gan Eng Seng SchoolSecondary school1.6 km
  • Zhangde Primary SchoolPrimary school1.8 km

Shops, food & parks

Mall: 111 Somerset · 362 mSupermarket: NTUC Fairprice Co-operative Ltd · 273 mHawker centre: Zion Riverside Food Centre · 767 mPark: Orchard Fountain Corner · 517 m

Straight-line distances from the development. Source: PropKaki amenities data.

9

Who built St Thomas Mansions and how big is the development?

Key Takeaway

St Thomas Mansions was developed by TG DEVELOPMENT PTE LTD, with 29 units over up to 29 storeys.

Developer
TG DEVELOPMENT PTE LTD
Floors
29 storeys
Blocks
1
Land area
2,706 sqm (29,127 sqft)
Gross floor area
7,578 sqm (81,569 sqft)
Plot ratio
2.80
10

What does it cost to own a unit at St Thomas Mansions?

Key Takeaway

Buying a unit at St Thomas Mansions (~S$1.21M) needs about S$8,884/mo in income and S$4,087/mo in repayments, after S$33,147 stamp duty and a S$303k downpayment.

Illustrative, for a Singapore Citizen buying a unit at the recent median price (S$1.21M) as their first home — 25% down, 30-year loan at 3.5% p.a. Rates as of May 2026. Run it for your own profile →

Buyer's Stamp Duty

S$33,147

BSD, tiered

Downpayment (25%)

S$303k

cash + CPF

Monthly instalment

S$4,087/mo

30y @ 3.5%

Income required

S$8,884/mo

TDSR @ stress rate

Read how to tell if a condo is profitable →

11

How many property agents are active around St Thomas Mansions?

Key Takeaway

8,856 CEA-registered agents closed at least one recorded deal in District 9 — where St Thomas Mansions sits — in the last 12 months, across all property types.

Active agents · 12mo

8,856

District 9 · closed ≥1 deal

Deals on record

69,296

all-time · all property types

Source: CEA public transaction records, attributed to District 9 across HDB, condo and landed (agent activity isn't published at project level). Browse the agent directory or compare every market segment.

Keep going in the PropKaki app

Thinking about St Thomas Mansions? Ask before you commit.

A fair-value read, recent comps and what a unit really costs — from St Thomas Mansions's own transactions.

Ask PropKakiTry on WhatsApp
PropKaki
Is St Thomas Mansions a good buy, and what are units selling for?

Recent units at St Thomas Mansions sold close to their fair value — solid, no obvious overpay.

Ask anything about Singapore property…
12

Frequently asked questions about St Thomas Mansions

Is St Thomas Mansions freehold?⌄

Yes. St Thomas Mansions is freehold, so ownership does not run out.

How old is St Thomas Mansions?⌄

St Thomas Mansions was completed (obtained TOP) in 1986, so it is about 40 years old.

Is St Thomas Mansions a good investment?⌄

Of 31 units at St Thomas Mansions that were bought and later resold (bought from 1995, resold up to 2011), 61% sold for more than they were bought for, with a median gain of 7% over a median 1.6-year hold (URA caveats, before stamp duty, agent fees and interest). Its gross rental yield is about 1.9%. Past resale results don't predict future returns, and this is not financial advice.

Is St Thomas Mansions an EC?⌄

No. St Thomas Mansions is a private apartment development, not an executive condominium (EC).

Who is the developer of St Thomas Mansions?⌄

St Thomas Mansions was developed by TG DEVELOPMENT PTE LTD.

What is the price of a condo at St Thomas Mansions?⌄

Units at St Thomas Mansions have recently sold for around S$1.21M (S$732 psf), the median of the last 12 URA caveats to Dec 2005. The price depends on size, floor and facing.

Where is St Thomas Mansions located?⌄

St Thomas Mansions is at 22 St. Thomas Walk, Singapore 238107, in River Valley (District 9). The nearest MRT station is Great World MRT, about 447 m away.

How many units are there in St Thomas Mansions?⌄

St Thomas Mansions has 29 units in 1 block, up to 29 storeys high.

How much do I need to earn to buy at St Thomas Mansions?⌄

For a unit around S$1.21M as a first home, you'd need roughly S$8,884/mo in income (assessed at the stress-test rate), with repayments near S$4,087/mo after a S$303k (25%) downpayment and S$33,147 Buyer's Stamp Duty.

Are prices at St Thomas Mansions going up?⌄

The median price per square foot at St Thomas Mansions has risen about 4% between 1995 and 2005, based on URA caveats. The year-by-year figures are in the price-trend table above.

Which primary schools are within 1 km of St Thomas Mansions?⌄

River Valley Primary School is within 1 km of St Thomas Mansions. Homes within 1 km of a primary school get priority in Primary 1 (P1) registration.