Tian Boon Siew (Sebastian)
Associate Group Director, PropNex
PROPNEX REALTY PTE. LTD.
Sales-led HDB agent in Punggol, Sengkang & District 19
- deals on record
- 90 Jan 2017 to Apr 2026
- active since
- ≤2017 CEA records begin in 2017
- sales
- 91% of 11 deals since Jan 2025
- latest deal
- Apr 2026 CEA records
At a glance
Tian Boon Siew is a PropNex property agent (CEA R053697D) with 90 transactions on record since 2017, when CEA's public records begin. Since January 2025, 9% of deals were rentals and 91% sales, most often acting for sellers. The most active area is Punggol, with 43 deals.
- Sales specialist91% of deals since Jan 2025 were sales (10 of 11)
- HDB focus83% of all 90 recorded deals
- Often acts for sellers55% of deals since Jan 2025 (6 of 11)
Experience
Deals per year
Every transaction in CEA's public records.
- 232017
- 162018
- 82019
- 72020
- 62021
- 42022
- 102023
- 52024
- 52025
- 62026
2026 is year to date. Recent months may be incomplete in the CEA dataset.
Experience
Recent deal mix
Since Jan 2025 (11 deals)
Expertise
Where Tian Boon Siew (Sebastian) works
Private homes are recorded by postal district, HDB flats by town.
Expertise
Clients and property types
Across all recorded deals.
Who they act for
Property types
Questions
About Tian Boon Siew (Sebastian)
Is Tian Boon Siew a registered property agent?
Yes. Tian Boon Siew is on the CEA public register under R053697D with PROPNEX REALTY PTE. LTD. (licence L3008022J); the registration is valid to 31 Dec 2029. Checked 8 Nov 2026.
Which areas is Tian Boon Siew most active in?
By CEA records: Punggol (HDB town): 43 deals; Sengkang (HDB town): 10 deals; District 19 (Serangoon Garden, Hougang, Punggol): 6 deals; Ang Mo Kio (HDB town): 5 deals.
Does Tian Boon Siew mainly handle sales or rentals?
Since January 2025: 1 rentals (9%) and 10 sales (91%) out of 11 transactions.
Who does Tian Boon Siew usually represent?
Across all records: buyers 58 (64%), sellers 29 (32%), tenants 2 (2%), landlords 1 (1%).
How long has Tian Boon Siew been active as a property agent?
Tian Boon Siew has transactions on record from Jan 2017, which is when CEA's public transaction records begin, so their career may be longer. The current registration with PROPNEX REALTY PTE. LTD started on 4 Sep 2019.
How can I contact Tian Boon Siew?
Send an enquiry from this page and Districtpedia will pass it to Tian Boon Siew, or contact them through PROPNEX REALTY PTE. LTD.
Contact
Send an enquiry
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Other agents active in District 19
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Sources
How this profile is built
Transaction figures: 90 records for R053697D from the CEA salesperson transaction records on data.gov.sg, retrieved 8 Nov 2026, covering Jan 2017 to Apr 2026. "Recent" means since 1 January 2025. Area shares use the 90 records with a postal district (private) or HDB town. Registration: CEA public register of salespersons, checked 8 Nov 2026. The records do not include prices, commissions or client feedback. Districtpedia does not rank agents. Report a correction.