Comparison · an address you can locate, a project still in planning
One Chuan Grove vs
Chiltern Park.
Buyers comparing these two usually face a calendar question — a home needed now versus one that may not exist for years — and a trust question: which of these projects actually has its facts in order?
Chiltern Park: an address that exists, with little official detail
Chiltern Park appears in OpenStreetMap as a residential area inside the Serangoon planning area, with a main address — Serangoon Avenue 3 — geocoding inside it. That much is verifiable: it sits in the same corridor this site's transport page covers, so any commute claim can be tested with your own peak-hour trip before you decide.
Everything more specific about Chiltern Park — unit counts, remaining lease, and the price history quoted on listing pages — traces only to portals and agency networks. There is no per-project official record behind those figures, so treat every flat-level claim as something to verify against title documents before planning around it.
Sources: OpenStreetMap way 129496760 (Chiltern Park area), checked 30 October 2026.
One Chuan Grove: two awarded sites, one design study
One Chuan Grove is documented in official sources in exactly two senses — the two Chuan Grove sale sites, and a single design study — and neither settles how the finished project would live. URA PR25-39 records the first site's award to the Sing Holdings / Sunway joint venture on 17 July 2025: a 99-year leasehold, maximum gross floor area of 47,495 m² across a 15,831.5 m² site, tendered at $703.6 million. URA PR25-45 records the second site's tender closing on 4 September 2025, with the award decision still to be publicised.
The developers' own project page, checked 30 October 2026, describes one 24-storey block and four 27-storey blocks, 1,056 apartments from 474 to 1,561 sq ft, seven shop units and a childcare centre — all explicitly preliminary, with no confirmed price list, floor plans or handover date to buy or lease against yet.
What each side settles, and what it leaves open
For Chiltern Park, the decisive checks are physical and documentary: whether a unit on the floor you care about still exists, how its layout and finishes actually feel, and what the title documents say. For One Chuan Grove, the confirmed field is narrow — award dates and a design study — while floor plans, a first price list and a completion schedule are all still awaited. Don't build a budget on either side's portal figures: if you are sizing a mortgage, ask a lender for a quote built on your income, existing debts and the tenor you would actually take, and hold any project-level number to the same standard of proof.
Which of these two answers your question?
Housing needed within the next year or two? Only the resale market can meet that deadline — but any specific Chiltern Park unit, price and lease balance must be evidenced by the seller's papers, not a portal page. Weighing One Chuan Grove instead means planning around a project whose earliest published milestone is only this site's target preview dated 13 February 2027. The buying-considerations page lists what to check in either case.
Chiltern Park's numbers live on portals, not in official per-project documents; One Chuan Grove's official record is two awarded sites and a design study. Decide from documents, not from either side's marketing arithmetic.