Decision guide · HDB upgrader

Owning a home and looking at One Chuan Grove: what to work through before you book

For HDB and condo owners: how the order of selling and buying, the first payments and a roughly three-year build fit together if One Chuan Grove launches as targeted by the first quarter of 2027.

Published: 22 Oct 2026
Last fact-checked: 20 Oct 2026
Reading time: 4 min
Next review: 20 Jan 2027

Filed underDistrict 19 New launch Financing

Quick answer

If you own a home, the order matters more than the price list. Sell first and you buy without extra stamp duty or a lower loan limit, but you need somewhere to live until the keys. Buy first and you keep your home, but you pay Additional Buyer's Stamp Duty upfront and get a lower loan limit unless the conditions are met. Work it out before the preview.

Option 1

Sell first, then book

Simplest for stamp duty and the loan; plan where you live until completion.

Option 2

Book first, sell later

Keep your home meanwhile; budget ABSD upfront and the lower loan limit.

Option 3

Wait and compare

If the timing does not work, a completed home nearby may suit better.

Key takeaways

One Chuan Grove's sales launch is targeted for the first quarter of 2027, subject to approvals; Sing Holdings' accounts put the project's expected completion in 2030, a company estimate rather than a TOP date.
Selling first keeps stamp duty and the loan simple, but leaves you to rent or stay elsewhere until completion.
Booking first means Additional Buyer's Stamp Duty paid upfront and, unless conditions are met, a lower loan limit; a married couple with at least one Singapore citizen spouse can claim a refund only by selling within six months after TOP or CSC, whichever is earlier.
The first 20% is due within about eight weeks of the option; the rest follows the build. Line up cash, CPF and the loan before preview day.
An HDB flat must have passed its minimum occupation period before you buy private property.

This guide is for

HDB owners past their minimum occupation period
Condo owners moving to a newer or larger home

It is not for

First-time buyers: the overview's checklist is enough

What you need to decide

What is left on your loan, and the CPF you used plus accrued interest
What your home may sell for, from recorded sales nearby
Whether you can pay the first 20% and stamp duty without the sale
Where you would live between selling and completion
For an HDB flat: the date its minimum occupation period ends

Step by step

1
Start with the timeline
When would you pay, and when would you move?
Sing Holdings plans to launch One Chuan Grove for sale by the first quarter of 2027, subject to regulatory approvals, and its accounts give 2030 as the project's expected completion year. That is the company's estimate, not a TOP date, but it is a fair planning horizon: book in 2027, pay in stages while it is built, move in years later.
2
Sell first
The simpler route, with a housing gap
Selling before you book means no Additional Buyer's Stamp Duty from owning two homes and the full loan limit, and the sale proceeds can fund the first 20%. The cost is where you live until completion: rent, family or a smaller home. HDB sellers must also move out at resale completion; Resale completion or extension of stay explains the timing.
3
Book first
Keep your home, carry more
Booking first lets you stay put, but you pay Additional Buyer's Stamp Duty upfront as an owner of another home, and the bank applies the lower limit for a second housing loan unless the conditions for leaving the old loan out are met. A married couple with at least one Singapore citizen spouse can apply for a refund if the first home is sold within six months after the new home's TOP or CSC, whichever is earlier. Selling first or buying first sets out the rules and the three routes.
4
Know what the sale releases
Proceeds after the loan and CPF
What your sale leaves in cash is the price less the outstanding loan and the CPF you used, returned to your CPF account with accrued interest. CPF accrued interest when you sell works through it. Your Home Report shows recorded sales around your home.
5
Line up the first payments
What preview day needs
For a home bought from a developer, 20% of the price, including the booking fee, is due upon signing or within eight weeks after the option date; stamp duty is paid on top. Have an in-principle loan approval that counts every existing loan before preview day.

Official rules

Key rules and policies

ABSD refund for married couples
A married couple with at least one Singapore citizen spouse, buying jointly, may apply for a refund of ABSD on a second home if the first is sold within 6 months after the date of purchase of a completed home, or after the TOP or CSC (whichever is earlier) of one under construction.
Last verified 20 Oct 2026
Source: Stamp duty for property (Inland Revenue Authority of Singapore), Updated on 27 Apr 2023. Extracted 20 Oct 2026.
Loan limits
With one outstanding housing loan, a bank may lend up to 45% (or 25% for a longer tenure), with at least 25% in cash, unless the conditions for leaving the existing loan out are met.
Last verified 20 Oct 2026
Source: Rules for new housing loans (Monetary Authority of Singapore), LTV limits for options granted on or after 6 Jul 2018. Extracted 20 Oct 2026.
Payment schedule for a home bought from a developer
20% including the booking fee upon signing or within 8 weeks after the option date; instalments as construction stages complete; 25% after TOP; the last 15% on completion.
Last verified 20 Oct 2026
Source: Housing Developers Rules (Singapore Statutes Online, Attorney-General's Chambers), Current version as at 20 Oct 2026. Extracted 20 Oct 2026.

Common mistakes

Booking first without checking that the downpayment and ABSD can be paid without the sale.
Forgetting where the family will live between selling and completion.
Counting the sale price as cash, before the loan and the CPF refund.

Analysis · opinion

James's practical view

With owners, the first thing I check is whether the downpayment and stamp duty can be paid without the sale. If they cannot, the decision is made for you: sell first, and plan where you will live.

For HDB owners, the housing gap is the part people underestimate. Renting until the developer's expected completion is a long time; for some families a completed condominium nearby, bought after the flat is sold, is the better answer even if One Chuan Grove is the one they like.

For condo owners, booking first can work if the cash is there, but for a married couple claiming the ABSD refund, the six months after TOP or CSC (whichever is earlier) is the deadline that matters. Know what your home is likely to fetch before you commit.

Questions to ask your bank, lawyer or agent

1.My bank: what will it lend with my current loan counted, and what changes once my home is sold?
2.My lawyer: what stamp duty applies on the day I would book, given what I own?
3.James: which order works for my family, and what should my home sell for?

Seen in practice

Case studies and videos where this decision came up.

Case study

635B Senja Road to Copen Grand: buying an EC while still living in the HDB flat

HDB flat, 635B Senja Road, Bukit Panjang; next home an executive condominium at Copen Grand, Tengah

Step 1: Challenge
So the sale had to meet the bridging loan's timeline, while the family still needed somewhere to live until Copen Grand was ready.
Step 2: Strategy
The bridging loan's timeline set when the flat had to be sold.
Step 3: Result
The flat was sold for S$642,000.

Read the case study

Case study

Westcove Condo: selling a large older-layout unit on space, not on price per square foot

2-bedroom condominium, 1,173 sq ft, District 5

Step 1: Challenge
Large units with an older layout can attract a narrower pool of buyers, and buyers may compare them with newer but smaller options.
Step 2: Strategy
I highlighted the usable space, the fact that the unit works for a full household, and the total price. I did not compete purely on price per square foot.
Step 3: Result
The unit marketed by another agent for 3 months and couldn’t sell it. Eventually we took over the listing and it was sold within 3 weeks of marketing and above seller’s price expectations.

Read the case study

Case study

The Blossomvale: selling a low-floor unit facing the main road

3-bedroom condominium with private lift, 1,572 sq ft, District 21

Step 1: Challenge
The unit is on a low floor and faces the main road, which brings a lot of noise and dust.
Step 2: Strategy
I positioned the unit on what it offers: 1,572 sq ft, a private lift and a 999-year lease, for buyers who put space and tenure ahead of the facing.
Step 3: Result
The unit was sold above seller’s price expectations.

Read the case study

Case study

Sol Acres: making one unit stand out in a large development

1-bedroom executive condominium, 495 sq ft, Sol Acres

Step 1: Challenge
Sol Acres is a large development, and there were multiple competing listings in it. This unit had to be differentiated from them.
Step 2: Strategy
I focused the presentation on the reasons to buy this particular unit.
Step 3: Result
The unit was sold above the seller's expectation, to a buyer who valued the privacy that comes with the view.

Read the case study

Frequently asked questions

Can I buy One Chuan Grove while I still own my HDB flat?

Yes, once the flat has passed its minimum occupation period. You pay Additional Buyer's Stamp Duty upfront as an owner of another home; a married couple with at least one Singapore citizen spouse can apply for a refund if the flat is sold within six months after the new home's TOP or CSC, whichever is earlier.

When would I need the money?

20% within about eight weeks of the option, then instalments as the building is completed. The launch is targeted for the first quarter of 2027.

Limitations

Stamp duty and loan rules are summarised; the linked guide and IRAS, MAS and HDB have the detail. Your bank and lawyer confirm your own case.

Sources

1.
Unaudited financial statements for the six months ended 30 June 2026 (SGX announcement, 12 August 2026)
Sing Holdings Limited · Period: Announced 12 Aug 2026 · Extracted 20 Oct 2026
p.18: sales launch targeted for 1Q 2027; p.15: expected completion 2030.
2.
Stamp duty for property
Inland Revenue Authority of Singapore · Period: Updated on 27 Apr 2023 · Extracted 20 Oct 2026
Refund within 6 months after the date of purchase, TOP or CSC.
3.
Rules for new housing loans
Monetary Authority of Singapore · Period: LTV limits for options granted on or after 6 Jul 2018 · Extracted 20 Oct 2026
Loan-to-value limits.
4.
Housing Developers Rules
Singapore Statutes Online, Attorney-General's Chambers · Period: Current version as at 20 Oct 2026 · Extracted 20 Oct 2026
Payment Schedule.

Wong Say Tian (James) · CEA Reg. No. R007728G · +65 9696 9567 · PropNex Realty Pte Ltd · Licence No. L3008022J

General information only, not financial, legal or tax advice. Figures reflect the data period shown and may since have changed; your own circumstances will differ. Full disclaimer.

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New launch · District 19

One Chuan Grove against Chuan Park and recent launches: what would its price have to beat?

Chuan Park's new sales: median $2,680 psf (115 sales, October 2025 to September 2026) as recorded; about $2,800 psf on harmonised floor area if 4% is taken off for air-con ledges, an assumption ($2,770 psf at 3%, $2,830 psf at 5%).

Data: Jan 2017 – Sept 2026Published 22 Oct 2026

Talk to James

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The options at a glance

Sell first, then book

Book first, sell later

Wait and compare

Key takeaways

This guide is for

It is not for

What you need to decide

Step by step

Start with the timeline

Sell first

Book first

Know what the sale releases

Line up the first payments

Key rules and policies

Common mistakes

James's practical view

Questions to ask your bank, lawyer or agent

Related guides

Seen in practice

Frequently asked questions

Limitations

Sources

Continue exploring

Related analysis

Own a home and looking at One Chuan Grove? Map the order with James first.