If you have just booked an HDB BTO flat, the Optional Component Scheme (OCS) is one of the first decisions you will need to make — and it can significantly shape the starting point of your renovation. The HDB optional component scheme lets buyers select key fittings and finishes to be pre-installed before key collection, with costs bundled into the flat’s purchase price. Understanding exactly what is on offer, what it costs, and when to opt in or out can save you both time and money.
- The HDB OCS allows BTO buyers to select pre-installed flooring, sanitary fittings, and internal doors — bundled directly into the flat’s purchase price.
- Costs range from approximately $6,000 to $9,000 for a 3-room flat (all packages combined), with 4-room and 5-room flats priced higher.
- OCS costs are incorporated into the flat price and can be paid via HDB loan or CPF — no upfront cash is required during renovation.
- The decision to opt in or out is made at your flat booking appointment; it generally cannot be changed afterwards.
- Not all BTO flats offer OCS — PPVC-constructed flats and short-wait BTO projects come with finishes pre-installed and cannot be opted out of.
The OCS is straightforward in principle but easy to misunderstand in practice — particularly when it comes to what is actually included, how it compares to engaging your own contractor, and what happens after you collect your keys. Here is everything you need to know before making that decision.
What Is the HDB Optional Component Scheme?
The HDB Optional Component Scheme is a programme that allows buyers of new Build-To-Order (BTO) flats to select certain essential fittings and finishes to be installed in their homes before key collection. Rather than receiving a bare unit with only basic plastered walls and an unfinished floor, buyers who opt in receive flooring, sanitary fittings, and internal doors pre-installed as part of the flat handover.
The key advantage is financial: the cost of OCS selections is added directly to the overall flat price. This means the expense can be absorbed into your HDB housing loan or funded through your CPF Ordinary Account, rather than being paid out of pocket during the renovation phase — a time when many new homeowners are already stretched thin.
The OCS is entirely optional. Buyers who prefer to fully customise their flat from scratch — choosing their own tiles, fixtures, and doors — can opt out and engage their own renovation contractors independently.
What Does the HDB OCS Include?
The OCS is broken down into distinct packages, which buyers may select individually or in combination depending on what is available for their specific BTO project.
Flooring Package
The flooring package typically includes polished porcelain tiles for the living room, dining area, and dry kitchen, and vinyl floor strips for the bedrooms. These are mid-range, functional finishes — practical and durable, but not particularly distinctive in design. Buyers who want a specific aesthetic, premium materials, or a unified flooring type across all rooms will generally find the OCS flooring package limiting.
Sanitary Fittings Package
The sanitary fittings package covers a wall-mounted wash basin with tap mixer and a shower set with bath/shower mixer, installed in both the common bathroom and the master bathroom where applicable. These are basic but functional fittings — suitable for immediate use on key collection day. Buyers who have specific brands, styles, or water pressure requirements in mind for their bathrooms may prefer to source their own fittings independently.
Internal Doors Package
The internal doors package covers bedroom and bathroom doors. As with the other packages, the doors supplied are functional and meet HDB’s standards, but are standard in design. If a particular interior style — such as barn doors, flush panel doors, or timber-look finishes — matters to your renovation vision, you may choose to opt out and specify your own.
2-Room Flexi Flat Options
For buyers of 2-room Flexi flats, the OCS scope tends to be broader. In addition to flooring and sanitary fittings, options may include built-in kitchen cabinets with appliances, built-in wardrobes in the bedroom, a folding door, window grilles, and basic lighting. This reflects the smaller unit size and the needs of elderly residents who frequently occupy these flats.
How Much Does the HDB OCS Cost?
OCS package pricing varies by flat type. Based on figures published in 2023 — which remain indicative though subject to adjustment by HDB for each BTO launch — approximate costs are as follows.
For the flooring package: approximately $3,340 for a 3-room flat, $4,970 for a 4-room flat, and $6,060 for a 5-room flat. For the internal doors and sanitary fittings package: approximately $2,770 for a 3-room flat, and $3,180 for both 4-room and 5-room flats.
A 3-room flat buyer who selects all available packages can expect total OCS costs of roughly $6,000 to $9,000, integrated into the flat’s purchase price. Larger flat types see correspondingly higher figures. Exact pricing for any given BTO project is confirmed by HDB at the time of the sales launch.
It is worth noting that HDB procures OCS components in bulk, which generally makes the scheme cost-competitive compared to engaging private contractors for equivalent work. The trade-off is design choice and customisation — buyers receive functional, standard-grade components rather than custom selections.
Is the HDB OCS Worth Opting Into?
Whether the OCS is right for you depends primarily on your renovation ambitions and timeline. There is no universally correct answer — it comes down to how much of the OCS finishes you plan to keep.
If you intend to carry out a full renovation regardless — upgrading flooring, replacing sanitary fittings, and installing custom doors — the OCS may represent a sunk cost. You would be paying for components that will be hacked out and replaced before you even move in. In such cases, opting out and directing that budget towards your preferred finishes makes considerably more sense.
On the other hand, if you plan a phased renovation or wish to move in quickly with minimal upfront renovation work, the OCS provides a liveable baseline. Some buyers opt in for sanitary fittings only — giving them functional bathrooms from day one — while skipping the flooring package to install their own tiles at a later stage. This flexibility to select individual packages (rather than committing to all or nothing) makes the OCS more useful than it might initially appear.
The ability to finance OCS through CPF or an HDB loan is also a meaningful consideration. If managing cash flow during the renovation period is a concern, having OCS costs absorbed into the mortgage reduces financial pressure at a time when renovation spending is already significant.
How and When to Opt In or Out of OCS
The OCS decision is made at your flat booking appointment — the session at which you formally select your unit and confirm your purchase. HDB presents the available OCS packages at this point, and you indicate whether you wish to opt in, partially opt in, or opt out entirely.
This is a fixed decision point. Once the booking appointment has passed, buyers are generally unable to retrospectively opt in, as HDB’s contractors work to construction and supply schedules that cannot accommodate late additions. Equally, buyers who opt in cannot easily reverse their selection after the appointment.
It is therefore essential to arrive at your booking appointment having already researched your renovation plans and budget in detail. Consider consulting a renovation contractor before your appointment — not after — so you have clarity on what your renovation scope will include and whether OCS packages will complement or conflict with that plan.
Which BTO Flats Do Not Offer the OCS?
Not all BTO flats make the OCS available. Flats built using the Prefabricated Prefinished Volumetric Construction (PPVC) method — where factory-built modular units arrive with finishes and fittings already installed — do not offer buyers an opt-out option for these pre-installed components. The finishes come as part of the construction method itself.
Similarly, BTO projects with shorter waiting times, where units are significantly more construction-complete at the point of sale, typically come with floor finishes, internal doors, and sanitary fittings already included without the option to decline. Buyers of these projects should confirm at their booking appointment precisely what is and is not pre-installed.
Under HDB’s Standard, Plus, and Prime flat classification framework introduced from October 2024, the OCS continues to operate on the same basis as before. The new classification system relates primarily to location attributes, subsidy conditions, and resale restrictions — not to the operational structure of the OCS.
Planning Your Renovation After OCS Key Collection
Collecting your keys is just the beginning. Whether you opted in or out of the OCS, most homeowners will need renovation work beyond what the scheme provides — and this is where engaging the right contractor matters enormously.
Common renovation works that follow OCS key collection include feature wall installation, painting, and surface finishes; custom carpentry covering kitchen cabinets, wardrobes, TV consoles, and shelving; electrical rewiring and lighting; air conditioning installation; flooring upgrades or additional areas not covered by OCS selections; full bathroom and toilet renovation beyond basic sanitary fittings; and hacking or modification of walls and partitions.
At Hock Star, we work directly with BTO homeowners at exactly this stage — after keys are collected, OCS decisions have been made, and the full renovation begins. As a direct renovation contractor, we handle the complete scope from hacking and structural work through to final handover, with no subcontracting and no middlemen. Explore our completed renovation projects to see the standard of work we deliver.
When you are ready to plan your BTO renovation, contact our team directly at hockstar.sg/contact for a no-obligation consultation and quote.
Frequently Asked Questions About the HDB Optional Component Scheme
What exactly is the HDB Optional Component Scheme and how does it differ from a standard bare BTO unit?
The HDB OCS is an optional add-on that lets BTO buyers select pre-installed fittings — flooring, sanitary ware, and internal doors — bundled into the flat purchase price. A standard bare BTO unit is delivered with plastered walls and an unfinished cement screed floor; OCS brings it to a liveable baseline before key collection, with costs paid through the flat’s purchase financing.
Can I choose individual OCS packages without taking all of them at once?
Yes. The OCS packages are modular. A buyer can opt in for sanitary fittings only, for example, while declining the flooring and internal doors packages. The specific packages available vary by BTO project, so buyers should review what is on offer at their specific sales launch.
Will OCS tiles or doors affect my renovation plans if I want to change them later?
Yes — in a practical and financial sense. If you opt in for flooring and later decide to replace the tiles, your renovation contractor will need to hack them out, which adds cost and generates material waste. If you already know you will be replacing the flooring as part of your renovation, it is generally more cost-effective to opt out during your booking appointment.
How much does it typically cost to renovate an HDB BTO flat after key collection, and does the OCS reduce that cost?
Full renovation costs for a new BTO flat typically range from $30,000 to $80,000 depending on unit size, scope, and finishes. The OCS can modestly reduce baseline costs for buyers who retain the pre-installed components, but most homeowners undertaking a full renovation find their contractor costs are largely independent of OCS selections — particularly when OCS items are removed and replaced as part of the works.
Is the HDB Optional Component Scheme available for resale flats in Singapore?
No. The OCS is only available to buyers of new BTO flats. Resale flat buyers purchase units in their existing condition and arrange all renovation works independently through their chosen contractors, with no HDB-administered scheme for pre-installation.
Disclaimer: For the most accurate and up-to-date OCS information, please consult HDB directly at hdb.gov.sg or visit your nearest HDB Branch. Information in this article is for general guidance only.