Causewayz Square has two dual-key layouts: the 592 sq ft Type B in Axis tower (two rooms, two bathrooms, one parking bay) and the 850 sq ft Types F1/F2 in Brixton and Dover (three bedrooms, two bathrooms, two parking bays). Each is one title with one SPA and one loan, but two lockable sections, so you can live in one part and rent the other, rent both, or let the whole unit later. Target completion is around 2030, about 800 m from the Bukit Chagar RTS station.
A dual-key condo in JB is one of the most flexible ways to own near the Causeway, and Causewayz Square is one of the few new launches beside the JB CIQ that offers it in both a compact and a family-sized format. This guide focuses only on the dual-key angle: how a dual-key unit works legally and practically, which Causewayz Square layouts have two keys, the live-in-one, rent-the-other strategy, simple rental arithmetic, and what to check on the floor plan before you book. For every other layout, see our Causewayz Square unit types guide; for the project as a whole, start with the Causewayz Square project page.
What is a dual-key condo in JB?
A dual-key condo is a single unit with two separate lockable entrances, so it can be used as two self-contained spaces while remaining one property on paper.
In practice this means a main section (usually with the living room and kitchen) and a smaller section (usually a bedroom suite with its own bathroom and sometimes a pantry corner), each reached through its own door from the common corridor or a shared foyer. The two sections are usually linked by an internal connecting door that can be locked or left open.
What makes a dual-key condo in JB different from buying two small units is the paperwork:
- One title and one SPA. You sign one sale and purchase agreement for one unit, so legal fees and stamp duty are worked out on one purchase price rather than two.
- One housing loan. The bank finances one property. That can matter if you already own other homes, because Bank Negara Malaysia caps the loan-to-value ratio at 70% from a borrower’s third housing loan onward.
- One maintenance bill. Service charge and sinking fund are charged on the whole built-up area.
- Two income options. You can let each section on its own tenancy, or combine them and let the whole unit to one household.
This combination of one purchase and two uses is why dual-key layouts are popular with owner-occupiers who want help with the monthly instalment, and with investors who prefer two smaller rent cheques to one larger one.
Which Causewayz Square units are dual-key?
Two Causewayz Square layouts are dual-key: Type B in Axis and Types F1/F2 in Brixton and Dover. Every other layout, from the Type A studio to the E1/E2 3-bedroom, is a conventional single-key unit.
| Dual-key type | Tower | Built-up | Rooms / baths | Parking | Typical use |
|---|---|---|---|---|---|
| Type B | Axis (908 units, up to 63 storeys) | 592 sq ft | 2 rooms / 2 baths | 1 bay | Two compact keys; commuter own-stay plus one tenant, or two tenants |
| Type F1 / F2 | Brixton (1,257 units) and Dover (1,527 units) | 850 sq ft | 3 bedrooms / 2 baths | 2 bays | Family-size main home plus a rentable suite, or multi-generation living |
Both sit inside a freehold, approximately 7.7-acre development on Jalan Lumba Kuda in Bukit Chagar, which shares a 29-facility podium and is planned with around 90,000 sq ft of retail. Axis also has a hospitality operator planned (Mana-Mana, which is associated with EXSIM), which may interest Type B owners who would rather have a managed arrangement than self-manage.
Live in one, rent the other: how the dual-key strategy works
The core idea is simple: you occupy the main section and let the smaller section, so the rent helps cover part of your monthly costs while you still live in a new home near the JB CIQ.
Buyers usually use a Causewayz Square dual-key in one of four ways:
- Commuter own-stay plus one tenant (Type B). A single professional who crosses into Singapore on weekdays lives in one key and lets the other to another commuter. With RTS Link passenger service targeted for February 2027 and the Bukit Chagar station about 800 m away, both sides appeal to the same cross-border tenant pool.
- Family home plus a rental suite (Type F1/F2). A family lives in the larger three-bedroom side and lets the smaller suite to a single tenant. Two parking bays help when the household drives.
- Multi-generation living (Type F1/F2). Parents and adult children, or a family and a visiting grandparent, share one address but keep separate doors, bathrooms and routines. Nothing is let out; the dual-key simply buys privacy.
- Two tenants (Type B or F). A pure investor lets both sections separately. This tends to suit owners who are willing to manage two tenancies or appoint a manager.
The real value of a dual-key condo in JB is that you are not locked into one of these choices. A young owner might start with option 1, move to option 4 after relocating, and later combine the keys and let the whole unit to one household. That flexibility across a long freehold holding period is the main reason many buyers short-list the dual-key layouts first.
Dual-key rental math: a simple worked example
The useful question is not how much a dual-key earns in total but how much of your own monthly cost the rented section can carry; the steps below show how to work it out with your own numbers.
Because Causewayz Square is still under construction, there are no rental listings for it yet. The closest guide is what completed condos near Bukit Chagar have been asking in 2026:
| Completed neighbour | Studio (RM/month, asking) | 1-bed | 2-bed | 3-bed |
|---|---|---|---|---|
| R&F Princess Cove | 2,100–2,800 | – | 2,700–3,000 | – |
| TriTower Residence | ~2,740 | – | ~3,075 | ~4,550 |
| Twin Tower Residence | 2,600–3,000 | – | 3,300–3,600 | 3,500–3,700 |
| Suasana Iskandar | – | 2,500–3,200 | 3,000–3,300 | 3,500–3,900 |
These are asking rents for completed, mostly furnished units and are a reference band, not a forecast. Note that the smaller key of a dual-key is usually smaller than a full studio, so it is sensible to price it below the studio band rather than at it.
A simple way to run the numbers:
- Estimate the rent for the rentable section. Start below the studio band above and apply a vacancy allowance (for example, assume 10 or 11 months of rent a year rather than 12).
- Subtract the costs that come with letting. Furnishing amortised over a few years, a share of maintenance, utilities if you include them, repairs and any management fee.
- Compare the net figure with your monthly instalment and maintenance. The result is the share of your housing cost the rented key covers.
Illustration only, using round numbers to show the method: if the rentable key nets RM1,500 a month after costs and vacancy, and your instalment plus maintenance is RM3,000, the key covers about half of your monthly housing cost while you live in the main section. Swap in your own SPA price, loan terms and rent assumptions; WhatsApp us for the latest SPA price list for Type B and Types F1/F2. Our JB rental yield guide shows how to turn the same figures into gross and net yield.
Who rents the smaller key near JB CIQ and the RTS?
The smaller key of a dual-key mainly appeals to single tenants who value location over space, which is exactly the profile that concentrates around the Causeway.
- Cross-border commuters who work in Singapore and want the shortest door-to-checkpoint routine. Causewayz Square is about 600 m from the JB CIQ and about 800 m from the RTS station.
- Professionals working in the JB city centre, including at JB Sentral (about 1.3 km) and around KOMTAR JBCC and City Square (about 1.5 km).
- Weekday or project-based tenants who prefer a furnished, self-contained room with its own bathroom over a shared flat.
For a full breakdown of what tenants pay near the checkpoint, see our JB condo rental prices near the RTS and CIQ. If you are weighing short-stay against long-term letting for the rentable key, check the building’s house rules and the applicable local guidelines first, and keep in mind that a planned hospitality operator in Axis may simplify things for Type B owners.
Type B vs Type F1/F2: which dual-key suits you?
Choose Type B if you want the smaller ticket and a compact two-key investment in Axis; choose Types F1/F2 if you need a family-sized home with a rentable suite and two parking bays.
Type B (Axis, 592 sq ft)
- Best for: single owners, couples without children, and investors focused on the commuter market.
- Strengths: a smaller overall purchase than the family layouts; both keys target the deep pool of single cross-border tenants; access to the Axis Level 60 sky deck with the Wavescape Infinity Pool and Sky BBQ Deck.
- Points to plan: one parking bay for the whole unit, so decide early whether you or your tenant gets it.
Types F1 / F2 (Brixton and Dover, 850 sq ft)
- Best for: families who want to offset costs, multi-generation households, and long-term holders.
- Strengths: two parking bays; the option to let the whole unit as a three-bedroom home later; access to the Level 57 sky garden and the podium children’s facilities.
- Points to plan: compare the F1 and F2 plans to see which side has the larger living area and which has the self-contained suite.
If you want both a dual-key and the lowest entry, Type B is usually the one to look at first. If own-stay comfort is the priority and rent is a bonus, Types F1/F2 tend to fit better. Our EXSIM project comparison sets these layouts beside the Kebun Teh projects, including the triple-key Type B at The Celestz.
Costs and practical points when owning a dual-key condo in JB
Most costs of a dual-key are the same as for any single unit of the same size; the differences are in furnishing, utilities and day-to-day management.
- Purchase costs: one SPA means one set of legal fees and one stamp duty calculation on the single price. Under the Solicitors’ Remuneration Order 2023, scale legal fees are 1.25% on the first RM500,000 and 1% on the next portion; the loan agreement attracts 0.5% stamp duty. Foreign buyers pay a flat 8% instrument of transfer stamp duty from 1 January 2026. Our step-by-step JB buying guide covers these in detail.
- Financing: one loan covers both sections. With the Overnight Policy Rate at 2.75%, it is worth comparing lenders on the full unit price.
- Furnishing: you are effectively furnishing two spaces. Budget for two sets of basic furniture if you plan to let both, or one simpler set for the rental key if you live in the other.
- Utilities: ask whether the two sections have separate meters or share one. If they share, agree a fair split with your tenant or include utilities in the rent.
- Management: two tenancies mean two agreements, two deposits and two check-ins. Many owners living abroad appoint a manager.
- Foreign buyers: in Johor the foreigner minimum is generally RM1 million and state consent is required, so check whether the specific unit qualifies before you plan around it.
What to check on a dual-key floor plan before booking
Before you book a Causewayz Square dual-key, confirm exactly how the two sections are divided, because small differences in layout decide how well each side lets.
- Where each entrance is. Two doors from the corridor give more privacy than two doors from a shared foyer.
- Which bathroom belongs to which section. Each side should have its own; check that neither is reached through the other side.
- Kitchen and pantry. Usually only the main section has a full kitchen. Note whether the smaller key has space for a pantry corner.
- The connecting door. Check its position and that it can be locked from both sides.
- Windows and light. A rentable key with a good window is much easier to let.
- Parking. One bay for Type B, two for Types F1/F2; confirm the bay allocation in your SPA.
- Exact size. The built-up area stated in your SPA is the one that counts.
WhatsApp us for the official Type B and Type F1/F2 floor plans and the latest availability by tower and floor.
Is a dual-key at Causewayz Square right for you?
A Causewayz Square dual-key tends to suit buyers who value flexibility: those who want to live near the JB CIQ and have a tenant help with costs, families who want privacy between generations, and investors who prefer two smaller tenancies.
It may be less suitable if you want a single open-plan home and never intend to let, in which case the single-key D1/D2 or E1/E2 layouts may serve you better. Historically, well-located units near transport have tended to keep tenant interest, and the RTS Link is designed to carry up to 10,000 passengers an hour in each direction with a journey of about five minutes to Woodlands North. That is why a dual-key condo in JB next to the Causeway can be a practical long-term holding. For a broader view of where Causewayz Square fits among other projects close to the station, see our shortlist of condos near the JB RTS.
Sources
- The Edge Malaysia: Causewayz Square towers and unit count
- NST: Binastra lands RM1.2bil contract in Johor (Jan 2026)
- LTA: RTS Link service targeted for February 2027
- PropertyGuru: Causewayz Square @ JBCC listings
- Uchify: JB rental listings
- Bank Negara Malaysia: OPR and housing loan LTV rules
This guide is general information, not financial advice.