The P1 Registration & 1km Rule: A Property Buyer's Guide

In short: Living within 1 km of a primary school gives Singapore-citizen children the top distance-priority tier in Primary 1 (P1) registration — but it is not a guarantee, the distance is measured as a straight line (not a walking route), and using home-based priority commits you to living at the address for about 30 months. This guide explains how the rule actually works before you buy or rent for it.

Why the "1km rule" drives property decisions

Every year, families buy or rent homes specifically to fall inside a sought-after school's catchment. The reason is MOE's home–school distance priority: when a primary school is oversubscribed, places are allocated by how close the child lives to the school. For popular schools, being inside the 1 km band can be the difference between a place and a ballot. That is why homes near schools such as Nanyang, Tao Nan, Ai Tong, Rosyth and Henry Park carry a measurable demand premium.

Before you pay that premium — in a purchase price or in rent — it pays to understand exactly what the rule does and does not give you.

How Primary 1 registration works

Registration runs in sequential phases. Earlier phases are for children with the strongest ties to the school; distance only becomes decisive in the later, open phases.

• Phase 1 — child has a sibling currently studying in the school. Guaranteed.
• Phase 2A — a parent or sibling studied there, a parent is a staff member or on the School Advisory/Management Committee, or the child was in the school's MOE Kindergarten.
• Phase 2B — parent has volunteered at the school (at least 40 hours), is a member of the affiliated church or clan, or is an endorsed community leader. 20 places are reserved for this phase.
• Phase 2C — open to all children not yet registered. 40 places are reserved for this phase. This is where most families without connections compete, and where home–school distance decides priority.
• Phase 2C Supplementary — for children still without a place; they re-apply to schools with remaining vacancies. There is no separate reserved pool — it shares whatever is left from 2C.

The distance priority tiers

From Phase 2B onward, when a phase is oversubscribed, applicants are admitted in this order:

1. Singapore Citizens (SC) living within 1 km
2. SC living between 1 km and 2 km
3. SC living beyond 2 km
4. Permanent Residents (PR) within 1 km
5. PR between 1 km and 2 km
6. PR beyond 2 km

Two things follow from this order. First, citizenship outranks distance: an SC living beyond 2 km is still admitted before any PR. Second, PR intake is capped (broadly around a quarter to a third of places per school), so for most PR families Phase 2C is effectively the only realistic phase — which makes the distance strategy even more important for them.

How balloting actually works

Balloting is a computerised, centrally-run draw — not a queue and not first-come-first-served. Places cascade down the tiers above. If a tier has fewer applicants than remaining places, everyone in it is admitted and the leftover places flow to the next tier. A ballot is only triggered within the single tier where applicants exceed the remaining places.

The practical implication: at the most oversubscribed schools, even the within-1 km citizen tier can go to a ballot. Being inside 1 km improves your odds substantially, but it does not guarantee a place. Always check the school's most recent vacancy and balloting outcome on MOE's published data before assuming 1 km is enough.

How the 1km distance is measured (the #1 misunderstanding)

MOE measures the straight-line ("as the crow flies") distance from your home to a designated central reference point of the school. It is not the walking route, the driving distance, or a Google Maps estimate — a home that is a 1.3 km walk may still be well within 1 km in a straight line, and vice-versa.

The only measurement that counts is the official one. Verify any specific address using the government's OneMap School Query tool before you commit to a purchase or a lease.

The 30-month residency rule — and the risks

To use home-based (distance) priority, you must live at the registered address for at least 30 months from the start of the registration exercise. This applies to buyers and renters alike. Key points:

• For an uncompleted (new-launch) home, the count starts from move-in — so buyers timing a purchase to a school catchment must confirm the project's completion lines up with the 30-month requirement.
• MOE conducts address spot-checks. Giving a false address is a prosecutable offence: parents have been charged and fined in court.
• A caregiver's address (e.g. a grandparent's home) can be used, but it is downgraded to the 1–2 km tier even if it is within 1 km, and the childcare arrangement must genuinely be maintained there for the full period.

Buy or rent within 1km?

Both routes secure the same distance priority; the trade-off is financial.

• Buying locks in the address permanently, captures any catchment price appreciation, and avoids landlord risk — but ties up capital, stamp duty and, for a second property, ABSD.
• Renting is cheaper upfront and flexible, but gives no asset upside and still binds you to the 30-month residency and spot-checks. Sub-letting your priority address back out breaks the rule.

Model both before deciding. Our buy-vs-rent calculator and affordability calculator let you compare the real cost of each path for a specific home.

Is the school premium worth it?

Be honest with the numbers. Rigorous studies put the pure school-proximity effect at roughly 2–4% for most schools, with a handful of elite catchments commanding more. But MRT access, lease decay, project age and entry price routinely move a home's value more than the school does. A few standout catchments have shown outsized long-run gains; many have not. The sensible approach is to buy a home that stands on its own merits first, and treat the catchment as a bonus rather than the entire investment case. A home that is also within 1 km of a second popular school is the strongest catchment play, because it holds demand best on resale.

A practical checklist

• Confirm the exact straight-line distance on OneMap School Query — do not trust a walking-route estimate.
• Check the school's latest vacancy and balloting data on MOE to see whether within-1 km actually cleared without a ballot.
• Confirm you can meet the 30-month residency rule at that address.
• For a new launch, check that completion timing fits the residency window.
• Decide buy vs rent on the numbers, not the fear of missing out.
• Shortlist homes that also sit near a second good school for resilience.

Rules and reserved-place numbers reflect the framework as of 2026 and can change between exercises. Always confirm the current phases, dates and distance rules on the official MOE Primary 1 registration pages before acting.