What do Singapore's Radio-communication Regulations actually require of a building owner?

Nothing about coverage. The Telecommunications (Radio-communication) Regulations govern who may possess and operate radio-communication apparatus, on which frequencies and under which licence — they regulate equipment and spectrum, not buildings. There is no provision in them, and none in the SCDF Fire Code or IMDA's COPIF, that obliges a building owner to deliver a working two-way radio signal inside their building. What the Regulations do bite on is the moment you install a repeater or booster to fix a coverage problem: that equipment must be type-approved and licensed, and the liability for an unlicensed installation sits with whoever operates it.

I write this because the question is now being asked the wrong way round. Building owners are being pointed at the Regulations as though they contained a coverage standard, then finding that they read like a licensing instrument — because that is what they are.

What the Radio-communication Regulations actually regulate

The Regulations sit under the Telecommunications Act and deal with the licensing of radio-frequency spectrum, the use of that spectrum, and the operation of radio-communication stations and networks. In practice that means three things for anyone putting radio into a building: the equipment must hold IMDA type approval before it is imported, sold or used; the station or network must hold the correct licence class; and the assigned frequency belongs to the licensee, not to the building.

Offence provisions under the Act are not trivial — a fine not exceeding S$10,000, imprisonment of up to three years, or both, with a further fine of up to S$1,000 for each day a continuing offence persists. Verify the current figures against the Act before quoting them in a tender. The practical point stands regardless: an unlicensed in-building repeater is a regulatory exposure, not a technical shortcut. That is the subject of our separate note on IMDA licensing and type approval for in-building repeaters and boosters.

Then what does COPIF require of a building owner?

COPIF — the Code of Practice for Info-communication Facilities in Buildings — is the instrument that does impose duties on owners and developers, and it is routinely mistaken for a coverage rule. It requires that space, access and facilities be made available to licensed telecommunication operators. That includes rent-free Mobile Deployment Space: the owner must provide the space and may not charge the licensee rent for it, with the allocation scaling to the size of the development, and 40 m² required in every facility building or underground MRT station for road and MRT tunnel developments.

Read that carefully. COPIF obliges you to give the mobile operators somewhere to put their equipment. It does not oblige you to achieve any signal level anywhere, it does not mention two-way radio, and a private walkie-talkie DAS is not a licensed operator's installation. We covered where the 2026 COPIF review lands on this in our review of the COPIF changes.

Has Singapore considered making in-building reception mandatory?

Yes, and declined. The question of requiring building owners to ensure that emergency radio broadcasts can be received in basements was put to the Minister for Home Affairs in Parliament. The answer was that the public need not depend on FM broadcasts alone — the SGSecure app, television, radio, social media and SMS alerts all carry emergency messaging — and that the next-generation Public Warning System, rolling out progressively from 2024, will broadcast voice messages and interface with in-building PA systems.

That is the clearest statement available of the Singapore position: the state solved the emergency-messaging problem by adding channels, not by regulating buildings. Anyone waiting for a Singapore equivalent of IFC Section 510 should plan on the basis that it does not exist and is not imminent.

So what actually obliges an owner to fix coverage?

Contract, insurance and operations — in that order. Where a coverage requirement exists in a Singapore building, it is almost always because someone wrote it into a tender, a facilities-management scope or a hotel brand standard. That is why the numbers matter more here than they would under a code: with no statutory threshold to fall back on, the specification is the only thing that makes a system auditable.

The figures we design and accept against:

• −95 dBm at the portable as the design threshold for reliable DMR voice

• 10 dB fade margin for standard commercial, 15 dB for mission-critical

• 95% area coverage as the default design target

• 4 W (36 dBm) portable against a 40 W (46 dBm) repeater — a 10 dB asymmetry, 13 dB once 3 dB body loss is counted, which is why uplink usually fails first

• 15–25 dB loss per reinforced-concrete floor slab, 25–35 dB through an RC core or shaft wall

None of those are Singapore regulatory limits. They are engineering defaults, and they should be written into the contract as such rather than implied.

Related questions

Does a building owner need IMDA approval to let a tenant install a repeater on the roof? The licence attaches to the operator of the station, not the landlord, so the tenant applies. The owner should still make the licence a condition of the roof-access agreement, because an unlicensed transmitter on your roof becomes your problem when IMDA traces the interference.

If there is no coverage regulation, why do Singapore tenders keep quoting −95 dBm? Because consultants borrow the figure from US fire codes, where it is statutory. It is a sound threshold and we use it too — but here it is contractual, and it means nothing without a stated fade margin and coverage percentage attached.

Does the Fire Code require radio coverage for SCDF responders? Not as a measured signal level. Singapore has no prescribed responder-coverage percentage or dBm figure, which is the substantive difference from jurisdictions operating under IFC 510 or NFPA 1225.

How Suneast handles this

We design and build in-building two-way radio systems in Singapore against a written, measurable specification, because no code will supply one for you. That means a survey before a number is promised, a link budget computed in both directions with the uplink identified as the limiting path where it is, and an acceptance test on a stated grid at a stated threshold and margin. On the regulatory side we handle the IMDA type-approval and station or private-network licensing that the Radio-communication Regulations do require, so the system that passes its coverage test is also the system that is legal to switch on.