BDA/ERRCS In-Building Radio Requirements Michigan | TCG

BDA/ERRCS Requirements: What Michigan Building Owners Need to Know in 2026

When firefighters walk into your building during an emergency, their radios have to work — in the stairwell, in the basement, in the back corner of the warehouse. If those radios drop out, the people who came to help lose contact with each other at the worst possible moment.

That’s the problem in-building public safety radio systems solve, and it’s increasingly the problem Michigan fire marshals are asking building owners to prove they’ve solved. If you manage a school, municipal building, manufacturing plant, or healthcare facility, here’s a plain-English look at what BDA and ERRCS systems are, what the codes require in 2026, and how to tell whether your building is actually covered.

What Is a BDA/ERRCS System?

A BDA (Bi-Directional Amplifier) — part of what’s formally called an ERRCS, or Emergency Responder Radio Communication System — amplifies public safety radio frequencies inside a building so first responders can communicate reliably no matter where they are. Modern construction is the culprit here: low-E glass, metal roofing, concrete, and below-grade levels all block the radio signals that police, fire, and EMS depend on. A BDA system captures the outside signal, boosts it, and distributes it through antennas so coverage reaches every corner of the structure.

You may also hear these called ERCES (Emergency Responder Communications Enhancement Systems) or public safety DAS (Distributed Antenna System). The terminology varies; the goal doesn’t — uninterrupted radio coverage for the people responding to your emergency.

The Codes Driving Compliance in 2026

Three documents shape what’s required, and they’re moving this year:

IFC 510 (International Fire Code, Section 510) establishes the baseline requirement for emergency responder radio coverage in new and existing buildings. This is usually the section your local authority cites when a system is required.

NFPA 1225 (Standard for Emergency Responder Communications Enhancement Systems) governs how the system is designed, installed, and tested — coverage thresholds, signal survivability, battery backup, and monitoring.

NFPA 72 (2025 edition) is rolling into many jurisdictions starting in 2026, and it sits alongside NFPA 1225. As adoption moves forward, building owners and contractors are working through how the fire alarm and ERRCS requirements relate to one another.

Adoption is decided locally, so the exact edition and thresholds depend on your jurisdiction and your fire marshal. The safe assumption for any new construction, major renovation, or change of occupancy in Michigan: assume emergency responder radio coverage will be evaluated, and verify the requirement early in the project rather than at final inspection.

Compliance Is More Than Installing Antennas

The most common — and most expensive — misconception is that a BDA system is “install it and you’re done.” It isn’t.

NFPA 1225 generally requires ongoing verification, including annual inspection and testing, coverage grid testing to confirm signal strength across the building, and battery-backup checks to confirm the system survives a power loss. Systems also have to meet survivability requirements so the cabling keeps working during a fire, not just on a clear day.

In practice, that means a BDA system is a long-term commitment, not a one-time purchase. A system that passed at commissioning can drift out of compliance as the radio environment changes, equipment ages, or batteries weaken — which is exactly why annual testing exists.

How to Tell If Your Building Is at Risk

A few signs it’s worth getting ahead of this:

– You’re planning new construction, an addition, or a change of use, and haven’t confirmed whether emergency responder radio coverage is required.
– You have below-grade levels, large metal or concrete structures, or recent energy-efficient window upgrades.
– You had a system installed years ago and can’t point to a recent annual inspection report.
– Your fire marshal has mentioned radio coverage, a “DAS,” or a “responder radio” test during a walkthrough.

If any of those sound familiar, a coverage assessment is the low-cost first step — it tells you where you actually stand before a failed inspection forces the timeline.

How TCG Helps Michigan Facilities Stay Covered

At TCG, public safety communication is core to what we do. We design, install, and maintain BDA/ERRCS systems for municipalities, K-12 schools, manufacturers, healthcare systems, and government facilities across Southeast Michigan — Macomb, Wayne, Oakland, and Genesee counties.

Because we also handle https://tcgexperts.com/paging-and-public-address-solutions/, and the structured cabling underneath it all, we look at responder radio coverage as one piece of a building’s complete life-safety communications picture — not an isolated box on the wall. And through our https://tcgexperts.com/servicepak-on-site-service-and-repair-24-7/, we keep systems in compliance year after year with the annual testing the codes require, so a passing inspection today doesn’t become a surprise tomorrow.

We’ve been doing this work in Michigan since 2010, and as a WBE-certified contractor we’re a strong fit for public-sector and government procurement.

Get a Free In-Building Radio Coverage Assessment

If you’re not sure whether your building meets current emergency responder radio requirements — or whether your existing system would pass its next test — we can help you find out. https://tcgexperts.com/erces-checklist/ and we’ll give you a straight read on where you stand, with no obligation.

This article is general information, not code guidance for a specific project. Always confirm requirements with your local authority having jurisdiction (AHJ).