In-Building Wireless Market Reaches USD 24.4 Billion by 2033 as 6 GHz Wi-Fi Holds 73 Per Cent

In-building wireless is a USD 13.2 billion market that is really two markets

25 October 2026 — The global market for wireless coverage inside buildings is worth USD 13.2 billion in 2025 and will reach USD 24.4 billion by 2033, an 8.0 per cent compound annual growth rate, according to a new market report from Pheonix Research. The report finds that the market is not a three-way contest between distributed antenna systems, CBRS private cellular and 6 GHz Wi-Fi, but a split between two budgets that are growing at very different rates.

Carrier-grade coverage — public-safety in-building systems, carrier and neutral-host cellular DAS, and private CBRS — accounts for USD 3.54 billion, or 26.9 per cent of the market. Building-owned 6 GHz Wi-Fi, the Wi-Fi 6E and Wi-Fi 7 estate that a landlord, hospital or school runs for itself, accounts for USD 9.62 billion, or 73.1 per cent.

The 150,000 square foot test case

Pricing the same building three ways shows why. At 150,000 square feet, a public-safety DAS costs about USD 105,000 at USD 0.70 per square foot, a carrier or neutral-host cellular DAS about USD 240,000 at USD 1.60 per square foot, a four-radio CBRS private network about USD 60,000, and a 6 GHz Wi-Fi upgrade about USD 68,400 for 38 access points at USD 1,800 installed.

The cellular DAS therefore carries a 3.5 times cost premium over the Wi-Fi upgrade for the same floorplate. It is also the only one of the four that a building code can compel.

The fire code is the most reliable buyer in the market

Section 510.1 of the International Fire Code requires approved radio coverage for emergency responders in all new buildings, measured at 95 per cent of general floor area and 99 per cent of designated critical areas, at a delivered audio quality of 3.0, using equipment listed to UL 2524 and installed to NFPA 1225. The retrofit provision in Section 1103.2 carries the same requirement into existing buildings. Public-safety systems are the second-fastest-growing line in the report at 9.8 per cent a year, and the only line whose demand does not depend on anybody deciding that wireless matters.

The report estimates that 60 per cent of US commercial floorspace in buildings over 100,000 square feet currently lacks compliant coverage. Every percentage point of annual conversion is worth roughly USD 139 million of public-safety work.

CBRS: 420,000 radios, very few of them indoors

The report finds that the CBRS deployment celebrated by its advocates is overwhelmingly not an in-building deployment. The OnGo Alliance counts more than 420,000 CBRS devices deployed in the United States by 2025 across more than 1,000 operators using General Authorized Access — an average of several hundred radios per operator, which is the profile of a fixed wireless access network rather than an enterprise building system. Pheonix Research estimates in-building private cellular at about 1.4 per cent of installed CBRS radios and 1.5 per cent of this market.

The administrative layer below CBRS has also contracted. Four companies were certified to operate CBRS spectrum access systems in January 2020; CommScope stopped operating its system in April 2023, and Google stopped accepting new CBRS customers in June 2026 ahead of a June 2027 shutdown. The Federal Communications Commission said in March 2026 that six of the eight administrators it has approved still operate, against five listed as active by vendor censuses.

The exit that re-rated the asset

Crown Castle completed the sale of its fibre solutions business to Zayo and its small-cell business to Arium Networks, an EQT fund, for USD 8.5 billion on 1 May 2026, receiving USD 8.4 billion net and committing to repay more than USD 7.0 billion of debt. The report treats that transaction as the clearest available signal on neutral-host economics: the incumbent with the lowest cost of capital in the sector sold the asset.

Method

The forecast is built bottom-up from the US Energy Information Administration’s Commercial Buildings Energy Consumption Survey — 96.4 billion square feet of commercial floorspace across 5.9 million buildings, of which 33.1 billion square feet sits in buildings over 100,000 square feet — multiplied by code applicability, annualised retrofit rates and installed cost per square foot drawn from published integrator ranges and executed public contracts. The United States is scaled to the world at 2.85 times, the ratio implied by the US share of global telecom and enterprise IT capital spending; the report states that multiplier as its largest single source of forecast error.

The full report, Global In-Building Wireless Market Report, Size, Share and Forecast 2026–2033, including the bottom-up building-stock model and four-technology segmentation, is available from Pheonix Research.

About Pheonix Research

Pheonix Research publishes graph-verified market intelligence rather than static reports. Every market it covers is modelled as a linked structure of industries, segments, companies and reports, so that a figure can be traced to the value-chain position and the regulatory pressure that produce it. Coverage spans market sizing, value-chain breakdown, competitive landscape, segment-level demand and supply, and forward signals, delivered as published market research reports, as custom research scoped to a specific decision, and through the role-based Pheonix VALUE platform.

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