ADT Monitoring Cost: What ADT Publishes and What It Does Not (August 2026)

The numbers ADT actually publishes

ADT sells two ways, and the published starting prices differ by route:

Those are starting-at figures, not a price list. ADT's monitoring plans page names three Pro Install tiers, Secure Monitoring (systems without smart home devices or cameras), Smart Monitoring (with smart home devices, no cameras), and Complete Monitoring (with cameras, including 30 days of stored video clips with Nest Aware), but publishes no per-tier prices. To get a real number for your home you go through ADT's quote process.

Two published footnotes matter for total cost. First, equipment is extra on top of monitoring. Second, ADT's own promotional terms describe Pro Install offers as requiring a 36-month monitoring contract (with early termination fees), while Self Setup requires only a one-month minimum. ADT's promo fine print in August 2026 references pro-install contract monitoring starting at $56.99/mo under one current equipment-discount offer, which is a useful signal that real-world Pro Install quotes can land meaningfully above the advertised floor.

What you get for ADT's monitoring fee

ADT's pitch for the premium is the monitoring network itself: six company-operated, US-based monitoring centers, which ADT describes as the largest company-operated network in the industry, with text-based alarm confirmation (Alarm Messenger) that ADT says has prevented over 10 million false dispatches per its monitoring data. Complete Monitoring adds video verification through Google Nest cameras, and ADT states verified alarms are sent to emergency services for a faster response versus unverified alarms.

The tier structure follows your hardware. Secure covers intrusion detection and the MySafety app service. Smart adds smart home automation control. Complete adds live video monitoring, 30 days of Nest Aware clip storage, and Trusted Neighbor (temporary secure access for neighbors or helpers, which requires the Complete plan and compatible devices).

How this compares: ADT's published Self Setup floor ($24.99/mo) is in the same band as DIY competitors' top tiers, and its Pro Install floor ($45.99 to $49.99/mo) is roughly double the DIY norm before any camera tier. We map the whole market's rates in home security cost per month, and the budget end in the cheapest professional monitoring options.

Because ADT pricing is quote-driven, the only way to know your actual monthly cost is to get quotes. We can fetch real quotes from professional monitoring providers, ADT-style pro-install services included, through a short questionnaire.

Questions to settle before you sign an ADT quote

By ADT's published terms, the contrast that matters is contract length. A 36-month Pro Install commitment at even the $45.99 floor is about $1,656 in monitoring over the term (our arithmetic), before equipment and installation. Early termination fees apply per ADT's offer terms, so the real question for a quote is not just the monthly rate but the exit cost.

Before signing, get in writing: the exact monthly rate for your tier after any promotional period, the contract length and early-termination formula, what happens to the rate at renewal, whether equipment is financed inside the monthly payment, and any installation fee. None of these are published on ADT's site, which is itself worth knowing: the advertised numbers are floors, not typical bills.

If a no-contract structure matters more to you than pro installation, the DIY providers we cover in is professional monitoring worth it all publish flat month-to-month rates. ADT's own Self Setup line, at a published $24.99/month start with a one-month minimum, is its answer to that market.