Blog / Power BI

Power BI Desktop, June 2026: what actually matters for housing reporting

Microsoft's June release (version 2.155.756.0) leans hard into AI-assisted authoring and finally makes DAX user-defined functions production-ready. Here is the housing-data read on what to switch on, and what can wait.

Every month brings a Power BI update, and most of it is noise if your job is housing reporting. The June 2026 release is different in two ways that matter: the authoring surface is becoming something an AI agent can drive, and a feature we have wanted for years is finally supported in production.

Desktop Bridge: the authoring surface opens up

The headline is the new Power BI Desktop Bridge, a capability that lets agents and external tools connect directly to a running Power BI Desktop session. In practice that means a tool can read a report, make a change, and verify the result in a continuous loop rather than a human clicking through every step.

For a housing team, the obvious use is repetition. If you maintain forty near-identical operational reports across repairs, voids and income, a driven session can template and regenerate them far faster than hand-editing each one. The catch is the same as the promise: a tool that can rewrite your reports is a tool you want governed before it touches anything live.

An agent that can open your model, rename a measure and check the result is genuinely powerful. It is also exactly the surface you want governed before you switch it on.

DAX user-defined functions are production-ready

The quieter but more immediately useful change: DAX user-defined functions have moved out of preview and are now production-ready. You can define a piece of logic once and reuse it everywhere, instead of pasting the same SWITCH into a dozen measures.

Arrears banding is the textbook housing example. Define the bands once:

DAX user-defined function
FUNCTION ArrearsBand = LAMBDA(balance) =>
    SWITCH(
        TRUE(),
        balance <= 0,     "In credit",
        balance < 250,    "Low",
        balance < 1000,   "Medium",
                          "High"
    )

Now the same bands apply identically in every measure and every report that calls the function. When the policy threshold moves, you change it in one place and the whole model follows. For regulated reporting, that single source for a definition is worth more than it sounds.

Copilot moves into model view

Copilot can now work in model view, analysing the structure of a semantic model and applying schema changes such as renames, relationships and new DAX measures from a prompt. On a fresh NEC Housing import, where you are staring at hundreds of cryptically named columns, an assistant that proposes relationships and friendlier names is a real time-saver.

It does not replace knowing the schema. A suggested join between two plausible-looking keys can be confidently wrong, and only someone who knows how repairs actually flow through the tables will catch it. Treat it as a fast first draft, not an answer.

Smaller wins worth a look

The BaseData take, what we'd switch on first
1 DAX user-defined functions, today. Low risk, and it cleans up duplicated logic you are already maintaining by hand.
2 PBIR, if you version reports. Worth adopting the moment your reports live in Git alongside the rest of the work.
3 Desktop Bridge and model-view Copilot, after a governance conversation. Powerful, but not something to enable on a Friday afternoon without access controls agreed.

None of this changes the fundamentals. Good housing reporting still comes from understanding the schema underneath it. What June gives you is a faster, more reusable way to build on top of that understanding, as long as you keep a hand on the governance.

Power BIDAXGovernanceNEC Housing
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