Gateway 3, and the records that decide when people move in

A building can be structurally complete, snagged, cleaned and ready, and still be empty. The lifts work. The alarm panel is commissioned. The keys are in a drawer.

For a higher-risk building, none of that decides when people move in. The completion certificate does.

The last gate

Gateway 3 is the final of the three holding points introduced by the Building Safety Act 2022. Gateway 1 sits at planning, Gateway 2 before construction starts, and Gateway 3 at the end. For a new residential higher-risk building, occupation cannot lawfully begin until the Building Safety Regulator has issued a completion certificate and the building is registered.

The Regulator has a statutory eight weeks to decide a Gateway 3 application.

What it is deciding on is not really the building. It is the record of the building. The application carries as-built drawings, the fire and structural safety documentation, the golden thread information, a declaration confirming the parties who will run the building have actually received that information, and evidence of change control showing that anything altered after Gateway 2 was properly assessed.

That last item is where a lot of the difficulty sits. Every construction project changes between design approval and handover. Gateway 3 asks you to show that each change was considered, approved and recorded at the time, not reconstructed afterwards from memory and email.

What the figures show

In February 2026 the law firm Irwin Mitchell published the results of a freedom of information request to the Regulator, using data accurate to 21 January 2026. It found 44 Gateway 3 schemes still undecided more than three months after submission, with the longest case waiting 550 days for a decision. The coverage that followed put the number of completed units standing unoccupied at around 5,600.

The Regulator disputed that framing. It said it was "not correct" to attribute nearly 5,600 empty homes to Gateway 3 hold-ups, pointing out that no new-build higher-risk building that has been through the Gateway 2 process has yet reached a Gateway 3 application. The new-build cases arriving at Gateway 3 so far are transitional legacy schemes that started under the previous regime.

Both things can be true. The wait is real and long in individual cases, and the system has not yet processed a single building through the full sequence it was designed around. The volume is still ahead of us. The Regulator's own strategic plan for 2026 to 2027, published on 31 March 2026, names Gateway 3 approvals as a priority area and sets a target of responding to Gateway 2 applications for non-complex buildings within 18 weeks or less by the end of March 2027.

Why this is a records problem, not a building problem

Nobody is failing Gateway 3 because the concrete is wrong. The delays cluster around evidence.

An application goes back for more information when the as-built drawings do not match what was approved and there is no change record to explain the difference. When the fire strategy references a product that was substituted on site by a subcontractor who told somebody verbally. When the golden thread exists as a shared folder of PDFs rather than as structured information anyone can query. When the declaration says the accountable person has received the information, and the accountable person is a management company that has not been appointed yet.

None of these are construction failures. They are failures to write things down while they were happening.

The part that lands on the manager

If you manage buildings rather than build them, it is tempting to file this under somebody else's problem. It is not, for two reasons.

The first is that you inherit the output. Whatever survives Gateway 3 is the information you will be running the building on for the next thirty years. A thin submission that scraped through is a thin handover pack, and you are the one who will be asked for a fire door schedule that nobody ever produced.

The second is that the declaration names you. Gateway 3 requires confirmation that the golden thread has been handed to the people who will hold it in occupation. If that is your organisation, you are being asked to say you have it. Signing that on a folder you have not opened is a decision, and it is the wrong one.

What is worth doing

Ask for the golden thread before completion, not at handover. The moment to find a gap is while the contractor is still on site and can close it. Six weeks after practical completion, the people who knew the answer have moved to another job.

Read the change control record, not just the drawings. The differences between the Gateway 2 design and the finished building are the most useful pages in the pack. They tell you what the building actually is.

Check the product-level detail. Categories are not records. Fire doors, cladding, insulation and sealant should arrive with manufacturer, specification, classification and location. If they arrive as a category, you have a survey in your future.

Confirm who signs the declaration and when they were appointed. If the accountable person or the principal accountable person is a management company that does not yet exist, the handover has a hole in it that nobody has looked at.

Treat the submission as a template for the next thirty years. The structure that satisfies Gateway 3 is close to the structure the safety case report needs. Building it once, properly, saves rebuilding it under time pressure later.

Where this sits in SAMRISK

Gateway 3 is a handover of information, and the difficulty is that most handovers arrive as a pile of files rather than as a structure.

As-built drawings and the orientation of the building belong in building plans, so a floor and an elevation are places you can attach things to rather than pages you have to search. The declarations of performance, test certificates, fire classifications and commissioning records go into documents, attached to the building and to the thing they describe. Product specifications sit in materials, so what the building is made of stays a queryable field rather than a line in a PDF.

Installed equipment with a service life and an inspection interval becomes an asset in items, with the servicing running as recurring work in maintenance. Changes made during works, and the sign-offs behind them, sit alongside the job in contractors and permits. The fire strategy, the door schedule and the monthly regime land in fire safety.

Open items from the handover become tasks with an owner and a date rather than a snagging list nobody owns. The periodic check that the record still matches the building runs as an audit. For a higher-risk building, all of it feeds the safety case, which is the document the Regulator will come back to.

The point

Gateway 3 is the first time in British building regulation that a finished building has been held closed until its paperwork is right.

That is uncomfortable, and the waiting times show it. It is also the clearest signal yet of where this is going. The building is no longer the deliverable on its own. The building and the record of it are the deliverable, and one without the other does not open.

Sources: Building Safety Act 2022 and the Higher-Risk Buildings (Management of Safety Risks etc.) Regulations, for the Gateway 3 completion certificate and registration requirements; Irwin Mitchell, freedom of information release published February 2026, data accurate to 21 January 2026, for 44 schemes undecided beyond three months and a longest wait of 550 days; the Building Safety Regulator's response to that coverage, February 2026; Building Safety Regulator, Strategic plan 2026 to 2027, published 31 March 2026, GOV.UK; Building Safety Regulator guidance on applying for a completion certificate.