Google DeepMind’s PlanAssist Cuts Planning Assessment Time by 58%
PlanAssist cut householder planning assessment time by up to 58% in early pilots and will expand to 12 more English councils ahead of a nationwide 2027 rollout.
Summary
Google DeepMind said on October 31, 2026 that PlanAssist, its Gemini-powered planning tool, will expand to 12 additional English local planning authorities after early pilots since June in Barnet, Camden and Dorset cut officers’ average householder assessment time by up to 58%. More than 70% of its reports were approved without edits. Developed with the UK government, Google Cloud and Faculty, PlanAssist validates documents and architectural drawings, checks heritage constraints including tree preservation orders, local and national policies, previous issues and residents’ objections, then drafts fully cited, editable recommendations. Qualified planning officers retain final authority.
Routine householder applications, including loft conversions, conservatories and extensions, account for up to 70% of officer workloads and can leave families waiting months. A 12-month beta using live applications will add the councils in three cohorts, bringing participation to 15 metropolitan and rural authorities. Subject to successful testing, PlanAssist will become available to every English council in 2027, potentially reducing backlogs that impede the UK government’s target of 1.5 million new homes by 2029.
Positives
- PlanAssist reduced average officer time on householder assessments by up to 58% in pilots across Barnet, Camden and Dorset.
- More than 70% of PlanAssist-generated reports were approved by planning officers without edits.
- Twelve additional councils will join in three cohorts, expanding participation to 15 metropolitan and rural authorities.
- Qualified planning officers will review every assessment and retain final control over application decisions.
- A successful beta could make PlanAssist available to every council in England during 2027.
Risks & concerns
- Routine householder applications consume up to 70% of planning officers’ workloads despite often being straightforward to approve.
- Planning delays can leave families waiting months for loft conversions, conservatories or extensions.
- Early results come from only Barnet, Camden and Dorset, with wider performance still to be tested on live applications.
- Nationwide availability in 2027 remains conditional on a successful 12-month beta.
- Planning bottlenecks threaten progress toward the government’s target of 1.5 million new homes by 2029.