Whitehall has stepped into a Hertfordshire planning row. In a letter sent on 18 March 2026, Housing Minister Matthew Pennycook told Three Rivers District Council that the Secretary of State has directed changes to its emerging Local Plan and set firm deadlines to get it submitted this year. (assets.publishing.service.gov.uk)

Ministers say the Regulation 19 draft, signed off for consultation at a Full Council meeting on 27 January 2026, still falls short. The department’s view is that the draft fails to allocate all appropriate housing sites and is “highly likely to be found unsound” at examination. (assets.publishing.service.gov.uk)

The intervention leans on a stark evidence base. Three Rivers is working off a Local Plan adopted in October 2011-“one of the oldest in the country”-and its 2023 Housing Delivery Test score is just 30%, the fifth lowest in England, which puts the authority under the presumption in favour of sustainable development. Affordability is stretched too, with median prices at 12.3 times median earnings against an England average of 7.7. (assets.publishing.service.gov.uk)

The Secretary of State’s direction requires the council to modify the draft to include, as a minimum, sites at Kings Langley Estate (south), Rousebarn Lane, East Green Street, south of Little Oxhey Lane, land east of Oxhey Lane and land east of Watford Road, with Batchworth Golf Course to be added if lease issues are resolved. Officials say these changes would lift supply to roughly 85% of identified need. (assets.publishing.service.gov.uk)

Process now matters. The council must run a revised Regulation 19 consultation by 31 July 2026 for at least six weeks, submit the plan by 30 November 2026, and report monthly on progress. It is directed not to withdraw the plan, to carry it through examination, then publish the Inspector’s recommendations and consider adoption. A revised Local Development Scheme must be published by 30 June 2026 to reflect the milestones. Ministers have also asked for any “exceptional circumstances” case against intervention by 25 March 2026 and warned they will “consider taking further action” if directions are ignored. (assets.publishing.service.gov.uk)

The legal footing is explicit: section 21 of the Planning and Compulsory Purchase Act 2004 for unsatisfactory plans, section 27 for default intervention where a council is failing to do what is necessary, and section 15(4) to require changes to the Local Development Scheme. A previous notice under section 21A paused any adoption steps while ministers weighed a full direction. (assets.publishing.service.gov.uk)

Signed by Matthew Pennycook but issued on behalf of the Secretary of State, the move signals a readiness to intervene where plans underperform. Steve Reed has held the housing and communities brief since 5 September 2025, so the direction lands squarely within his remit to speed up plan‑making and housebuilding. (gov.uk)

For councils across the North, the message is blunt. If a Regulation 19 draft ducks viable sites and underdelivers on need, expect Whitehall to step in, insist on modifications and set the dates. The letter even points to Green Belt changes where justified by national policy-an argument many northern leaders know they may have to confront to get sound plans over the line. (assets.publishing.service.gov.uk)

For housing associations, SME builders and planning teams in our patch, a firmer timetable can de‑risk decisions and bring forward stalled pipelines. A hard July–November window in Hertfordshire won’t build homes in Halifax or Hull, but it shows central government is willing to enforce progress. The next milestone is 25 March, when Three Rivers must either argue exceptional circumstances or press on under direction. (assets.publishing.service.gov.uk)