David Wilson Homes wants to build 270 homes on Parcel B3 at Dallington Grange, 27 of them affordable. Comments close 8 October. Why the share is 10%, not 35%.

David Wilson Homes has applied to build 270 more homes at Dallington Grange, the new neighbourhood on Northampton’s north west edge. Only 27 of them would be affordable, one in ten. The public can comment until Thursday 8 October, and the council’s target date for a decision is 16 November. (planning register, 2026/3580/MAR)

The homes would go on Parcel B3, part of Phase 2C. The developer’s planning statement puts it south west of the planned primary school and directly south of the employment land and neighbourhood centre. The application is marked for decision by officers, not by a committee.

Why one in ten, not 35%

The adopted Joint Core Strategy asks for 35% affordable housing on sites of 15 homes or more. Dallington Grange was never going to meet that. David Wilson Homes’ planning statement explains why:

  • When outline permission was granted, affordable housing was agreed at 10% after a viability assessment.
  • The lower figure was accepted because the development has to deliver part of the North-West Relief Road, which “takes up a large part of the money available for developer contributions”.
  • Part of that 10% is a single block of 100 affordable homes on council-owned land in the south east of the site.
  • So across the rest of the site, only 6.9% of homes need to be affordable.

Parcel B3 offers 27 affordable homes, which is 10% of the parcel. The statement says this complies with the Section 106 agreement. (planning statement, 11 August 2026)

The relief road opened on 17 December 2025, linking the A428 Harlestone Road with the A5199 Welford Road. See our Northampton roadworks and travel page for how it fits the rest of the network.

For comparison, the 237 homes approved at Malabar in Daventry last week include 63 affordable homes, 27% of that phase. See our report on that decision.

What would be built

The accommodation schedule sets out the homes:

Homes proposed on Parcel B3, Dallington Grange, by size
SizeFor saleAffordableTotal
1 bedroom01313
2 bedrooms85792
3 bedrooms1097116
4 bedrooms49049
Total24327270

The affordable homes would be 70% affordable rent and 30% shared ownership. There is no social rent on this parcel. Nearly half of them, 13 of 27, are one-bedroom homes. (accommodation schedule)

Other details from the application:

  • Density: 46.2 homes per hectare, on 5.85 hectares of net development land
  • Materials: mostly buff brick and grey tiled roofs, with smooth render and grey weatherboard
  • Parking: on plot for every home, plus unallocated visitor spaces
  • Electric car charging: a charge point for every home
  • Bus stops: none proposed in this parcel
  • Noise: homes closest to the road on the west side would need extra glazing, ventilation and facade treatment, and taller garden fences

How much of Dallington Grange is now in the system

Bar chart of reserved matters applications at Dallington Grange: approved Phase 1A 329 homes, Phase 1B part 273, Phase 2B part 295 and Parcel B2 169; pending Phase 2C 123, Parcel D2 106, Phase 3B part 305, and Parcel B3 270, this application
Chart by The Northampton Wire. Source: West Northamptonshire Council planning register and the developer's planning statement.
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The outline permission, N/2014/1429, allows up to 3,000 homes. It also includes employment land, a local centre, two primary schools, a secondary school and the redevelopment of Grange Farm as a cafe, restaurant, pub or hotel.

On the council’s register on 27 September:

  • 1,066 homes have detailed approval, in four decisions. The latest, 169 homes on Parcel B2, was approved on 19 August.
  • 804 more are waiting for a decision, including Parcel B3.

That is 1,870 of the 3,000 approved or applied for in detail.

How to comment

Comments go through the council’s planning register, under reference 2026/3580/MAR. The closing date is 8 October 2026. The council says it will still consider comments that arrive later, as long as no decision has been made.

A reserved matters application only decides layout, appearance, scale and landscaping. The number of homes allowed and the 10% affordable share were fixed when outline permission was granted, so comments on those are unlikely to change this decision. Comments on the layout, parking, noise or the look of the homes are the ones officers can act on.

What it means for you

  • If you live in Dallington, Kings Heath or New Duston, another 270 homes are proposed for the estate on your doorstep. You have until 8 October to comment on the design.
  • If you are waiting for affordable housing in Northampton, this parcel would add 27 homes, and none at social rent.
  • If you use the relief road, the developer’s own statement links the low affordable share here to the cost of delivering part of that road.

For every planning decision in the district, see Northampton planning news.

Sources