Adj Grassmere, Horseman Side, Navestock (self-build dwelling in garden)

appeal 6009849·Brentwood·28 September 2026allowed
Decision
allowed, 28 September 2026
Decided by
Planning Inspector: Billy Pattison
Authority
Brentwood (East of England)
Appeal reference
6009849
Application reference
25/01260/OUT
Procedure
written representations
Development
Outline (access, layout and scale) for one self-build family dwelling in the garden of a rural house
Homes
1
Site context
green belt, PDL, rural lane, open countryside
Green Belt
Yes (grey belt not argued)
Housing land supply
4.53 years
Framework applied
August 2026 NPPF
Determinative policies
GB7(1)(e), S5(5), S5(2), HO7, L2
Development plan policies
Brentwood Local Plan 2022 MG02, MG03, BE07, BE09, BE14
Main issues
inappropriate development in the Green Belt; suitability of location and accessibility

Summary

A single dwelling in the garden of a rural house at Navestock, in the Green Belt, was allowed. Because the garden is outside a built-up area it counts as previously developed land, and the moderate harm to openness was below GB7(1)(e)'s "substantial" threshold, so the scheme was not inappropriate. The inspector found occupiers would be largely car-reliant on unlit lanes, but gave the local settlement-hierarchy conflict limited weight because of the supply shortfall, did not treat it as a TR3 conflict, and allowed the appeal under S5(5).

Issues and findings

Planning balance

S5(5) via S5(2): "the proposal does not conflict with any decision-making policies that indicate planning permission should be refused" (DL ¶38). Substantial weight to effective use of PDL (DL ¶38) and to one home (DL ¶39). "I do not find that the benefits of the proposal would be substantially outweighed by any adverse effects" (DL ¶40). TR3 is not named, and the car-reliance finding enters the balance only as a local-plan conflict of limited weight.

What made the difference

Treating the rural garden as PDL opened GB7(1)(e), which carries no location limb, and the screening by neighbouring houses kept openness harm moderate. The accessibility failure then counted only through local policies whose weight was cut for the supply shortfall. Had the inspector tested TR3 directly, or kept the settlement-hierarchy policies at full weight, the balance could have gone the other way.

Transferable points

Policy findings

Policy codes are those of the National Planning Policy Framework (August 2026) unless a development plan is named.

PolicyFindingWeightNote
AnnexB:PDLpassgarden of Grassmere, no internal boundary and only accessed via the house, so within the curtilage; small rural cluster is not a built-up area, so the garden is PDL (Dartford [2017] EWCA Civ 141) (DL 9-11)
GB7(1)(e)passtwo-storey house slots into roadside ribbon between dwellings and Wattons Works; hedge retained; moderate, not substantial, openness harm (DL 12-16)
GB7(1)(g)not-engagednot considered as (e) is met (DL 17)
TR3harmmapped (TR3 not named) - unlit narrow lanes, no pavements or cycle lanes for much of the route, poor public transport; occupiers largely car-reliant; appellants' local family and business ties discounted as personal (DL 18-23)
S5(5)passS5 directs to GB6-GB8, then S5(2); no "should be refused" policy breached; benefits not substantially outweighed (DL 36-40)
L2benefitsubstantialsubstantial weight to effective use of PDL (DL 38); L2/L3 given only limited weight at DL 25 ("Given the scale of the proposal")
HO7benefitsubstantialone dwelling given substantial weight against a 4.53-year supply (DL 39)
LP MG03/BE09/BE14 (local)conflictlimitedsettlement hierarchy and sustainable travel conflict given limited weight because the supply position shows "the settlement strategy is not working effectively" (2024-style, no Annex A(2) test) (DL 37)
DM6failno obligation securing self-build; occupation-by-builder condition would fail the tests, so treated as market housing (DL 28)

Key facts

Sources

This note is one of the decisions behind the NPPF 2026 Navigator, which shows how each Framework test has been applied across all the decisions in the database. Also available as Markdown.