Designing in the North Wessex Downs: Architecture in an AONB

We are based in Marlborough — which means that the North Wessex Downs AONB is not an abstract policy consideration for us but a daily reality. The chalk downlands, the ancient woodland of Savernake Forest, the wide skies of the Vale of Pewsey: these are the landscapes our clients live within, and the landscapes our buildings must respect and respond to.

Designing within an AONB is one of the most demanding disciplines in residential architecture. It is also, in our experience, one of the most rewarding.

What Is an AONB?

Areas of Outstanding Natural Beauty are designated under the Countryside and Rights of Way Act 2000 to conserve and enhance the natural beauty of landscapes that are considered to be of national significance. The North Wessex Downs AONB covers 1,730 square kilometres across Wiltshire, Hampshire, Berkshire, and Oxfordshire — one of the largest in England — and it encompasses Marlborough and much of the surrounding countryside.

Within an AONB, national planning policy applies a strong presumption against development that would harm the landscape's special qualities. Permitted Development rights are more restricted than in ordinary residential areas. Extensions, outbuildings, and alterations that would be straightforward elsewhere require planning permission, and the quality and sensitivity of the design is scrutinised more carefully.

What This Means for Design

Designing for an AONB doesn't mean designing conservatively. It means designing with exceptional attentiveness to context — to the landform, the materials, the relationship between building and sky. The best buildings in these landscapes don't impose themselves; they grow from them.

In the North Wessex Downs, the vernacular traditions offer clear guidance. Sarsen stone — the distinctive grey-brown sandstone found across Wiltshire — is the characteristic building material of the area. Timber boarding, weathered to silver. Clay tile and Cotswold stone slate. These are the materials that have always been used here because they are the materials the land provides: honest, enduring, and beautiful.

Contemporary buildings within the AONB don't need to mimic these traditions to be appropriate. But they do need to be designed with the same material intelligence — choosing finishes that age and weather as naturally as their historic neighbours, and that read quietly in the landscape rather than asserting themselves against it.

Working with the Planning Authority

Wiltshire Council is the planning authority for the Marlborough area, and the Council's officers have deep familiarity with the AONB policies and the design qualities they're looking to protect. Being based in Marlborough, we have an ongoing relationship with the planning team that is genuinely valuable — not because it guarantees approval, but because it ensures that our applications are prepared with a clear understanding of what the authority is looking for.

Pre-application engagement is particularly important in AONB locations. We recommend that all clients with sites within the North Wessex Downs engage with Wiltshire Council through their pre-application advice service before any design work of substance is undertaken. The cost is modest; the value is significant.

Our Work in the Area

Our practice has worked on a number of projects within the North Wessex Downs AONB and the wider Marlborough area — extensions to stone farmhouses in the Vale of Pewsey, garden studios on the edge of Savernake Forest, new build homes on the chalk downland above the town. Each project has its own specific conditions and constraints, but each requires the same fundamental discipline: design that earns its place in this remarkable landscape.

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If you have a project in Marlborough or the surrounding area, we would love to hear from you. Get in touch to arrange an initial conversation at our Marlborough studio.