New Road

Nine distinct family homes nestled within protected woodlands in Digswell Village, outside Welwyn Garden City.

Project Address

New Road, AL6

Location

Digswell Village, Hertfordshire

Size

9 homes (13,200sqft)

Status

Planning Approved - RIBA Stage 3

Client

ACRE (Planning)/Sawyer Family Homes Ltd.

Sitting amongst a green belt, the plot is located within existing mature woodland that forms a natural boundary to the neighbouring properties and the main road. The new single villa is configured to sit within the undulating topography and embed sensitively within the protected habitat. The low-carbon proposal features nine generously proportioned family homes that widen the offer available locally and support a community of all ages.

Inspired by the working buildings of the surrounding historic farm estates, the material palette and suite of details were developed to celebrate and reinterpret the use of traditional materials, form, and detailing.

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The timber frame and timber cladding will be constructed and clad from sustainable sources, dramatically reducing its embodied carbon. The material selection, as far as possible, is environmentally friendly with responsibly specified and robust choices that; make reference to their industrial heritage, are contextually suitable, and offer potential for future repair and reuse.

The pitched asymmetric roofs tier down to respond to the undulating site and culminate with a brick collar, which traditionally would have been the chimney stack but has been reinterpreted as a contemporary roof light. The feature provides an abundance of natural daylight and ventilation to circulation cores and top floor apartments. Internally, the upper floors utilise the roof geometry to create unique and distinct double-height spaces whilst lower floors are sunken to further embed within the natural site topography.

The proposal adopts a fabric-first approach and will be super-insulated and airtight to provide high thermal performance. Following passive principles – the form, orientation, and fenestration are carefully considered minimising thermal bridging, optimise solar gain and mitigate overheating in line with the new Part O regulations. The villa has been designed to incorporate zero-carbon technologies from the outset with on-site renewable energy to deliver sustainable homes that are affordable to live in. In addition, the layout of the internals and structural components of the homes will allow for longevity, flexibility, and future adaptability.

Working collaboratively with Cornus Landscape Planning and Design to preserve the landscape – the approved proposal retains all large existing trees and protects shrubbery and wildflower areas that promote healthy ecological habitats. The proposal increases biodiversity by 17% through the introduction of additional landscaped plots for wellbeing, planting, allotments, and vegetation. The uplift supports a rich biodiverse environment that will deliver high quality and step-free communal amenity space for all residents to enjoy, connect, and play within.

Windows and doors have stained timber frames which are set back within deep reveals to punctuate the elevations. The windows are positioned to offer framed views out to the mature woodland, creating a sanctuary space. Projecting balconies provide depth to key elevations and follow the honest and resilient palette, being made from galvanised steel.

A stack bonded soldier course of buff brick emerges from the ground that negotiates the site topography to form a horizontal datum and plinth. The buff brick complements the natural self-finish of the timber boarding used to clad the building above the plinth and that extends up into the high pitch asymmetric roofs. The use of timber cladding references the traditional construction of rural barns but instead of horizontal boarding it is rotated 90 degrees to run vertically to reflect the surrounding mature woodlands.

Left: First Floor Plan, Above: Location Plan

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ALASDAIR BROWNLOW

SENIOR ARCHITECT