Marsworth is a peaceful canal side village in Buckinghamshire. The development is located in place of the village’s triangular wharf, which lies at the junction of the Grand Union Canal to the east and the Aylesbury Arm to the south west. To the south of the site, the intersection of these two canals create a large basin of water that provides a strong visual amenity in this stunning environment.
The site is within a Conservation Area. The existing buildings consisted of a number of industrial units (disused) and a stone canal warehouse used as British Waterways local offices. The warehouse is known as the Carpenter’s Workshop, and although not Listed was deemed by English Heritage to play an important role in the history of the local canalscape; it was therefore retained and converted as part of the development.
Water frontage is a significant feature of the site, and maximising the benefits of this is fundamental to the design strategy.
The site layout is centred on the Carpenter’s Workshop with the desire to create an open wharf-like space around this building; three similar proportioned buildings are located parallel and close to each of the boundaries.
These three buildings are labelled A, B, and C. The existing Carpenters Workshop, building D, is located in a prime spot at the southern end of the site.
All dwellings take full advantage of the canal context with views over the water. The building arrangement creates a shared courtyard which opens to the south, reminiscent of traditional local farmsteads. All dwellings share this space and are entered from it. The open space around the workshop provides a tremendous waterside amenity for residents and visitors alike whilst also allowing views to the water from landward building B.
The basic form and scale of each building is traditional, in so far as they feature pitched roofs and load-bearing walls in order to reflect both the local vernacular and the existing Carpenter’s Workshop. Although all of the proposed blocks share a palette of materials, they are different in form and character, and respond distinctively to their particular location within the site.
A simple palette of materials is proposed which includes white clay brick, black stained larch and zinc roofs. Additional interest is provided by the louvered sliding screens at ground floor and the dormers at first floor. The white brick is a reference to the white painted brickwork used in the locality. The colours also relate to the strong black and white of the British Waterways branding. The standing seam roof material will reinforce the simple clean lined contemporary approach of the design and also responds to the historic light industrial context of the site and the neighbouring locks and cranes.
The design’s main criteria is to create modern buildings which maintain the ‘spirit of the wharf’ and this approach was considered successful by English Heritage and the local planning authority.
The scheme has been completed and delivered in September 2015.
This development has been designed to achieve the now withdrawn Code for Sustainable Homes Level 3 designation. The Code for Sustainable Homes was an environmental assessment method for rating and certifying the performance of new homes. It was a national standard for use in the design and construction of new homes with a view to encouraging continuous improvement in sustainable home building.
The Code assesses the scheme’s environmental performance in a two stage process (Design stage and Post-construction) using objective criteria and verification. A Code for Sustainable Home Pre-Assessment Document has been prepared for this scheme, identifying the potential of this project to meet Code Level 3.
Included within the means of achieving Code Level 3, are roof mounted solar collectors for hot water, high levels of thermal insulation, on-site water collection and passive solar control via moveable screens.
Due to the lack of mains gas provision to the site, and to utilise a fuel source that reaches an appropriate balance between energy efficiency, convenience and cost effectiveness, liquid petroleum gas has been chosen as the fuel source for heating, hot water and cooking throughout the development. As a result, 3 No. 1000 litre LPG tanks will be located at the northern most tip of the site, adjacent to Watery Lane. These tanks will be green in colour and screened by thick vegetation to three sides, particularly to Watery Lane.
In addition to the LPG fuel source, it is proposed to provide roof mounted solar collectors on each dwelling to provide a practical and passive method for hot water provision.
The materials have been chosen with reference to the Building Research Establishment (BRE) Green Guide to Specification, with preference given to those achieving the best rating, A. Materials have also been selected to minimise future maintenance.
Elements of the scheme design have been influenced by detailed reference to Aylesbury Vale District
Council’s Refuse and Recycling: Advice Note for Developers, enabling the refuse and recycling storage facilities to be sensitively incorporated into the scheme without compromising the appearance of the proposals. The scheme has also assessed the requirements for vehicle access in terms of layout and roadway width within the site boundary.
An Extended Phase 1 and Phase 2 Ecological survey has been undertaken which identifies the presence of a number of bat species using the site and adjoining canal corridors. Extensive mitigation proposals, including the provision of integral bat boxes within the external wall construction, are included in the development, to safeguard potential roosting and maternity roosting sites. The properties include a number of integral bird nesting boxes, specifically to house sparrows and swifts, which commonly use buildings as nesting sites.
The change of use from B2 industrial to residential use, which includes the creation of gardens and hedgerows, increases the potential of the site to support an enhanced ecological bio-diversity. A large number of native plant species have been included within the planting scheme, to maximise the ecological potential of the site, and to integrate with the wider landscape.