Hampton House, Malvern.

Hampton House, Malvern.
1. Location

Geographical region: 
West Midlands
Name of council or planning authority : 
Malvern Hills District Council
Name of consultant: 
ACD Ecology
Name of architect: 
Banner Homes
2. Type and description of building

Type and use of building (domestic house, commercial, industrial, etc.): 
Derelict former house, more recently used by Malvern College Preparatory School.
Approximate age (in years) or period of the building: 
Materials of the building (stone, brick, timber, etc.): 
Malvern stone, slate.
Predominant landscape type around building (e.g. garden, urban, woodland, open farm fields): 
The site lies on the escarpment of the Malvern Hills, on the outskirts of Great Malvern. The site is bordered by the A449 Wells Road, Abbey Road and College Road. The Malvern Hills rise sharply to the west of the site.
3. Details of proposed work and associated impacts

Type of impact to bats or roost: 
Roost loss
Date Timing of building/impact works (e.g. late spring, early summer) : 
Description of building works or impact: 
Hampton House has planning permission to convert the house into 7 apartments. This includes the loss of the roof space.
4. Description of roost (before mitigation)

Bat species found on site: 
Lesser horseshoe bat - (R. hipposideros)
Age (estimate of how long the roost has been in use): 
Size (estimate of number of individuals using the roost): 
Use Type of roosts (e.g. hibernation, spring gathering, maternity, nursery, swarming): 
night roost
day roost
Location in building: 
Aspect (direction facing): 
Concentration of droppings in eastern section of roof.
Description of immediate emergence environment in relation to the roost: 
Mature trees and shrubs, detached buildings.
Roost substrate (e.g. brick, stone, wood, roofing felt): 
Evidence of insulation?: 
(If yes), name/brand: 
Height of roost above ground: 
Roof covering: 
Slate tiles
Lighting levels inside roost (lux reading) - Day: 
Dark (lux levels unknown)
5. Description of access (before mitigation)

Size of access: 
30cm by 15cm (rainwater drainage inlet).
Location in building: 
Centre of roof
Height of access points above ground: 
Aspect (direction facing): 
6. Description of mitigation

Type of mitigation and compensation: 
Purpose built roosts (e.g. bat boxes and bat barns)
Objective of mitigation: 
The new building’s primary function is to provide a summer roosting site which is capable of accommodating a small maternity roost in the long term.
Method to achieve objective: 
To build a bespoke bat building for lesser horseshoe bats, to compensate for the loss of the roosting space in the roof space of Hampton House.
How is success of mitigation to be measured: 
EPS Licence monitoring will be conducted in 2014 and 2016. Longer term monitoring will be conducted by ACD Ecology.
40m from the existing roost.
Building size: 5m by 5m. Roof void height: 2.5m.
Concrete block, thermolite block, wooden cladding, slate tiles.
Additional info: 
External wall consists of double skinned cavity wall, made of concrete blockwork. The cavity wall is to provide thermal stability in the building, with most thermal variation in the roof space. The ground floor internal wall is constructed from Thermolite blocks to keep the ground floor cool and buffer external temperatures.
Drawings or plans of the project: 
7. Monitoring Data

Evidence of bat use post mitigation: 
First monitoring to be carried out in 2014.
9. Photos (before and after)

Before – inside of roost: 
Before, Inside of roost
After – outside showing mitigation: 
After, Outside showing roost location - Roost 20/11/2013 - 4:10pm
After – inside showing mitigation: 
Before, Indise of roost - Roost 20/11/2013 - 4:20pm