A ‘green’ office building has been fully let, before fitting out has been completed. The £5.4m Kestrel House (pictured above) at Howbery Park, near Wallingford, has secured two new tenants to occupy 40,000 sq ft of its office space.

Owners of the Park, HR Wallingford, a civil engineering and environmental hydraulics firm, will occupy 33,000 sq ft on the ground and first floors at £20 per sq ft on a 25-year lease.

The remaining 7,000 sq ft of prime office space has been let to MWH Soft, a software supplier to the water industry, on a on a five-year lease.

Kestrel House mirrors the award-winning Red Kite House, occupied by the Environment Agency.

Both were designed by architects Scott Brownrigg. Fit out for the new building is due to complete mid-October.

On completion of Kestrel House, Howbery Park will be one of the few business parks in the UK to house two buildings with an ‘excellent’ rating for the environmental standard BREEAM.

John Ormston of Howbery Park Estates said: “Howbery Park is faring well in comparison to competing business parks and premises located further down the River Thames.”

Operational for more than 20 years, Howbery Park currently has almost 20 tenants specialising in life sciences, technology and the environment occupying 250,000 sq ft with more than 600 employees on site.

It has been granted consent for 140,500 sq ft of open B1 office accommodation and research, which includes detailed consent for 35,683 sq ft.

When complete, the park will have a total developed area of 360,000 sq ft of space. HR Wallingford is currently seeking pre-lets for five office buildings.