Construction Waste

We will increase recycling rates on construction sites from the existing 89% level through improved planning, purchasing and management.

A diversion rate of 92.9% was achieved across the Group.

We will aim to introduce a maximum of 3 waste management contractors across all divisions to improve waste management data and investigate further diversion rate improvements.

A shortlist of suitable contractors has been drawn up. This target will be rolled-over into 2015-16.

We will aim to increase the proportion of waste diverted from landfill on construction sites from the existing 92.9% level

Diversion rates increased to 95.9% for the 15-16 year.

We will aim to introduce a maximum of 3 waste management contractors across all divisions to improve waste management data and diversion rates, with 100% compliance achieved by 2018

Work is continuing on this project and the target has been rolled over into 2016/17.

We will continue work to introduce a maximum number of waste management contractors across all divisions, aiming for 100% compliance by 2018 and work to identify key waste reduction opportunities.

We will maintain the proportion of waste diverted from landfill on construction sites at 95% or above.


The materials we use to build our homes are resources that require careful management. Our aim is to use such resources as efficiently as possible, ensuring that we limit our impact on the environment by minimising waste, and so deliver cost and efficiency savings which benefit our wider business, customers and stakeholders.

Waste Strategy

Our primary objective on every development is to prevent waste in the first instance through a comprehensive waste management strategy. This begins with the planning and design process, filtering down through the management of the construction process and across the lifetime of the development.

We are constantly evolving our house types and construction processes, seeking new systems and products to help improve the efficiency of the construction process. We have again given focus to improving the proportion of our waste which we divert from landfill across our divisions and we have successfully improved our overall diversion rates to 95.9% this year (2014/15 – 92.9%).

Percentange of waste diverted from landfill

Waste Performance

The figures in the table below show the breakdown of waste by category for the past 5 financial years. Overall waste has increased by 11%, broadly in line with 12.5% increase the number of homes completed this year and our year-on-year waste diversion rate continues to improve, rising to 95.9% in 2015/16, while waste per home completed was in line with last year.


Waste Category11-12
Timber (t) 3,997 4,153 5,222 5,126 6,923
Aggregates (t) 12,261 9,258 8,624 13,785 16,432
Plasterboard (t) 2,468 2,373 2,596 3,162 3,562
Mixed metals (t) 242 174 286 304 477
Mixed waste (t) 27,868 27,206 33,303 44,353 46,830
Electrical (t) 1 49 108 3 1 1
Hazardous (t) 563 186 123 9 37
Total (t) 47,448 43,458 50,157 66,740 74,262
Diverted (t) 39,066 39,181 44,784 62,001 71,226
Diverted (%) 82.3% 90.2% 89.3% 92.9% 95.9%
Homes Completed 5,226 5,652 6,851 7,752 8,721
Waste (t) per Completed Home 9.08 7.69 7.32 8.61 8.52

¹ The significant drop in electrical waste was due to electrical contractors retaining their own waste for recycling off-site.

Tonnes of waste per home sold 

Case Study Case Study

River Transport

The River Gardens site in Old Isleworth, London, is situated right on the banks of the River Thames. During enabling works a large amount of non-hazardous industrial waste needed to be cleared and removed from the site before construction could begin.

Our Thames Gateway division utilised the adjacent River Thames and moved the waste away from the site to the disposal location by river barge. Each barge was capable of transporting between 1,000 and 2,000 tonnes of waste and over the duration of the works over 14,000 tonnes of waste was transported on 15 barge loads. By utilising the river we were able to keep over 800 lorry journeys off the congested London roads, with the added benefit of reduced carbon and pollution impact