Design- Build is a construction method that provides owners with a single point of contact for both the design and construction phases of a project. Only one entity holds single-source responsibility and contractual risk for every aspect of a build-from estimation, pre-construction assessments to architecture, schematics, engineering, subcontracting, construction and post-construction. The design-builder manages all contracts with companies, such as subcontractors, equipment vendors and material providers. Successful design-build delivery requires experienced professionals, exceptional communication, full team integration and commitment to working collaboratively. 


Lean Construction is the term used to define the application of lean thinking principles to construction environment. To the business environment, the central theme of lean thinking is a close scrutiny aimed at identifying value and studying existing work processes to remove the waste that prevents value from being effectively delivered. A construction company must understand the real value it delivers to its customers and do so in the most effective way making best use of resources and its people. Adopting lean thinking results in a highly flexible, profitable company, but the process to achieve it requires radical change and takes a number of years. 


Sustainable Construction aims to meet present day needs for housing, working environments and infrastructure without compromising the ability of future generations to meet their own needs in times to come. It incorporates elements of economic efficiency, environmental performance and social responsibility - and contributes to the greatest extent when architectural quality, technical innovation and transferability are included. Economic efficiency - projects must prove to be economically feasible with regard to channeling and managing financial flows, promoting an economy by means and be compatible with demands across the construction lifespan. Environmental performance - projects must exhibit a sensible use and management of natural resources throughout the entire life cuce. Social responsibility - projects must adhere to the highest ethical standards and promote social inclusion at all stages of construction, from planning and building to use and servicing; to ensure an enduring positive impact on communities.


Maintenance a is the ongoing upkeep of buildings, equipment and grounds required to keep a facility in a condition adequate to support its functions. It consists of preservation, but not the improvement of buildings and grounds. Maintenance is generally on a routine or recurring basis, and may be to bring equipment back to a fully functional state. Notwithstanding, if a replacement or the purpose of upgrading a system, it is not considered maintenance.