*Perspective Chapter: Imperative of Nigerian Demographics for Green Housing DOI: http://dx.doi.org/10.5772/intechopen.108794*

content materials, modern resource efficient engineered materials, and resource efficient composite type structural systems. Maximizes the use of re-usable, renewable, sustainably managed, bio-based materials [46]. One major factor identified for high cost of building construction in Nigeria is massive importation of building materials used. Apart from the fact that some of these materials might not be suitable for the local climatic conditions, many of these contain CO2 and are very costly. Green building development seeks to reduce embodied energy and CO2. Nigerian future housing should be developed with consideration for more environmental friendly building materials, less CO2 and environmentally resilient.

Nigerian construction sector contributes greatly to waste generation and indiscriminate waste disposal. The building process is subject to rework with high volume of waste generated and Nigeria is yet to embrace deconstruction as a practice. Construction waste management is at infancy. There exist various preventive measures to reduce waste thereby conserving resources and minimizing cost. Building construction process go through conventional systems and the various elements are done in segments. There are incidences of the plumber getting to site to tamper with the tiller's work. The building processes are not well integrated to minimize waste of materials and resources. There are no guides for green material specification. Material choices are made based on visual or ego satisfaction. There is no market outlet for supply and demand for recycled materials. Construction wastes are generally dumped and most times, indiscriminately. Domestic wastes are also treated the same way. Indiscriminate waste disposal in urban centers block drains and causes pollution.

Excessive building materials' cost is one major factor identifies for inadequate housing provision quantitatively and qualitatively [8, 47]. Implementing the green building principle will minimize the use of non-renewable construction materials and other resources such as energy and water through efficient engineering, design, planning and construction and effective recycling of construction debris. Maximize the use of recycled content materials, modern resource efficient engineered materials, and resource efficient composite type structural systems wherever possible. Maximize the use of re-usable, renewable, sustainably managed, bio-based materials (Intergovernmental Panel on Climate Change [46]. Up to 35% of the investment in conventional building process goes as waste [12]. Huge amount of financial resources goes down the drain thereby hampering the provision of much needed housing.

The problem of housing shortage, poor quality building and its facilities and environmental degradation due to the increased use and consumption of environmental and natural resources in the provision of affordable housing will be minimized if the principles of Green building development is embraced. The choice of green materials and equipment influences the implementation of sustainable construction practices. However, the lack of knowledge of green technologies is a challenge to the implementation of green strategies and standards [48, 49].

Construction and Demolition Wastes (C&DW) are generated during construction of new building and civil engineering structures, and during renovation of existing buildings and civil engineering structures or demolished. C&DW consist of debris that is generated during construction, renovation and demolition of buildings, roads, and bridges. Construction and demolition waste (C&DW) accounts for half of the solid waste generated in our environment Sustainable waste management processes implemented on housing provision will minimize cost and prevent large volume of waste on landfills [50].
