As Ghana experiences rapid urbanization, the housing and construction sector faces mounting pressure to meet growing demand while addressing environmental challenges. The choice of building materials has emerged as a critical factor in determining not only the durability of structures but also their environmental impact.
Industry analysts say sustainable building materials offer a path toward greener, more resilient cities, as the country grapples with a housing deficit estimated at 1.8 million units and urban population growth of 3.3 percent annually.
Traditional building materials such as cement, concrete and timber remain widely used across Ghana. However, their production and use carry significant environmental costs. Cement manufacturing accounts for approximately 10 percent of global carbon dioxide emissions, while unsustainable timber harvesting has been linked to deforestation and loss of biodiversity.
Sustainable alternatives such as bamboo, compressed earth blocks, recycled steel and fly ash concrete present environmentally friendly options. These materials reduce reliance on non-renewable resources, lower carbon footprints and improve energy efficiency in buildings. In the long term, they can also reduce maintenance costs and improve building durability.
Buildings constructed with sustainable materials often offer improved thermal performance, helping to reduce energy consumption for cooling and heating. This is particularly relevant in Ghana, where rising energy costs are a concern for homeowners and commercial developers alike. Statistics from 2019 indicated that the building and construction sector consumed about 41 percent of Ghana’s total energy.
Sustainable materials can also support local economic development. Materials such as compressed earth blocks and bamboo can be sourced locally, creating jobs and strengthening domestic supply chains while reducing dependence on imported construction products.
Despite the clear benefits, uptake of sustainable building materials in Ghana remains limited. Key challenges include lack of awareness among developers and homeowners, perceptions of higher upfront costs and limited regulatory incentives.
The government launched a Climate Action Roadmap for Buildings and Construction in October 2024, targeting zero emissions in the sector by 2050. Deputy Works and Housing Minister Dr Prince Hamid Armah stated that the roadmap sets specific objectives including promoting the use of low-carbon materials, improving building efficiency and increasing resilience to climate change.
The Ministry of Works and Housing, in collaboration with the United Nations Environment Programme (UNEP), United Nations Human Settlements Programme (UN-Habitat) and United Nations Office for Project Services (UNOPS), developed the roadmap following the Global Alliance for Buildings and Construction framework.
The building and construction sector accounts for over a third of global energy-related carbon emissions at about 37 percent, 40 percent of global energy consumption, 30 percent of raw material extraction, 12 percent of global water consumption and 20 percent of waste generation, according to official data.
A director at the Ministry of Works and Housing, Bernard Ayensu, stated in October 2024 that a technical working group would be formulated to coordinate and track progress in the uptake of recommendations in the roadmap at the national level. The ministry has commenced preparations to mainstream the roadmap in the 2026-2029 national medium-term development policy framework.
Government policies, industry guidelines and public-private initiatives could help accelerate adoption. Incentives such as tax rebates, certification programs and awareness campaigns are increasingly used globally to encourage sustainable construction practices.
Globally, green building practices are gaining momentum, driven by the need to reduce carbon emissions and build resilient infrastructure. Ghana stands at a crossroads where the country can continue relying on conventional construction methods or embrace sustainable building materials as a strategy for environmental stewardship, cost efficiency and long-term urban resilience.
With deliberate policy support, industry collaboration and increased awareness, sustainable materials can play a central role in shaping Ghana’s urban landscape as the country works toward decarbonizing its construction sector by 2050.
