Sustainable home building: key strategies and certifications to increase the value of your investment

Sustainable construction is here to stay. Although it has not yet reached its peak, everything points to the fact that, in the coming years, this type of building will mark a before and after in the real estate sector.

The aim is clear: to reduce the environmental impact of buildings and improve the quality of life their occupants by using more responsible materials, renewable energies and efficient design from the start of the project.

In order for this change to become a reality – and not just an aspiration – various strategies and certifications have emerged to identify which projects truly comply with the principles of sustainable construction. These include BREEAM certification, the first in the sector to assess the environmental performance of a building in all its phases.

In fact, Quadratia was a pioneer in Spain by achieving the first BREEAM® Urbanism certificate with its Allonbay Village project, a milestone that reinforces its commitment to a more respectful and efficient development model.

Beyond the environmental commitment, investing in sustainable housing also has a direct impact on the value of the property. These buildings tend to appreciate in value, consume fewer resources and respond to a growing demand from buyers and investors looking for quality, efficiency and environmental awareness.

Do you want to know how applying sustainability in housing can make a difference to your investment? Then read on!

Sustainable construction: what it is and why it is the future of the industry

Sustainable construction is emerging as the new industry standard, not only for its commitment to the environment, but also for its ability to generate long-term value. But how is it being implemented and why is it so urgent?

For decades, the sector has relied on polluting energy sources such as oil, coal or natural gas, making buildings one of the largest emitters of CO₂ globally.

Given this scenario, the commitment to ecological and sustainable construction is more than a trend: it is a necessity. This type of project takes into account the environmental impact in all stages – from design to waste management – with the aim of minimising it as much as possible, while at the same time providing more efficient, healthier and more attractive homes for today’s buyers, based on a series of fundamental pillars.

Main pillars of sustainable construction

• Use of sustainable building materials: sustainable materials are those whose manufacture and transport generate the least emissions and whose useful life is the longest.
• Promotion of renewable energy sources: buildings are required to be self-sufficient, with the aim of achieving zero energy consumption wherever possible. This is not only good for the environment, but also for our wallets.
• Maximising energy efficiency: especially in the case of air-conditioning systems, for which new technologies such as aerothermal energy, photovoltaic panels or dual-flow ventilation are starting to be used.

Sustainable building certification: a complete guide

In line with the above, sustainable construction certificates serve to confirm that a building has been designed and executed following these principles or high standards of energy efficiency, environmental impact and occupant wellbeing.

However, a house may have been designed and built using sustainable principles or strategies without necessarily being officially certified. In these cases, sustainability still adds value, efficiency and quality to the project.

Thanks to our experience in certified developments such as the renowned Allonbay Village, we incorporate sustainable strategies in all our projects, thus offering our clients more efficient and higher-value homes.

Isabel Soriano, Sales and Marketing Office Coordinator at Quadratia

Certification is not essential, but it does provide additional recognition and a competitive advantage, as it acts as an objective guarantee and helping to add value to the investment.

Below, in this complete guide, we present the most recognised certifications in the world and in Spain.

Building Research Establishment Environmental Assessment Methodology (BREEAM)

Developed in the UK, BREEAM is one of the oldest and most widespread sustainability certification schemes in Europe. Its approach is based on assessing the environmental performance of buildings across eight broad areas related to the environment and sustainability: economy and buildings, resources, transport, ecology, site design, community, climate and energy.

In Spain, the Allonbay Village project , promoted by Quadratia, has been a pioneer by becoming the first urban development in the country to achieve the BREEAM® Urbanism certification. This is a particularly demanding certification, which has only been achieved by 52 projects worldwide.

In addition, within the Allonbay Village complex, several developments have been certified under the BREEAM residential standard, including Allonbay Aqua, Allonbay Arena and Allonbay Aster.

This certification not only validates the environmental commitment of the project, but also contributes to revaluing it in the market, positioning it as an attractive and differentiating option for today’s buyer.

Leadership in Energy & Environmental Design (LEED)

LEED is one of the most prestigious international sustainability certifications. Developed by the United States Green Building Council (USGBC), it evaluates key aspects such as energy efficiency, use of sustainable materials, indoor environmental quality and efficient water management.

Its rating system allows buildings to be classified into different levels of sustainability (certified, silver, gold and platinum), providing transparency and comparability between projects.

Although it originated in the United States, its global recognition has allowed more and more developments in Spain to choose to integrate its requirements from the design phase, especially in large urban developments and corporate buildings that seek to differentiate themselves in terms of environmental responsibility and operational efficiency.

Green Certification: sustainability adapted to Spain

Green certification, promoted by the Green Building Council Spain (GBCe), is characterised by the adaptation of sustainability principles to the specific conditions of the Spanish context: regulations, climate, resources and environmental priorities.

It assesses the environmental impact of a building throughout its life cycle and gives greater weight to factors such as energy efficiency, choice of materials and integration with the environment.

Its local focus makes it a very useful tool both for developers who want to position themselves in the national market and for those who are looking for a more flexible methodology that reflects the reality of building in our country.

In addition, it enables progress towards goals aligned with the 2030 Agenda and the achievement of the SDGs, which reinforces its strategic value in the face of future regulations and requirements of the real estate sector.

WELL Building Standard

Unlike other certifications that focus on environmental sustainability, WELL focuses on the health, comfort and well-being of the people who live in buildings.

Developed by the International WELL Building Institute (IWBI), this certification assesses parameters such as indoor air quality, natural and artificial lighting, thermal comfort, acoustics, hydration and the promotion of healthy habits.

Increasingly valued in offices, educational centres and collective residences, WELL responds to a growing demand for healthy spaces, in line with a people-centred vision of architecture.

In the residential sector, its application allows differentiation through a more conscious and end-user oriented design, which can become a key selling point for certain buyer profiles that prioritise daily wellbeing and quality of life.

Advantages of investing in sustainably built housing in Spain

The Spanish real estate market is moving towards more environmentally friendly and energy efficient models.

In this context, investing in sustainable housing in Spain is not only a bet on the future, but also brings economic and social benefits that should be taken into account, both in the short and long term.

Want to know why more and more people are choosing this type of construction? We’ll tell you right away.

1. Save energy from day one

Sustainable housing is designed to optimise energy and water consumption through advanced technologies that significantly reduce electricity and heating bills, allowing homeowners to save significant money over the years.

2. Revalue your property with sustainability

Homes with sustainability strategies or certificates are more in demand in the high quality property market, as landlords and buyers are looking for efficient and environmentally friendly homes.

As a result, these properties tend to increase in value over time and are rented or sold more quickly than traditional homes.

3. Reduce your footprint and help the environment

Opting for sustainable housing is synonymous with reducing environmental impact by generating fewer CO₂ emissions. In addition, they are buildings that reduce the consumption of natural resources and use ecological materials with a lower carbon footprint.