Sustainable Building Certifications
OUR EXPERIENCE We certify buildings that are worth more, consume less energy, and attract more capital
We are the leading team in sustainable building certifications in Spain. We manage more than 30 international certifications and ratings to ensure your real estate assets meet the most stringent ESG standards, qualify for green financing, and maximize their market value. We have the most proven track record in Spain and hold the world record for BREEAM certifications in 2024 and 2025.
OUR CERTIFICATIONS Certifications
BENEFITS OF CERTIFYING YOUR BUILDING Benefits of certifying your sustainable building
Certifying a building is an investment that offers a real, measurable return that grows over time. Here are the six main benefits our clients gain by obtaining certification for their existing buildings or those currently under construction.
Higher appraised value
Sustainably certified assets command value premiums of between 5% and 25% compared to equivalent non-certified assets, according to studies by JLL, CBRE, and Knight Frank. In a tightening market, certification is one of the factors that best protects value against depreciation.
Access to Green Financing
Certification is the key to accessing preferential terms for mortgage loans, green bonds, and European financing facilities linked to the EU Taxonomy. Institutional investors and venture capital funds require it as a minimum due diligence requirement.
Reduction in Operating Costs
Certified buildings achieve average savings of 20% to 40% in energy and water consumption. The investment in certification yields a demonstrable return within 3 to 7 years, depending on the type of asset, the certification program, and the starting point.
ESG Regulatory Compliance
Compliance with SFDR, CSRD, the EU Taxonomy, and the EPBD Directive. Certification is the most robust way to demonstrate this compliance to buyers, investors, government agencies, and external auditors, thereby avoiding the risk of stranded assets and regulatory penalties.
Higher occupancy and higher rents
Institutional tenants —particularly in the office, logistics, and retail sectors— prioritize certified properties to meet their own ESG commitments. This results in lower vacancy rates, longer leases, and rents that exceed those in the non-certified market.
Competitive Differentiation and Reputation
In a market where sustainability is already a factor in purchasing and leasing decisions, certification is the strongest argument for positioning the asset ahead of the competition, attracting international capital, and credibly communicating the organization’s sustainability commitments.
SECTORS THAT CAN BENEFIT Sustainable building certifications by asset type
Each type of asset has its own most appropriate certifications. These are the six types we work with most often.
Living
Residential properties for sale and rent, BTR, coliving, and student housing
In this sector, sustainability certifications are the strongest argument for attracting tenants with an ESG profile, accessing green mortgage financing, and staying ahead of the energy retrofit requirements of the EPBD directive.
Office
Offices for rent, corporate offices, and business parks
Certification is essential for attracting tenants committed to Net Zero and maintaining the asset’s value in the eyes of international funds in a market where sustainable workspaces are now expected.
Hospitality
Hotels, resorts, and tourist accommodation properties
Sustainability certifications are becoming an increasingly important differentiator for attracting international travelers and hotel investment funds that prioritize ESG criteria.
Industrial
Logistics facilities, industrial parks, and distribution centers
It is one of the sectors that has seen the greatest growth in demand for certification, driven by major e-commerce operators and companies with decarbonization commitments in their supply chains.
Data Center
Data processing centers and DPCs
The high energy intensity of these assets requires specific solutions in the areas of energy efficiency, renewable energy, water management, and connectivity certification to meet the ESG commitments of international operators.
Retail
Shopping centers, retail parks, and mixed-use properties
Major brands require property owners to make verifiable ESG commitments as a condition for signing or renewing leases. Certification is the key to retaining high-quality tenants and reducing vacancy rates.
WORLD BREEAM RECORD IN 2024 AND 2025
We have achieved the world’s highest BREEAM score for two consecutive years: the Intu Xanadú Shopping Center in 2024 and the Islazul Shopping Center in 2025, earning two nominations for the BREEAM International Awards.
SIMULTANEOUS MANAGEMENT OF MORE THAN 30 PROGRAMS
We work in parallel with more than 30 international certifications and ratings, sharing evidence across schemes to reduce costs, lead times, and the owner’s workload without sacrificing quality or ratings.
ESG INTEGRATION FROM DAY ONE
We align each certification with the EU Taxonomy, GRESB, and corporate ESG reporting frameworks from the outset of the project to ensure a coherent strategy that meets the requirements of the building, the portfolio, and the organization.
ACTIVE PARTICIPATION IN INTERNATIONAL ORGANIZATIONS
We are members of GBCI, the Living Future Institute, and BIA Italia. This allows us to anticipate changes in the criteria of certification programs, advocate for our clients’ interests before certification bodies, and gain first-hand information on the evolution of standards.
100% SPECIALIZED TEAM
Our team consists exclusively of architects, engineers, and consultants who are fully committed to the sustainability of the built environment. Each project is managed by the same team from start to finish.
MORE THAN 150 CERTIFIED ASSETS IN SPAIN
With more than a decade of experience and over 150 certified properties in the office, retail, hospitality, residential, industrial, and public infrastructure sectors, we understand every detail that makes the difference between a good score and a record-breaking one.
YOUR PARTNER IN SUSTAINABLE BUILDING CERTIFICATIONS The team that has set the BREEAM world record two years in a row
We are exclusive specialists in certification and sustainability in the built environment, with the most extensive track record of sustainable building certifications in Spain, and more than twelve years of experience certifying properties across all segments of the real estate market.
HOW WE WORK This is how we work at ASLA Green Solutions
A clear process designed to maximize your asset’s score at the lowest possible cost and in the shortest possible time.
Initial Consultation
We assess the asset, identify its real certification potential, and determine the highest achievable rating for each relevant scheme — at no cost and with no obligation.
Strategic Selection
We design the optimal combination of certifications based on the asset's specific goals: sale, leasing, refinancing, ESG reporting, or operational improvement.
Gap Analysis and Roadmap
We prepare a detailed action plan outlining the measures needed to reach the target rating, the estimated timeline, projected costs, and expected return for each certification.
Comprehensive Documentation Management
We coordinate all technical documentation, supporting evidence, communications with the certifying body, and coordination with the project's other stakeholders.
Ongoing Monitoring
We manage the certificate issuance process and provide ongoing support for maintaining the certification, progressively improving the score, and periodic recertification.
Free Initial Audit
We assess the asset, identify its real certification potential, and determine the highest achievable rating for each relevant scheme — at no cost and with no obligation.
Strategic Selection
We design the optimal combination of certifications based on the asset's specific goals: sale, leasing, refinancing, ESG reporting, or operational improvement.
Gap Analysis and Roadmap
We prepare a detailed action plan outlining the measures needed to reach the target rating, the estimated timeline, projected costs, and expected return for each certification.
Comprehensive Documentation Management
We coordinate all technical documentation, supporting evidence, communications with the certifying body, and coordination with the project's other stakeholders.
Ongoing Monitoring
We manage the certificate issuance process and provide ongoing support for maintaining the certification, progressively improving the score, and periodic recertification.
SUCCESS STORIES IN SUSTAINABLE BUILDING CERTIFICATION Featured Projects
A selection of our most notable projects that illustrate the scope, diversity, and quality of our work across various types, plans, and ratings.
Islazul Shopping Center
91,000 m² · Retail · BREEAM In-Use P1 & P2 · Madrid, Spain
A shopping center with 180 stores. Two nominations for the 2022 International BREEAM Awards.
Highest international rating by 2025, including environmental policies and procedures.
Intu Xanadú Shopping Center
154,000 m² · Retail · BREEAM In-Use P1 & P2 · Madrid, Spain
A shopping center with 220 stores. Winner of the 2025 BREEAM International Awards.
Highest international score in 2024, including environmental policies and procedures.
Castellana Properties Portfolio
333,000 m² · Retail · BREEAM In-Use P1 & P2 · Madrid, Spain
Seven shopping centers in Spain. Three nominations for the 2022 International BREEAM Awards.
El Faro, Habaneras, Puerta Europa, Granaita, Bahía Sur, VallSur, and Los Arcos.
Our clients:
START YOUR PROJECT WITH US Ready to certify your asset?
Our team analyzes your asset free of charge, identifies the highest achievable rating, and designs a roadmap that maximizes returns and meets the ESG requirements of investors and regulators.