Closing the gap: rethinking certification strategy for multifamily portfolios  

Wellness and sustainability have been shaping leasing decisions in multifamily for years, but the calculus has recently shifted. Where tenant demand once drove much of the discussion, institutional investors and sustainability reporting frameworks have entered the conversation, connecting sustainability performance directly to asset valuation in ways that have raised the stakes considerably. Owners and operators who can credibly demonstrate a commitment to resident well-being are increasingly differentiated among investors and prospective tenants alike. The challenge lies in demonstrating this commitment in a standardized, benchmarkable way.

GRESB data from recent years surfaces this challenge clearly. Residential owners are among the most active participants, yet residential portfolios consistently score lower than other asset types in both the Development and Management Components. Within these scores, although trending upward, the Certification aspect remains a persistent weak point. This gap reflects the genuine complexity of certifying buildings that are continuously occupied, managed through layered operating relationships, and sometimes evaluated by frameworks better suited to commercial real estate.

The good news is that these constraints are solvable. Several certification frameworks account for the realities of residential operations, and a suitable approach to certification can reduce costs while maximizing returns for asset owners.

GRESB’s introduction of the Residential Component in 2025 has important implications for portfolio owners and operators who participate in GRESB. Specifically, the new indicators within the Residential Component sit entirely within the Management Component and focus on the social and community dimensions of building performance. Key focus areas include:

• Resident safety, fair housing practices, and affordability initiatives
• Community programming and social engagement strategies
• Integration of sustainability requirements into lease agreements and operating standards
• Wellness-oriented policies across building operations

The social component of sustainability reporting is widely acknowledged as one of the most difficult areas to quantify and benchmark. GRESB’s Residential Component is designed to provide a more tailored approach for multifamily owners by focusing on the issues most material to residential portfolios, while aligning closely with existing wellness certification frameworks.

For multifamily owners seeking stronger GRESB outcomes alongside improved resident retention, we typically recommend seeking wellness certification frameworks with design logic that closely matches the realities of residential operations. Performance-driven frameworks are excellent avenues for quantifying impact. On the other hand, more policy-driven frameworks allow well-managed buildings to pursue certification without major capital investment, creating a cost-effective approach to scaling certification across portfolios. Policy-driven frameworks also frequently emphasize content that maps directly to what prospective tenants evaluate when choosing where to live. 

For multifamily owners already investing in the Residential Component and the policies it emphasizes, pursuing wellness certification can be a matter of formalizing and documenting work that is already underway. When approached in this way, the incremental cost of certification is modest relative to the dual return: a stronger GRESB Score and a compelling wellness story for prospective tenants. A knowledgeable sustainability consultant can help owners choose the framework best suited to their portfolio and goals. 

Once your team has selected the most suitable certification framework, an informed strategy can position portfolio owners for success. Having worked with multifamily owners on wellness certification across a range of portfolio sizes and regions, Brightworks has identified several patterns that consistently drive efficient, scalable outcomes.

1. Build portfolio-wide policies before pursuing building-level credits
   With a policy-driven certification, well-designed portfolio-level policies can unlock points across many buildings simultaneously. Owners who establish consistent standards (e.g., smoke-free policies, community programming, food access, and fitness amenities) and integrate them into property management agreements can certify new assets with significantly less effort than owners who approach each building as a standalone project.
2. Embed requirements in operator selection
   Some of the most effective implementations we see begin before a property management company is engaged. When owners incorporate relevant operating requirements into their RFPs, certification becomes a natural outcome of the operating relationship rather than an add-on. For example, an owner might require the operator to offer resident fitness programming or maintain specific food access standards.
3. Plan for recertification from day one
   Some certification frameworks require recertification every few years and may introduce new versions during that period. Owners who approach recertification as a continuous process navigate these transitions far more smoothly than those who treat certification as a one-time event. A successful approach often includes maintaining documentation, tracking policy compliance, and staying current with standard updates. Establishing documentation habits early and communicating expectations to on-site staff substantially reduces the effort required for recertification.
4. Pursue cross-platform credits
   For clients that participate in GRESB, the most strategically valuable certification credits are naturally those that also satisfy GRESB indicators. For multifamily owners, these dual-purpose credits represent one of the clearest paths to maximizing the return on certification investment. Walk Score® documentation, smoking policies, community event programming, and other policies commonly apply to both GRESB and building wellness certifications. A thoughtful pre-certification gap analysis that maps certification credits against an owner’s existing GRESB reporting can quickly identify these high-leverage opportunities and help prioritize the credits that offer the greatest cross-platform value.

The multifamily sector’s underperformance on GRESB certification metrics is a market signal. It points to a landscape that has historically underserved residential owners and to an opportunity for those willing to navigate it deliberately. Done well, a certification strategy does more than strengthen benchmark performance. It provides documented, verifiable evidence of a commitment to resident well-being that supports leasing conversations, investor engagement, and the long-term value of the asset.

This article was written by Erin Hocking, Karin Miller, and Melanie Bontusa from Brightworks Sustainability. Learn more about Brightworks Sustainability here.