Earn the sustainability certification for your existing properties. Get started today!
For owners, investors, asset managers as well as consultants, CPMs, AMOs—the IREM® CSP (Certified Sustainable Property) certification builds competitive advantage for your properties. Better processes, tighter operations, less expenses, and more value.
Benefits of a CSP:
Expanded to include more asset types, the CSP application is clear and actionable, giving you the ability to complete it on your own. The CSP is at a price point that’s attractive and scalable to your entire portfolio
- Improve Net Operating Income
- Reduce energy costs
- Enhanced ESG / GRESB reporting
- Appeal to tenants and residents
- Do your part supporting sustainability
Certified Sustainable Properties can:

Boast an average ENERGY STAR® score of 77.

Produce 26% less greenhouse gas emissions.

Give tenants a reason to renew.

Tighten operations & enhance efficiency.
- Widespread – #1 most attainable sustainability certification earned by 2,300+ properties.
- Higher property values – CSP creates more value, better processes, and cost controls.
- Existing buildings – certify one, three, ten or more with the CSP Volume program.
- No other certification is easier to implement, more cost-effective and recognized by GRESB Real Estate Assessment and other ESG reporting.
- For owners and investors with 10 or more properties take advantage of the Volume program.
Disclaimer of legal liability
The IREM Certified Sustainable Property (CSP) program is a voluntary program that provides sustainability best practices and evaluation. Participation is open to all properties that meet program requirements as represented to IREM by program applicants. IREM makes no guarantee on the actual sustainability performance of a certified property at any particular time, and IREM takes no responsibility for claims about property performance, value, or insurability based on certification under the IREM CSP program.

