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This assesment is an evaluation of the physical condition of a property.

HEROS Environmental Review

We help manage and store supporting
documentation for Environmental Reviews.
Energy & Sustainability

We’re experienced in Energy Benchmarking, Modeling, and Green Building Certifications.

Environmental Services

D3G has perfected the Environmental Site Assessment process over our 30-year history.
Architectural & Cost Review

We provide cost conclusions essential for new construction and substantial rehabilitation.
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Affordable Housing Consulting

Learn more about D3G’s roots, growth, and industry innovation.

Environmental Consulting

Learn more about D3G’s roots, growth, and industry innovation.
Building Evaluation Consulting

Learn more about D3G’s roots, growth, and industry innovation.

Energy & Sustainability Consulting

Learn more about D3G’s roots, growth, and industry innovation.
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About Us
Due Diligence Services
Capital Needs Assessments

This assesment is an evaluation of the physical condition of a property.

HEROS Environmental Review

We help manage & store supporting
documentation for Environmental Reviews.

Energy & Sustainability

We’re experienced in Energy Benchmarking, Modeling, & Green Building Certifications.

Environmental Services

D3G has perfected the Environmental Site Assessment process over our 30-year history.

Architectural & Cost Review

We provide cost conclusions essential for new construction & substantial rehabilitation.
Consulting Services
Affordable Housing Consulting

Learn more about D3G’s roots, growth, & industry innovation.

Environmental Consulting

Learn more about D3G’s roots, growth, & industry innovation.

Building Evaluation Consulting

We’re experienced in Energy Benchmarking, Modeling, & Green Building Certifications.

Energy & Sustainability Consulting

D3G has perfected the Environmental Site Assessment process over our 30-year history.
Our Work
Case Studies

Learn more about our notable projects & community work.

D3G Gives Back

We believe in social responsibility within our workspace & communities

Blog

Read up on the latest industry news, insights, & team updates.
Leadership
Careers
Open Positions

Interested in working at D3G? Explore our open positions.

Benefits

Learn more about D3G’s employee benefits & unique perks.

Washington Marriott Georgetown Hotel

Name: NLHA Annual Meeting
Start: 2026-06-16T00:00:00+00:00
End: 2026-06-18T23:59:59+00:00
Location: Washington Marriott Georgetown Hotel

1221 22nd St., NW
Washington, DC 20037 United States Get Directions

Events at this venue

June 2026
NLHA Annual Meeting

June 16 - June 18

Washington Marriott Georgetown Hotel 1221 22nd St., NW, Washington, DC, United States

Rob Hazelton will be speaking, and Jen and Erich will be in attendance.

June 2026