Streamlined solutions for environmental permitting

Supporting your projects with expert guidance through every stage of the permitting process.

Our Services

Included With Every Project

  • Regulatory expertise

  • Dedicated Project Manager

  • Clear Project Status Updates

  • Quick Turnaround

  • Renewal Reminders

Need help? We can't wait to hear from you!

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Nikita Gupta
Professional Engineer

Nikita is passionate about creating smart, effective design solutions tailored to each client’s unique needs. With over a decade of experience in NYC’s building engineering industry, Nikita has in-depth knowledge of local codes and regulations. With a strong focus on optimizing energy use of building systems, she brings both technical insight and practical experience to every project. She is a Licensed Professional Engineer in the State of New York.

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Vinay Gupta
Project Manager

With years of hands-on experience managing businesses in the eyewear and food industries, Vinay brings a unique, systems-oriented approach to operations at GreenCore Engineering. Vinay's interest in energy efficiency and sustainable infrastructure is what led him to the engineering space.

FAQ

Your permitting questions, answered

Get straightforward answers about our environmental permitting services. For more details or specific inquiries, please reach out to our team.

Who is required to apply for a DEP CATS permit?

Any NYC building with fuel-burning equipment rated over 350,000 BTUs per hour must register through the DEP’s Clean Air Tracking System (CATS). This applies to both residential and commercial properties.

How often do DEP CATS permits need to be renewed?

CATS permits must be renewed every 3 years. Failing to renew on time can lead to violations and costly fines.

Is a site visit required for a DEP CATS permit?

For first-time applicants, we typically conduct a brief on-site inspection to verify equipment details and ensure accurate filings.

What if the equipment has been removed — do I still need to file?

Yes, a formal cancellation request must be submitted to the DEP. We can handle the cancellation process to ensure proper closure.

How can I find out the pricing for your services?

Pricing depends on your equipment type and scope of work. Contact us and we’ll provide a quote within one business day.

What happens if I don’t renew my CATS permit or file a cancellation?

You may face severe fines and, in some cases, hearing summons to resolve violations. Staying current avoids legal and financial headaches.

Testimonials

Kim H
June 2025

Efficient and simple process. Good price. Good customer service. Who could ask for anything more? (...)

Stephanie KS
May 2025

Customer service was excellent and they patiently answered all of my questions.

Mike B
Jan 2025

Great communication from the team when I mistakenly did not provide all my info online. Very fast service too. Thank you!

Maggie S
Nov 2024

I always found them very professional, polite, service minded, good communicators, personal, and expedient. Highly recommended.