About Us

The legal profession is transforming rapidly in light of market disruption, changing client expectations and technological developments. Established in 2003, HSA’s focus on continuing evolution has enabled us to constantly adapt to emerging market dynamics and deliver consistent value to clients. We measure our success by the service we provide to clients, irrespective of the size, scope and scale of the matter at hand.We are a team of 20+ partners and over 120 professionals based out of our four offices across India’s major cities – Delhi, Mumbai, Bangalore and Kolkata.


We are a full-service law firm that prides itself on combining knowledge, experience and expertise to create outcome-oriented solutions and ensure our clients stay ahead of emerging opportunities and risks. Our areas of expertise include Projects Energy & Infrastructure; Banking & Finance; Restructuring & Insolvency; Corporate & Commercial; Regulatory & Policy; Defence & Aerospace; Dispute Resolution; Environment Health & Safety; Real Estate;  Technology Media & Telecommunications; Taxation; and Investigations. We are a law firm built around people. We embrace collaboration while advising our clients and assemble teams of experts to bring the right talent to address every client issue. Our belief in delivering legal advice that recognizes each client's strategic goals and business requirements allows us to offer pragmatic and implementable support across our platform of practices and sectors.

Our Journey


Start of our journey with humble offices in New Delhi and Mumbai


Ranked as a Tier 1 law firm for Projects & Energy practice by Legal 500


Moved to a larger office at New Delhi with more than 50 professionals


Rebranded the Firm with a new logo


Expanded offices in Mumbai, Bengaluru and Kolkata and is home to 100+ professionals


Awarded at the FT Asia-Pacific Innovative Lawyer Awards in Hong Kong for advising Chhattisgarh InfoTech Promotion Society in the implementation of the Sanchar Kranti Yojana


4 offices pan-India, Full-service offering, 30+ partners and over 150 professionals


Client Feedback

We find that HSA Advocates is an excellent law firm for the reason that they are always providing very clear legal opinions which are very well written and clear.

Legal 500 2020

Praised for having ‘great knowledge’ of the practice area and for ‘clear’ communication of complicated legal matters to clients.

RSG 2020

Extremely professional, with lots of knowledge in infrastructure and project financing," noting that it "understands the perspectives of lenders, developers and policymakers.

Chambers and partners 2019

The disputes team at HSA is exceptional. Under the leadership of Hemant Sahai, the team has dedicated lawyers who have the ability to work round the clock to assist a client needing urgent advice and assistance.

Legal 500 2020

Confident and professional in its approach" and highlights its "Strong understanding of the EPC business.

Chambers and partners 2019

HSA Advocates is an excellent law firm which provides very clear legal opinions.

Legal 500 2020

The key strengths of this team are its efficiency and quick turnaround of deliverables, as well as its strong subject matter expertise.

Chambers and partners 2019

They are a professional team and I must say meticulousness stands our among other qualities. They are very flexible to the customer’s requirements and are very responsive.

Chambers and partners 2018

HSA Advocates provides prompt service and is proactive in its approach.

Legal 500 2020

They keep pace with our demanding schedule and have put together a very good and enthusiastic team

Chambers and partners 2019

One of the key strengths is that there is partner involvement throughout the course of the assignments, which ensures the quality of the advice and ensures that deadlines are being met.

Chambers and partners 2018