Nestled in the heart of Sivasagar, Assam, D Block Ongc Colony stands as a beacon of modern living, offering an ideal balance between serenity and accessibility. If you're in the market for a 1 BHK apartment, this location could very well meet all your requirements. Allow us to guide you through what makes D Block Ongc Colony a excellent choice for prospective buyers like you. The Charm of D Block Ongc Colony D Block Ongc Colony is not just an deal with; it's a lifestyle statement. The colony is known for its well-planned layout and lush green surroundings, providing a serene environment that is perfect for both young professionals and small families.