

1, JBS Haldane Ave, Tangra, Kolkata, West Bengal 700046 Kolkata, West Bengal, India
Few urban hotels in India carry the distinction of being certified LEED Platinum by the US Green Building Council — ITC Sonar, A Luxury Collection Hotel, Kolkata holds that recognition, and it shapes every dimension of how events are planned and experienced here. Positioned along the Eastern Metropolitan Bypass in Kolkata's New Town corridor, ITC Sonar brings together 31 acres of landscaped waterways and contemporary Bengali architecture with the operational rigour expected by corporate and social event planners. The property opened in 2003 as part of ITC Hotels' flagship Luxury Collection tier and has since established itself as the city's benchmark address for large-scale hospitality.
The event floor at ITC Sonar is anchored by the Sonargaon Grand Ballroom, one of Kolkata's largest hotel pillar-free banquet halls, accommodating up to 1,500 guests in a floating cocktail setup and approximately 1,200 in a formal banquet arrangement. Adjacent pre-function areas support delegate registration, cocktail receptions, and branded activations without congesting the main hall. Smaller boardrooms and breakout rooms — including the Hooghly and the Rupasi Bangla meeting rooms — cater to intimate corporate sessions ranging from 20 to 80 delegates in theatre, classroom, hollow square, and boardroom configurations. Integrated AV infrastructure with LED display panels, a dedicated event technology crew, and high-bandwidth Wi-Fi across all event spaces make this facility well-suited for hybrid conferencing and large-format MICE programmes.
ITC Sonar serves two distinctly different planner profiles. Corporate MICE bookers benefit from the property's capacity to host full-day conferences with concurrent breakout sessions, supported by dedicated event managers and ITC's established vendor ecosystem. Wedding planners, meanwhile, work with the Grand Ballroom's volume and the surrounding lawns and waterways — particularly the Lagoon Garden — to build multi-function celebrations across two or three days. One contextual nuance planners should factor in: the property's location on the Eastern Metropolitan Bypass, while excellent for guests arriving from New Town and the airport, sits roughly 45 minutes from central Kolkata in peak traffic, which can affect guest punctuality for evening-start events. ITC Sonar's in-house catering operates under the Responsible Luxury framework, offering multi-cuisine menus with a strong emphasis on Bengali culinary traditions alongside continental and pan-Asian options.
ITC Sonar's LEED Platinum certification — one of the earliest awarded to a hotel in India — is not merely an environmental credential. It signals a verified standard of building management, air quality, energy systems, and operational consistency that directly benefits event-day execution. ITC Hotels as a group has received multiple accolades from Travel + Leisure and Condé Nast Traveller for its Luxury Collection properties, with ITC Sonar consistently featured among India's top business and leisure hotels. For a planner, this translates to a property that maintains infrastructure standards year-round, not just during high season.
ITC Sonar's Spalba listing provides verified capacity figures, event space dimensions, and high-resolution floor layouts — the practical inputs an RFP requires before a site visit. The property's event sales team works on a request-based model with customised proposals covering catering packages, room-block allocations across 237 rooms and suites, and turnaround timelines for back-to-back event days. Evaluating ITC Sonar against comparable Kolkata facilities is straightforward on Spalba's comparison tools, giving planners a side-by-side view before committing to a walkthrough.












Queen Suite, 1 King, 111sqm/1194sqft, Wireless internet, for a fee, Coffee/tea maker

ITC One-B/F,Cocktail Hrs (6-8pm), Lily Pond View, 1 King, 50sqm/538sqft, Wireless internet, for a fee, Coffee/tea maker

Towers-B/F,Cocktail Hrs (6-8pm), Lily Pond View, 1 Queen, 38sqm/409sqft, Wireless internet, complimentary, Coffee/tea maker

Princess Suite-B/F,Cocktail Hrs (6-8pm), Separate living area,Lily Pond View,exclusive balcony, Queen, 84sqm/904sqft, Wireless internet, for a fee, Co…

Executive Club-B/Fast, 1+1 beverage during luxury hours,City View or Garden View, 1 Queen, 33sqm/355sqft, Living/sitting area, Dining area, Wireless i…

Executive Club Exclusive--B/Fast, 1+1 beverage during luxury hours,City View or Garden View, Queen, 38sqm/409sqft, Wireless internet, for a fee, Coffe…

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ITC Sonar, a Luxury Collection Hotel in Kolkata, offers banquet and conference venues that can host anywhere from intimate gatherings of 20 to large-format events exceeding 1,000 guests in theatre-style arrangements. The property features multiple named halls and an expansive outdoor lawn, making it one of Kolkata's most versatile luxury event destinations. Check Spalba for real-time space availability.
ITC Sonar houses several dedicated event spaces including the Grand Ballroom, which is the flagship banquet venue suited for large receptions and conferences, alongside smaller meeting rooms and boardrooms for breakout sessions. The outdoor lawns add significant capacity for cocktail evenings and pre-function setups. Planners can explore individual room capacities and floor plans directly on the Spalba listing for ITC Sonar.
ITC Sonar features a landscaped outdoor lawn that is well suited for cocktail receptions, sangeet ceremonies, and pre-function gatherings. The outdoor space complements the indoor banquet halls, allowing planners to design multi-zone event formats. Weather-dependent bookings may require contingency planning; the hotel's on-site events team can advise on marquee and cover arrangements based on the season.
ITC Sonar operates a fully in-house catering setup, a hallmark of the ITC Hotels group's celebrated culinary programme. Menus span Indian regional cuisines, Continental, Oriental, and Mughlai options, with dedicated Jain and vegetarian menus available on request. The property is known for its 'Responsible Luxury' sourcing philosophy. Alcohol is served and managed in accordance with West Bengal excise regulations. Enquire via Spalba for customised menu packages.
ITC Sonar's event spaces are equipped with professional-grade audio-visual systems including LED displays, projectors, PA systems, and high-speed Wi-Fi connectivity suited for hybrid and in-person corporate formats. A dedicated technical and banqueting operations crew supports event execution. Planners organising large MICE conferences should confirm specific AV specs and bandwidth requirements with the hotel's events coordinator through the Spalba enquiry channel.
ITC Sonar offers 237 rooms and suites spread across its distinctive low-rise, waterway-facing layout in Kolkata. Room categories include Superior Rooms, Executive Club Rooms, and premium Suites. This inventory is well suited for multi-day corporate conferences, destination weddings, and MICE programmes requiring block accommodation. Early group room block requests are recommended during peak season; the Spalba listing can direct planners to the enquiry form.
ITC Sonar is located in the Science City area of Kolkata, approximately 15 to 20 kilometres from Netaji Subhas Chandra Bose International Airport depending on the route taken. Travel time typically ranges from 30 to 50 minutes by road, subject to Kolkata traffic conditions. This hotel is a preferred luxury venue for corporate travellers and wedding guests flying into Kolkata from across India. Spalba's listing page includes location details.
The nearest Kolkata Metro station to ITC Sonar is the Science City or Ruby More area on the East-West corridor, though guests typically rely on taxis or hotel transfers given the distance from current operational metro lines. The hotel provides or can arrange airport and city transfers. Event planners booking outstation delegations are advised to coordinate transport logistics directly with the hotel's concierge team via the Spalba contact channel.
ITC Sonar provides on-site parking for event guests, with valet parking services available as part of the hotel's operational standard. The property's layout accommodates a reasonable number of vehicles for mid-to-large events. For high-attendance banquet events or weddings, planners are advised to confirm parking capacity and valet arrangements in advance. Details on overflow parking options can be discussed during the venue coordination call initiated through Spalba.
For luxury hotel wedding bookings in Kolkata, ITC Sonar is typically reserved six to twelve months in advance, particularly for peak season dates spanning October through February and April through May. Corporate MICE bookings with large room blocks benefit from enquiring at least four to six months ahead. Planners can submit a detailed event enquiry directly through the Spalba listing for ITC Sonar to check current availability and initiate discussions.
ITC Sonar's event booking policies, including advance deposit requirements and cancellation terms, are governed by the hotel's standard banqueting contract and vary depending on event size, season, and room block requirements. Specific terms are confirmed at the time of booking. Planners are encouraged to request the detailed booking agreement during initial discussions. The Spalba enquiry tool can help establish the first point of contact with ITC Sonar's events team.
As part of the ITC Hotels group, ITC Sonar issues fully GST-compliant tax invoices for corporate event bookings, banqueting, accommodation, and ancillary services. Corporate clients can provide their GSTIN at the time of booking for input tax credit eligibility. The hotel's accounts and events team can coordinate consolidated billing for multi-day MICE programmes. Planners can initiate billing structure discussions through the Spalba enquiry form on the property listing page.
ITC Sonar provides dedicated banqueting and events coordinators who manage multi-function wedding programmes including Mehendi, Sangeet, wedding ceremony, and reception across the property's indoor and outdoor spaces. The hotel's in-house culinary, décor, and operations teams collaborate on wedding logistics. For couples planning destination weddings or multi-day celebrations in Kolkata, the Spalba listing for ITC Sonar offers a direct channel to connect with the hotel's weddings team.
ITC Sonar's premium suite inventory, including its larger Suite categories, can serve as dedicated bridal suites for wedding couples and their immediate families. These rooms provide comfortable preparation spaces on wedding day. Availability is subject to the overall room block and event contract. Couples are advised to specifically request bridal suite allocation at the time of initial booking; this can be flagged via the Spalba enquiry submitted to the property.
ITC Sonar combines 237 keys of accommodation with multiple scalable banquet and conference spaces, in-house catering managed under ITC's culinary standards, and professional AV support under a single property. Its waterway-facing landscape and ITC's Responsible Luxury certification also serve as distinctive credentials for sustainability-conscious corporate clients. The combination of rooms, food and beverage, and technical infrastructure makes it a strong contender for large multi-day MICE programmes in Kolkata.







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