Sevenmallay Tea Estate situated at 4890 feet AMSL in the South/West of the beautiful Kannan Devan Hills, is the largest Tea Estate of the Company in South India. The name of the Estate is attributed to the Hindu God, Sivan and "mallay" denoting a hill, which with the passage of time got designated as Sevenmallay Estate. The six divisions on the estate today are resultant to an amalgation (in the year 1954) of the erstwhile Parvathi, Sevenmalley and Munnar Estates.

Parvathi Division is named after Sivan's consort Parvathi and the estate as such was opened by Mr. A. H. Sharp a pioneer planter in 1900 which was one of the first areas to be planted with tea in the High Ranges. The estate which had a factory undertaking 'legg cut manufacture' was closed down in the year 1968 as the demand for that variety of tea had dwindled and it was not considered economical any more. Green leaf of the estate is diverted to other factories of the company for processing.

Sevenmallay estate has the Munnar town along its eastern boundary and historic landmarks of Munnar such as the Munnar Christ Church, The Munnar Workshop, K.D.H. Club. The Munnar Supply Association, the Cenotaph, The Ropeway Station and the erstwhile Gymkhana grounds dot the landscape of the town alongside the estate. The estate receives an annual rainfall of 170 inches.

One of the hallmarks of the estate is the top-notch football team which has been the winner of the prestigious Annual Finlay Shield Tournament on more than 22 ocassions in the history of tournament. Strawberry cultivation is done on a large scale in the estate which accounts for the major share of the strawberry in take at the Dare Project for the Strawberry preserve. Cattle rearing to the extent of grazing available is encouraged to provide fresh milk to the community, apart from being an additional source of income.

The Bharat Scouts and Guides Centre for Devikulam is located at the erstwhile Gymkhana Building site at Sevenmallay Estate. The Idukki Dam is visible from the Ottaparai-Nagermudi Ridge bordering Pullivasal Estate on a clear day. The Sevenmallay factory still boasts of a very huge centre pillar of wood like a ship's mast that holds the super structure which was built in the year 1901.