Osea Island, The Powerhouse

Osea Island, Maldon, CM9 8UH -

Up to
250 guests

An enchanting private island with a variety of properties, event venues, beaches, land and beautiful nature on London’s doorstep.

Our collection of properties range from grand houses to cosy cottages and apartments and our event venues are historic and quirky.
Osea is an eclectic, rustic and extraordinary experience and a blank canvas for creating memories that will live on for years to come.

A lofty grand space formally housing the islands electricity power station. The Power House is a blank canvas which can be styled to make any event sparkle.

Capacity & layout

Standing

up to 250

Dining

up to 120

Boardroom

up to 180

Amenities

Public transport

Premises parking

Overnight accommodation

Space rules

Cancellation policy

100% refundable 1 day before the event

Location

Reviews

Phil's Piano Pieces
September 2024
Heavenly place with such rustic beauty and delightful accommodation. It was perfect for our Team building Programme - wide open fields and gardens and so many special landmarks and facilities. So memorable and special. a big shout out to Linda and her husband for the amazing catering and delicious food, to Carlie for being so brilliantly organised and attentive - and our new best friend, Calvin, who runs the best pub in the planet - and looks after the Island with a fabulous team. He gave us so much extra knowledge about the Island and is a total legend. we LOVED it and will be back with other clients, for sure
Ash Hatchard
September 2024
What an absolute hidden gem. I hadn't heard of Osea Island before our trip and it was nothing short of magic. Cannot recommend it enough. The staff go above & beyond to ensure you have THE best stay and we absolutely did. Special shout out to Carlie, Linda, Calvin & Paul who went above & beyond for us all.
Emma Wills
September 2024
We had an amazing stay at Osea. The staff were all so friendly and gave us a plethora of information and assistance when it came to booking our group trip, from daytime activities to delicious catering. The approach to the island from the causeway was nothing short of spectacular, and the Captain's House (where we stayed) was magical, with fantastic interiors and stunning views across the water. Can't wait to be back on the island - what a special place!