A peel tower was built on the site during the reign of King Henry II. The old hall dates back to the 12th century, with wings added in the 16th century; the building has remained in the Hasell family since 1679 when it was acquired by Sir Edward Hasell, who had been steward to Lady Anne Clifford. In 1840 Edward and his wife Dorothea had a daughter who grew to be the writer Elizabeth Julia Hasell. The main frontage to the building was added in 1744.
The house benefits from an extensive garden which received the Garden of the Year Award, sponsored by the Historic Houses Association and Christie's, in 2013. Plants in the garden include a Greek fir which had been a gift from Joseph Banks, the botanist, in the 1840s.
The World's Original Marmalade Awards & Festival
Founded in 2005 the World's Original Marmalade Awards & Festival held in March each year at Dalemain have become an landmark culinary event. Entries are sent in from all over the world including Taiwan, Japan, Australia, and Lebanon. The event has raised nearly £250,000 over the years for local charity Hospice at Home Carlisle and North Lakeland, and for palliative care both in the UK and overseas.
- Historic England. "Name: Dalemain (1221057)". National Heritage List for England. Retrieved 10 July 2015.
- "The History of Dalemain". The Marmalade Awards. Archived from the original on 2 January 2014. Retrieved 1 January 2014.
- "Dalemain". Visit Cumbria. Retrieved 1 January 2014.
- Norman Moore, ‘Hasell, Elizabeth Julia (1830–1887)’, rev. Richard Smail, Oxford Dictionary of National Biography, Oxford University Press, 2004 accessed 9 Jan 2015
- "Dalemain". Archived from the original on 20 April 2013. Retrieved 1 January 2014.
- "Dalemain House wins Garden of the Year 2013". The Telegraph. 23 March 2013. Retrieved 1 January 2014.
- Garnett, Rachel (12 December 2018). "Marmalade makers raise £22,000 for hospice care in Cumbria". The Westmorland Gazette. Retrieved 15 March 2019.
- "2017 Marmalade Awards WINNERS announced". 18 March 2017. Retrieved 2 August 2017.
- "The Marmalade Awards Launched at the Embassy of Japan". Dalemain. Retrieved 15 March 2019.
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