Mr Singh, 45, who received an OBE for 'services to local government' in the queen's birthday honours list last year, moves to Ealing after four years as chief executive of Luton BC.
Under Mr Singh's leadership Luton helped secure£120m for the introduction of a guided bus system to improve local transport and began a major redevelopment of its town centre.
Luton received several national awards, including the prestigious 'beacon' and 'pathfinder' status, under Mr Singh's leadership, with pioneering business partnerships having been formed with commercial organisations to improve the council's services.
Luton has also been able to develop a coherent long-term vision that was developed with full community involvement which helped transform services to residents.
Mr Singh said: 'Ealing Council has made a commitment to dramatically improve its operations in order to make 'a world of difference' to the diverse community that it serves. This commitment is being backed up by fundamental changes to the organisation's structure and major investment in customer service.
'Successfully leading the council through these changes, as chief executive at Ealing, represents the most exciting management challenge in local government, and one that I am delighted to have the opportunity to tackle myself.
'Much groundwork has already been done, but a great deal of hard work remains. Having already seen the dedication of Ealing's councillors, managers and employees I am sure that together we will be successful.'
Ealing LBC leader John Cudmore said: 'We are delighted to have appointed a chief executive with such an outstanding reputation as Darra.
'We are very excited because Darra has proved he has exceptional leadership qualities and vision that will prove a great benefit to Ealing and its residents. Darra knows there are huge changes taking place in Ealing and he wants to be part of that and be able to drive our change programme forward.'
Mr Singh's appointment means Ealing has now recruited its new five strong corporate board after the previous four person board announced it was leaving to take up other challenges.
Mr Singh will be joined by four new executive directors. They are Shelley Adams, ED for strategy and development; David Archibald, ED for individual customers (education, social services and housing); and Keith Townsend, ED for customer services. An appointment has been made to the post of executive director for finance and business support which will be announced shortly.
Mr Cudmore added: 'The new corporate board we have recruited are of the highest quality and are committed to driving forward the Response programme, winning back our social services star and ensuring that Ealing Council is known as an excellent authority. The future for Ealing Council and its residents is very exciting.'
Mr Singh became a volunteer for one of Newcastle's housing advice centres, then started his career as a housing caseworker on Tyneside. He moved to London in 1984, where he worked for housing charity SHAC and the London Housing Unit. He subsequently became chief executive of Asra Greater London Housing Association and Hexagon Housing Association.
Mr Singh then moved to the Audit Commission as a regional director for the Best Value Inspection Service where he led inspections of local authorities across a range of services.
He has also been involved in the Home Office's community cohesion review team and chaired a national housing practitioner group reporting to the government's influential community cohesion panel. Mr Singh has also recently been involved in a major review of local government finance. He was on the regeneration judging panel for the 2005 LGC Awards.
In a personal message to staff at Luton, Mr Singh said:
'I have thoroughly enjoyed the last four years as chief executive of Luton. The warmth, commitment and hard work of employees across the council has been impressive. Local councils provide vital services. It is all too easy for those who wish to criticise to under-estimate the contribution you make. I would like to personally pay tribute to your hard work. I consider it a privilege to have been able to serve as your chief executive.'