The 3 Motilal Nehru Road bungalow was all decked up to welcome its new occupant.
The former Prime minister was accompanied by his wife Gursharan Kaur when he checked into the house after attending the swearing-in ceremony of Modi and his cabinet at the Rashtrapati Bhavan.
All of his belongings had already been shifted to his new address from the 7, Race Course Road residence where he stayed during his stint at the helm of two successive terms of UPA government.
Earlier, the four-bedroom bungalow was the official residence of Delhi Chief Minister Sheila Dikshit who vacated it after her party's loss in the Delhi Assembly elections.
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Several security features have also been added to the bungalow including a new sentry post at the main entrance and the height of the periphery walls have also been increased as per the specifications provided by Special Protection Group (SPG).
With the allotment of a Lutyen's bungalow, Singh and his wife would be entitled to occupy the house for their lifetime.
The bungalow is home to about 40 full-grown trees, including peepul, arjun, goolar, marorfalli, jamun, neem, mango and seemal, which shelter about 60 species of birds and mammals.
The sprawling lawns of the property also provide shelter to a sizeable number of bats.
"Although no count has been taken, the bats could number more than 200," said a senior CPWD official who was involved in getting the house ready for Singh and his family.