£100m+ new BTR entrant into London – React News

Mayfair Private Office has advised on the Clapham element of a £100m+ London build-to-rent transaction, forming part of a wider investment by US asset manager Principal Asset Management into the capital’s residential rental market.

Principal Asset Management acquired two residential assets in south-west London, comprising developments in Earlsfield and Clapham, reflecting continued institutional investor demand for high-quality rental housing in well-connected London locations. 

The Clapham acquisition comprises a 66-unit residential building at Clapham Park, which reached practical completion in November 2025. The building forms part of the wider Clapham Park regeneration scheme, a major 2,500-home development being delivered through a joint venture between Countryside Partnerships and Metropolitan Thames Valley Housing. 

Mayfair Private Office acted as advisor to the Countryside Partnerships and Metropolitan Thames Valley Housing joint venture on the disposal of the Clapham Park asset.

The wider transaction also includes the forward-funding of 130 residential units at King George’s Gate in Earlsfield, part of a mixed-tenure development being delivered by Taylor Wimpey and scheduled for completion in 2027. 

The transaction was widely covered in the property press, including React News, which highlighted the broader £100m+ investment across the two south-west London assets. You can read the coverage here: React News coverage of the transaction.

This transaction reflects Mayfair Private Office’s growing role in advising PLC housebuilders and development partners on institutional residential disposals, helping unlock capital through targeted engagement with global investors active in the build-to-rent sector. By leveraging a focused investor network and a highly discreet execution process, the firm continues to deliver outcomes for clients where traditional agency processes have struggled to achieve the same level of certainty, pricing and speed.

The deal highlights the continued depth of investor demand for London build-to-rent assets, supported by strong rental fundamentals, limited supply of new homes and the sector’s ability to deliver stable long-term income.