McHugh & Co sold 85% of the lots on offer at its recent sale, raising £21.7m.
Of 66 lots offered, 56 sold with 49 in the room and seven prior.
James McHugh, of McHugh & Co, said: “It was one of the busiest rooms we have seen for some time. There was active bidding on the majority of lots with properties selling for well over guide prices.
“The result clearly demonstrates how investors, developers and owner-occupiers wish to invest in bricks and mortar instead of money in the bank earning very little interest,” he said.
The highest price achieved on the day was for a three-floor terraced house in West Hampstead, NW6, which sold for £1.4m off a guide price of £1.1m.
Other highlights included a bungalow on a plot of land in Streatham, SW16, which sold for nearly £1.2m off a guide price of £900,000.
A plot of land in Muswell Hill, N10, without planning consent, sold for £359,000 off a guide price of £100,000.
The sale was held at the Montcalm Hotel, W1, on 23 February.