Estate agency giant is one of several industry names flagging up extreme property sales activity within the market.
Read MoreRent controls will leave tenants worse off, landlords warn London Mayor
Comments by NRLA come as Sadiq Khan launches his bid for another term in office, including a promise to introduce rent controls.
Read MoreMarch boomed and so will the summer months, says RICS report
Agents say Chancellor's decision to extend Stamp Duty holiday saw sales, appraisals and buyer enquiries increase last month.
Read MoreRightmove’s record-breaker: over 6,000 visits by homebuyers every minute
Property portal sees unprecedented activity as extended Stamp Duty holiday creates home-buying frenzy.
Read MoreHelp to Buy scheme changes ‘will mean 25% drop in number of eligible homes’
New price caps mean that 80% of four-bed homes will be too expensive, with the North hardest hit, according to Hamptons.
Read MoreMinimum energy rating increase for rental sector ‘will lead to housing shortage’
Government move has not been thought through, says The Lettings Industry Council, as industry body calls for phased approach.
Read MoreNRLA backs MPs’ call for urgent action to tackle rent debt crisis
Landlords' association backs call by MPs for government to come up with plan to deal with Covid rent arrears crisis.
Read MoreBrighton tops list of most profitable buy-to-let locations
Recent research reveals where landlords can potentially make the most profit from buy-to-let property, and Brighton ranks top.
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