Fairview had already been taking earlybird reservations on apartments at the Connect development in The Ridgeway before they officially went on sale at the weekend.
Help to Buy makes the apartments the most affordable way for most people to buy their first home.
Fairview New Homes Sales Director Steven Allenby said: People had been queuing up to make earlybird reservations on the apartments at Connect because there is nothing else like them in Chingford.
The market here has been crying out for new homes and Help to Buy has reinforced this demand.
Our sales teams have sold hundreds of homes under Help to Buy since it launched in April last year and have the expertise to guide buyers through every step. This experience is invaluable, especially to first-time buyers.
With Help to Buy people can purchase a new home with a just 5% deposit and a 75% mortgage. The government supplies the remaining 20% as an equity loan which is interest-free for five years.
Connect is bringing a new lease of life to the where Chingford Municipal Offices once stood. The old town hall will be transformed into luxury apartments in a later phase of the development.
Steven Allenby said: We are delighted with how this development has been received. The site had been vacant for six years so people have welcomed the fact it is being brought back into use.
Nearly all our buyers to date have been local people who were waiting for new homes to become available.
Fairview is building 56 one and two-bedroom apartments at Connect, as well as 18 three and four-bedroom houses.
One-bedroom apartments for sale start at £214,000 and two-bedroom apartments are available from £269,000. Four bedroom houses are also currently on release with prices starting at £495,000. Three-bedroom houses will be released soon.