Exactly half of the condominium units at the posh Clarendon development on Stuart Street in Boston are expected to be sold by the end of the week, just another sign to some that the Back Bay is downtown Boston’s most sought-after neighborhood.

The development recently closed on the 50th of 102 total condominium units. The 51st unit is expected to close Friday, according to the project’s sales team. In a market where other high-end condo projects have struggled to sell, The Clarendon’s 50 sales should put them in a good place for future financing and gives prospective buyers more confidence in the property, said a local broker that focuses on the downtown Boston market.

"It’s a big milestone for them," said John Ford, owner of Ford Realty, which focuses on luxury residences. "The key thing is it makes potential buyers feel more comfortable, and it’s less likely that it’ll go into foreclosure. I think this will boost their sales even more and will give a sense of confidence to buyers that are on the fence. And it has a lot to do with location more than anything."

Residences in the 33-story tower, which also contains rental units and a restaurant, have sold at an average of $1,150 a square-foot, according to a press release.

Traveling east on Stuart Street, the condos at the W Boston Hotel have experienced increased interest after the property’s developers filed for bankruptcy protection. Six units are under agreement and set to close this month, and currently nine in total are scheduled to close before summer, said Kevin Ahearn, president of Otis & Ahearn, the firm in charge of marketing the W’s residences. There have been 29 condos out of 123 sold so far at the W, not including those under agreement.

Downtown Crossing’s 45 Province has struggled to sell its condominium units, selling just 29 out of 137 residences, according to Ford.