People who use the Chiltern, LU or LO lines through West Hampstead
have probably noticed a thicket of new buildings rising in the thin
triangular sliver of land between the LU and LO tracks. The only
entrance to the narrow site is on West End Lane, between the LU and LO
station entrances.

The Bing views haven't been updated, which lets us see what the site
looked like before the redevelopment; it looks it was a garage and
some van parking:
https://binged.it/2ij5NOV

Google is more up to date, and shows the construction underway:
https://goo.gl/maps/eV5UiSkgQ1A2

And here are my pictures from this morning:
https://www.flickr.com/photos/reclin...57674337762883

The development will have four retailers on the little square facing
West End Lane and six office units, but the other seven buildings
crammed in behind are all flats, 198 of them.

Reflecting the unmentioned adjacent railway lines, "the windows will
be triple gazed with specialist anti-vibration plates on the
foundation of the buildings. These are new and specialist building
techniques that will ensure minimal noise when the doors and windows
are closed. All flats will have comfort cooling which can be adjusted
above and below the ambient temperature".

From:
http://www.paramount-properties.co.u...ead-square-faq

This is what the developer has to say:
http://www.westhampsteadsquare.com/about

Note the absence of any mention of the railway lines that enclose the
narrow, triangular site. It sounds positively bucolic!

For anyone who's tempted, prices range from about half a million for a
studio flat, to two million quid for a three bedroom unit.