David,
Probably in homes that they would help build.

Only if others are denied homes David.
There was a huge shortage of housing before the current wave of mass immigration began, and it has worsened every year under every government because homes can not be built at that rate.
Likewise provision of services for a whole new city every year.

We used to manage without mass immigration.
Other countries like Japan and Poland manage with almost none.
Who benefits? Employers especially government from a supply of pre-trained undemanding labour, and landlords.
Who suffers? Those poor sods at the sharp end competing for jobs while wages fall, rents are driven upwards, and their schools and hospitals suffer overcrowding.

If they complain, they are racists.
Labour won back many such people from UKIP, but the latest policy could drive them all back again.