it would depend on an ID of the given specimen ... and its inherent annual growth rate ...

if you can post a pic.. some of the wizards here might find it a joy to name for you ...

there are hundreds of cultivars ...

see link for general overview of conifers... and note the SIZE section

after naming it.. we would then need to know what effect you are going after ... e.g. individual specimens... vs a large presentation using multiple plants ...

whatever you decide... 5 to 8 feet from the foundation of the house is the minimum... unless it is a MINI ... see link ..

ken

Here is a link that might be useful: link