I need to have a 1.5 line spacing within my document but without some parts like the TOC, title page etc.

When I use this command to set the line spacing to 1.5:

```
\renewcommand{\baselinestretch}{1.50}\normalsize

```

the documents line spacing is set to 1.5.

How can I exclude some parts of the document from that setting?

Thanks for your help!