There are always pros and cons for it!
Pros are that you will get a chance to target certain type of audience on one particular website. This means you will be able to create more targeted content around the specific type of audience instead of writing web copy keeping multiple audiences in mind.
You can easily target more powerful keywords that tar related to specific niche which is otherwise difficult on a website that convers multiple niches.
As the websites will be more targeted, it will be easier for you to complete within search engine from competitors and rank on the first page for targeted key phrases.
Cons have a list too! It’s not easy to come up with multiple sites as multiple sites means more and more content specific for every niche which can shoot your initial expense like anything.
Multiple websites means multiple SEO campaigns this can again put a huge dent on your initial marketing budget. If there will be one website, there will be one SEO campaign which can lead you towards the conversion in the longer run.
If it’s a local business, you cannot add multiple websites for one business page (I guess) and you cannot create multiple business pages as probably your physical location is the same.
I think the best idea is to see how your audience will react if you come up with multiple websites as compare for having one website for all services. Also what is more beneficial for your brand name. Once you have the answer you can take decisions accordingly.
Hope this helps!