I agree – definitely make the most of Google My Business.
For websites, Odoo is a good free builder (I use it for mine).
They should also keep an eye on Facebook groups where people ask for local help (sometimes called dark social) and post in community groups.
Another option is listing on service sites like Trusted Trader or TaskRabbit (small cost, but can be worth it).
And honestly, just get loads of Google reviews from past clients and post simple before/after pics on a Facebook page. Easy to do and it builds instant trust.
Best,
Francois
Smit Marketing
www.smitmarketing.co.uk