We brought in a landscape architect (2019/2020), was about €800 but worth every penny. She came up with things we (or some of the landscape companies we spoke with) wouldn’t have considered, and the end result is so much better.
Mid terraced house, D5, back garden is about 6.5m width and 20m length (so 130 sqm / 1400 sqft), with somewhat limited access through a small side passage.
Having said the, the landscape we eventually found did provide some good input on where we can save a bit of money by simplifying things.
We had a what I would call a healthy 35K budget, to include things like an outdoor kitchen, pergola, some mature plantings / trees, fencing, etc.
About 35sqm of paved patio, some steps, walls, firepit, lightning, water, etc.
Finding a landscaping company to do the job was painful, even back in 2019. We good quite a few "eff off" quotes in the 70K / 80K range.
(Like: 10K for cleaning out the old stuff - 5 people for 2 weeks etc.; it was in fact one day work for 2 people)
The landscape company we used did not survive the covid lockdown phase, he is no longer doing that type of work so can't recommend him anymore. Found them when I was driving to work and got the contact number from the back of his van.
The Landscape architect is Clare from
Willow Garden Designs.
Good luck. Finding good tradesmen (with right price/value ratio) has always been tricky, but even more so these days. The amount of companies that didn't show up, or never bothered to send a quote, or were just talking the proverbial, was something else even 5 years ago. I daresay this hasn't improved from the specialised companies.
If you are 'only' looking for specific jobs (ie, get a new shed, lay down the fake grass, patio) you might be able to get those things individually hopefully easily enough.