Would properties with a ground floor have a sewage backflow risk?

What kind of accommodation do you currently live in? Is it an apartment above ground floor?

Any house is going to have a ground floor so they will all come with ground floor issues.

Most of them are nothing to worry about really. The main one for me going from a top floor apartment to a house was far easier access for break ins.

Nobody I have ever met or spoken to ever mentioned this as something to think about when buying a house.

Any property you ever buy or rent can have issues. It's why building and contents insurance exist.

Almost all properties have a ground floor and all have a sewage backflow risk. All properties have a leak risk from their roofs, water, heating and drainage systems.

There are three main sources of flooding - rain events (pluvial), riverine (fluvial) flooding and coastal flooding.

Rain events can happen anywhere, but associated floods tend to happen on flat ground and/or in flow-lying areas, where there is too many paved areas and nowhere for the water to go. Localised flooding can happen in Dublin, due to blocked drains and / or exceptionally heavy / prolonged rain. Otherwise, are you potentially at the same level as a river or the sea (noting that levels vary)? Flooding can happen along the Liffey, Tolka and Dodder and along their tributaries. Some places like Clontarf and Sandymount can suffer coastal flooding. Have a look at https://www.floodinfo.ie/map/floodmaps/

Sewage problems tend to be very localised, e.g. people flushing sanitary wipes, etc. and blocking the sewer or sewers being damaged / undermined by construction work. Terraced housing can often have shared sewers at the back of the houses. Occasionally, after a storm, the sewer system can be overwhelmed with rain water and untreated sewage ends up in the sea.

The main pests in Ireland are rats, mice, pigeons, seagulls and some insects - all of these can be avoided if they are deprived of food sources