No just planning costs. House is 85 sq m and extension would be 30 sq manything between € 60,000 and € 600,000 - this is a question that no one could answer with the level of detail given
I believe I do. Thanks for info.To apply for planning, few hundred varying depending on the county council, to get plans drawn up for the planning again very dependent on how much work needs doing. 15 odd yrs ago I paid 1,500 for plans for an extension to my fathers house, the whole original house has to be drawn out again which adds to the cost rather than just submitting the plan for the extension bit. To build it then who knows these days!
Do you definitely need planning?