I am curious what do pinsters think are the costs to build a housing estate (100 x 1200 sq ft semi D to allow for economies of scale) in Dublin?
Build costs to current Dublin building regulations and labour rates (nothing fancy basic fittings)
Professional fees (planning permission)
Professional fees (building supervision)
Ground works, roads, provision of electric, sewerage, telephone, cable, etc
Social and affordable housing provision
Legals for land purchase and sub division of site
Legals for selling the properties
Fit out of show house
Marketing and advertising costs
Estate agent fees
Plus VAT on all the above @ 13.5%
How many houses in the development?
Many of your costs become pretty trivial once you're building anything of scale (e.g. professional fees for the planning permission: I don't know what they are for a housing estate, but I do know what they are for much more contentious projects going to ABP with oral hearing and impinging on SACs, which I would confidently take as an upper bound on the costs associated with a residential development).
Also, profit margin for the developer is not a cost.