Building an extension

canhefixit

I am thinking of building an extension to the house, I want to add a further 2 bedrooms with one ensuite and a separate family bathroom.

In regard to trying to figure a rough cost would I apply say €75 per sq ft as you would when building a new house or would that figure be less due to being an extension or more?

Also if I was to consider converting the roof space do I factor the per sq ft price as a guide?

sydthebeat

Usually a lot more because of:

Economies of scale being lost
Access issues
unknowns with any existing house
more site specific problem solving than ' off the shelf' solutions.

canhefixit

sydthebeat wrote: »

Usually a lot more because of:

Economies of scale being lost
Access issues
unknowns with any existing house
more site specific problem solving than ' off the shelf' solutions.

I was kind of thinking as much, how would you suggest I try get a rough cost to see if its viable before I get to far into the process and find that out?

Would an architect be able to give a rough price or a builder?

Cheers

sydthebeat

Both, and add on 10%

Of course, the prices will be related to the design and spec.

muffler

Which are you planning on doing? Building an extension or converting your attic?

canhefixit

muffler wrote: »

Which are you planning on doing? Building an extension or converting your attic?

Both actually...

Looking at putting an extension on my own house and the loft conversion on an old house I also own which is in need of repair...

Have you anything else helpful to add?

muffler

canhefixit wrote: »

Have you anything else helpful to add?

Careful now

kkelliher

canhefixit wrote: »

I am thinking of building an extension to the house, I want to add a further 2 bedrooms with one ensuite and a separate family bathroom.

In regard to trying to figure a rough cost would I apply say €75 per sq ft as you would when building a new house or would that figure be less due to being an extension or more?

Also if I was to consider converting the roof space do I factor the per sq ft price as a guide?

Price depends completly on layout, specification of finishes, end use, structural works etc etc. extensions like most other builds cannot be priced on a per m2 or ft2 price as there are so many variables.

Get a qs to visit you property and put a figure on it base on an indicative layout

canhefixit

Sydthebeat and kkelliher you have both been most helpful.

Many thanks.

paulgalway

For consideration also:-

Last week, these additional General Applications Regulations were introduced by the Health and Safety Authority.

Guide For Home owners

Guide for Contractors and Project Supervisors