I've got to build regs full plans approval for a 31m2 single storey orangery (a 5500 x 4500 area plus a 3000 x 1600 return .
It has a lot of glass - a flat roof, a glass lantern, almost two glass walls and three decent opening windows on the longest wall. I'm using Express Bifold for all that, they've quoted me £15k for supply and fit.
The job requires propping and removing the corner (3000 x 3000) of an existing single story extension.
Apart from that it is basically two big brick/block pillars and a long wall where the conventional windows fit. 152 x 152 steels on three sides and 2 steels to hold up the old extension corner.
I'd like to get an idea an idea of what would be a fair builder's price. The costing guides list projects by 'standard, 'good' or 'excellent'. I only really need a standard finish (and I'll be doing painting and flooring myself). But all that glass, how do I account for it in a costing?
The lantern roof upstand and flashings obviously take a lot of extra time, and I'd like it finished using a single ply membrane like Sarnafil.
Using the cost guide, a 31m2 single storey building (South East) built to standard quality works out at £1,104/m2, £34,224 total (plus VAT), but it is going to be very high to pay that and then 15k for the glass on top!
I guess I'm trying to get a handle on how one costs the substitution of glass for all the brickwork in a conventional build, or perhaps someone has actual experience of the m2 costs of this type of structure?
It has a lot of glass - a flat roof, a glass lantern, almost two glass walls and three decent opening windows on the longest wall. I'm using Express Bifold for all that, they've quoted me £15k for supply and fit.
The job requires propping and removing the corner (3000 x 3000) of an existing single story extension.
Apart from that it is basically two big brick/block pillars and a long wall where the conventional windows fit. 152 x 152 steels on three sides and 2 steels to hold up the old extension corner.
I'd like to get an idea an idea of what would be a fair builder's price. The costing guides list projects by 'standard, 'good' or 'excellent'. I only really need a standard finish (and I'll be doing painting and flooring myself). But all that glass, how do I account for it in a costing?
The lantern roof upstand and flashings obviously take a lot of extra time, and I'd like it finished using a single ply membrane like Sarnafil.
Using the cost guide, a 31m2 single storey building (South East) built to standard quality works out at £1,104/m2, £34,224 total (plus VAT), but it is going to be very high to pay that and then 15k for the glass on top!
I guess I'm trying to get a handle on how one costs the substitution of glass for all the brickwork in a conventional build, or perhaps someone has actual experience of the m2 costs of this type of structure?
