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lowering attic floor - how and cost

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  • 24-11-2013 11:10pm
    #1
    slipstream
    Registered Users Posts: 199 ✭✭


    Hiya,

    We are sale agreed on a detached bungalow and we hope to turn the attic into habitable bedrooms with a rear facing dormer.

    However, the ridge line is quite low(<6m above FFL) and cannot be raised significantly (max 125mm) due to local planning restrictions.

    There are about 70 houses in the area with exactly the same layout and based on local planning applications we can see that some neighbours have dropped the attic floor level 400 - 500mm in order to create a habitable space in the attic.

    We already knew we would likely need to replace the roof in any case.

    Could anyone give me an rough idea of what extra work and cost would be involved in dropping the ceiling?

    The roof is about 100 square meters and is hipped.

    Thank you for your help,

    Slip


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    #2
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,140 Mod ✭✭✭✭BryanF


    slipstream wrote: »
    1. we can see that some neighbours have dropped the attic floor level 400 - 500mm in order to create a habitable space in the attic.
    2. Could anyone give me an rough idea of what extra work and cost would be involved in dropping the ceiling?
    1. how do you know this?
    2. what did your neighbors do?
    3. what did it cost them?
    4. what is the ground floor to ceiling height currently?
    5. please factor in a structural engineers report no mater what way you approach this


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    #3
    slipstream
    Registered Users Posts: 199 ✭✭slipstream


    hi bryanf,

    thanks for getting back to me.

    firstly note that i do plan using an arch/arch tech/structural engineer etc.

    however, i wanted to get an idea of the additional complexities and cost and involved in lowering the attic floor as i havent been able to find out much about doing this online. the closest i've found is the use of tie-backs in one and a half storey buildings in the homebond house builders manual.
    slipstream wrote: »
    we can see that some neighbours have dropped the attic floor level 400 - 500mm in order to create a habitable space in the attic.
    BryanF wrote: »
    how do you know this?

    in some cases the planning applications have included this information in the application details and in their sections.
    BryanF wrote: »
    what did your neighbors do?
    what did it cost them?
    we do plan on talking to the neighbours but wanted a rough idea of what was involved first to see if this was a viable and affordable option.
    BryanF wrote: »
    what is the ground floor to ceiling height currently?
    2.85m.

    thanks again for your help

    colm


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