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  • Upstairs reconfiguration vs extension (1.5 storey longhouse)

    Posted by Dottie Ingham on April 20, 2026 at 7:08 pm

    Hi, I’d really appreciate some honest advice as I feel like I’ve hit a wall with our layout.

    We’re a family of 2 adults and 4 children, all with additional needs, so how the space flows and feels day-to-day is really important. We need layouts that are calm, predictable, low-demand and not overly tight or awkward.

    The house is a 1.5 storey Scottish longhouse, so the upstairs is within the roof space rather than a full second storey.

    We’re trying to achieve:

    • 4 good-sized bedrooms upstairs
    • 1 family bathroom that isn’t tiny, and can accommodate both a bath and a separate wet room-style shower (this is essential for mobility reasons)
    • A functional master bedroom (not L-shaped or compromised), as this space always needs to accommodate multiple children and must remain calm, usable and not restricted

    Current constraints:

    • Upstairs is approx 91m² within the roof space
    • The main bathroom is on one side of the house, while the en-suite is positioned more centrally towards the rear (so plumbing isn’t all in one place)
    • Landing is long and narrow (~1.46m wide)
    • Sloped ceilings / head height constraints (typical of 1.5 storey layout)
    • We’ve tried multiple layouts, but anything that improves the bathroom tends to eat into the master bedroom

    Ideas we’ve explored:

    1. Moving the bathroom into the master bedroom
      → Concerned about long soil pipe runs (4m+) and whether this is good practice
    2. Moving the bathroom into the existing en-suite area
      → This leaves a small, awkward L-shaped bedroom
    3. Converting Bedroom 4 into a larger bathroom
      → This works spatially, but reduces us to 3 bedrooms upstairs

    We’re also open to rethinking the downstairs layout (plans attached), including potentially creating a bedroom downstairs if that leads to a better overall solution.

    Due to financial constraints, we can’t afford an extension at this stage, which is why we’re trying to understand whether a reconfiguration within the existing footprint is realistically achievable, or whether an extension is ultimately the only way to properly resolve the layout.

    Key questions:
    – Is it realistically possible to achieve 4 good bedrooms + a practical family bathroom upstairs within this type of 1.5 storey layout, or are we forcing something the house won’t support?

    – Is there a smarter way to reconfigure this (including downstairs) that we’re missing?

    – Or is an extension ultimately the only clean solution to solving this?

    We’re trying to decide whether to:

    • keep reworking the layout
    • accept a compromise
    • or change direction entirely

    Any honest advice from a design or build perspective would be really appreciated.

    Dottie Ingham replied 10 hours, 35 minutes ago 1 Member · 0 Replies
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