A loft conversion changes two floors. The new room gets most of the attention, but the staircase can also take space from a bedroom, alter the landing or affect how you move through the floor below. Use these three checks before settling on a dormer or rooflight layout.
Mark what you want to keep on the floor below
Take an existing floor plan and mark bedroom doors, built-in cupboards and the route across the landing. If you only have estate-agent plans, use them to explain your priorities. A measured survey can establish the dimensions for design work. Take a photo looking both ways along the landing so the relationship between doors is clear.
Look at the staircase in section
A floor plan shows where a stair starts and ends. A section, which is a vertical cut through the house, shows how the stair rises in relation to the roof slope and the floor above. Ask to see both before deciding where the loft entrance will go. The rear extension and dormer drawing case study shows how plans, elevations and a section tell different parts of the same story.
Try the loft layout with the stair in place
Sketch where a bed, desk or storage might go, then trace the route from the top of the stairs to each area. Note where the roof slopes and which parts of the layout you expect to use standing up. If the first option takes too much space from a room downstairs, flag that while the layout is still being developed.
What to send for a loft drawing quote
Send your postcode, photos of the existing stair and landing, any available floor plans, and a sentence on what the loft needs to do. Mention any room or cupboard downstairs you want to keep. Read about loft conversion planning drawings, check guide fees or request a quote. Where structural input is required, commission it separately from a structural engineer.

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