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Programme template

Loft conversion (dormer): typically 8–12 weeks.

Rear dormer loft conversion with new staircase, bedroom and en-suite — the classic suburban value-add.

Durations are typical ranges for a well-run job with normal lead times — actual programmes vary with site conditions, weather and procurement.

Stage-by-stage

  1. Scaffold & site set-up2–3 days
  2. ◆ BC: commencement noticeinspection / milestone
  3. Strip roof section & steels inCrane/steels day is weather-critical3–5 days
  4. ◆ BC: structural steels inspectioninspection / milestone
  5. Dormer structure & weatherproofing5–8 days
  6. Roof covering & windows4–6 days
  7. Floor structure & insulation3–5 days
  8. New staircase installedStaircase joinery lead time 3–6 weeks — order at survey2–3 days
  9. First fix & fire-regulation worksFire doors and mains-linked alarms throughout the escape route5–8 days
  10. Plastering & drying6–10 days
  11. Second fix & en-suite6–10 days
  12. Decoration & carpets4–6 days
  13. Snagging, scaffold down2–4 days
  14. ◆ BC: completion inspectioninspection / milestone

Customise this programme:

Residential

Commercial

Packages

Typical durations for a well-run job — actual programmes vary with site, weather and lead times.

Adjust stage durations
Completed In Progress Upcoming
27 Jul6 Aug17 Aug27 Aug7 Sept
Scaffold & site set-up
0%
BC: commencement notice
Strip roof section & steels in
0%
BC: structural steels inspection
Dormer structure & weatherproofing
0%
Roof covering & windows
0%
Floor structure & insulation
0%
New staircase installed
0%
First fix & fire-regulation works
0%
Plastering & drying
0%
Second fix & en-suite
0%
Decoration & carpets
0%
Snagging, scaffold down
0%
BC: completion inspection

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Single-storey rear extension →Double-storey extension →Wraparound extension →Full house refurbishment →New-build house (single plot) →Small residential development (2–6 plots) →