At JM Loft Conversions, we believe one of the biggest fears homeowners have is the process itself. “Will it be disruptive? Who manages everything? What happens if something goes wrong?” This guide walks you through every stage of the JM process — from your first enquiry to the day you step into your beautiful new room.

Step 1: Your Free JM Home Survey

The process begins with a free, no-obligation home survey. A JM surveyor visits your home, inspects your loft, and discusses your vision and requirements. There is no cost and no commitment involved.

At the survey, JM will:

  • Assess your loft's structural suitability
  • Measure your available head height and floor area
  • Confirm which type of conversion best suits your home
  • Discuss your planning position (Permitted Development or full planning?)
  • Talk through your vision for the space
  • Provide a fixed-price quote within 5 working days

Step 2: Design & Planning Application

Once you accept JM's quote and pay your deposit, JM's in-house architect draws up your approved designs. If your conversion requires planning permission, JM prepares the full planning application and submits it to your local authority.

For Bath & NE Somerset Council submissions, JM's heritage design experience ensures applications are supported with the right design rationale and materials specification.

Step 3: Building Regulations Submission

Separately from planning, a building regulations application is required for all loft conversions. JM prepares full structural and technical drawings and submits to building control. Our structural engineer handles all calculations.

Step 4: Construction

Construction begins once planning and building regs are in place. A dedicated JM site manager is assigned to your project from day one. The build sequence for a typical dormer conversion:

  • Scaffolding erection
  • Felt, batten, and tile removal from work area
  • Steel beam installation
  • New floor joists and structural frame
  • Dormer framing and weatherproofing
  • Window installation
  • Roof tiling and felting complete
  • Scaffolding down (if safe to do so)

Step 5: First Fix & Second Fix

First fix covers the structural and service rough-ins: electrical wiring, plumbing rough-in, and stud wall construction. Second fix completes the interior: plastering, electrical fittings, plumbing completion, tiling, joinery, and decoration.

Step 6: JM Handover & Aftercare

Your JM project manager walks you through the completed conversion at handover. We conduct a full snagging list before handover — JM doesn't leave until every item is resolved. Your 10-year JM guarantee begins from handover day.

To begin your JM loft conversion journey, book your free home survey → and see all JM loft conversion services →