Attic Conversion
Another term for loft conversion. In the UK, most homeowners use loft conversion when discussing roof space projects.
Cambridge Homeowner Resource
Loft Conversion Glossary for Cambridge Homeowners
This glossary explains the terms you will see when planning a loft conversion in Cambridge. It is written in plain English so you can make informed decisions on design, planning, regulations and cost.
Quick Start
If you are new to loft conversions, begin with your local service page and area page, then explore the guides below. These pages are connected so you can move from basic definitions to planning, cost and company selection.
A
B
Building Regulations
Mandatory technical standards for structural strength, fire safety, insulation, stairs and electrics.
External reference: UK building regulations approval.
Building Control Sign Off
Final approval confirming the works comply with regulations. This is important for resale and mortgage checks.
D
Dormer Loft Conversion
A roof extension that creates extra headroom and floor area, often the most practical option in Cambridge terraces.
Related internal guide: Cambridge loft conversion costs by type.
Design and Access Statement
A planning document sometimes required in sensitive locations, such as conservation areas.
H
Head Height
Usable vertical clearance in the loft. Low head height affects design choices and staircase placement.
Hip to Gable
A conversion that straightens a sloping side roof into a vertical wall to increase internal space.
L
Loft Conversion Specialist
A contractor focused on roof space conversions, planning support and structural delivery.
Compare firms here: Choosing a loft conversion company in Cambridge.
Lawful Development Certificate
A certificate proving your project was lawful under permitted development rules, useful during property sale.
M
Mansard Conversion
A larger structural roof alteration that creates significant additional space but usually needs planning permission.
P
Permitted Development
Rights that allow certain loft works without full planning permission, subject to limits and conditions.
External reference: Planning Portal loft conversion rules.
Party Wall Notice
A legal notice served to neighbours when works affect shared walls in terraced and semi detached properties.
External reference: Party wall process on GOV.UK.
R
RSJ (Rolled Steel Joist)
A steel beam used to support altered roof loads and floor structures during loft conversion works.
Rooflight Conversion
Often called a Velux conversion. It uses roof windows without major external roof extension.
V
Velux Loft Conversion
A simpler conversion using roof windows, often lower cost than dormer options.
See real examples in our loft conversion gallery.
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