What this work involves
An extra storey changes more than the roof. The existing structure, staircase position, escape arrangements and installation routes need to be considered together. Establish what the building can support before settling the design.
- Existing structure and foundation assessment
- Stair opening and usable room layout
- Roof shape and neighbouring buildings
- Facade materials, windows and insulation
- Lifting, scaffolding and temporary weather protection
Use the following design considerations when coordinating this service with a wider project. Agree which parts apply to your request.
Plan when an addition connects to the occupied home.
Which trade-off matters?
A short intensive programme and longer phased work have different effects. Compare temporary facilities, access and quiet periods as well as total duration.
What the drawing needs to explain
Create a phase plan showing work zones, usable rooms and bathroom access. Identify temporarily unavailable facilities and their replacements.
Decide this before construction
Link each order date to the phase needing the component. Before a disruptive transition, check that materials, decisions and temporary facilities are actually available.
Cost factors for this service
Include design, investigations, structural work, the new envelope and internal finishes. Additional strengthening can change the budget.
Bring this to the discussion
Existing plans, photographs of roof and facades, intended rooms and information about earlier alterations.
Questions about the work
Is every flat roof suitable for another floor?
No. The building, its foundation and the rules for the property are decisive. Structural assessment and a location-specific permit check belong in the preparation.
The design situations here illustrate choices; they are not completed projects or a diagnosis of your property.