Structural calculations in Allerton
- Legal requirement
The short answer
Beams, walls removed, loft floors
- Price from
- £300.00
- Time on site
- 1 to 2 hours (initial visit)
What you get
You will receive a detailed report with structural calculations and drawings, signed by a qualified engineer, ready for building control approval.
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When do you need a Structural calculations?
You need these whenever you change the parts of your home that hold weight. The law requires this to ensure your house does not collapse or crack.
- Removing any internal walls
- Adding a home extension
- Planning a loft conversion
- Fitting large bi-fold doors
- Changing a roof type
- Creating new window openings
What happens on the day
An engineer will visit to check how your home is built and where the weight sits. They will measure your rooms and look at how the floors and roof are held up.
- Check wall thickness carefully
- Find load bearing parts
- Inspect the loft space
- Identify floor joist directions
- Take detailed measurements
- Assess foundation strength
How to prepare
- Clear clutter from the loft
- Find your original house plans
- Identify which walls you want removed
- Ensure easy access to all rooms
- Provide copies of any architectural drawings
- Note any existing cracks in walls
- Prepare to lift some floorboards
- Secure any pets in a room
How to improve your result
- Use a qualified structural engineer
- Get calculations before buying materials
- Show the reports to your builder
- Keep copies for your house deeds
- Ask for a summary in plain English
Why it is useful day to day
Having these documents gives you peace of mind that your home is structurally sound. It makes the building process smoother and keeps your investment safe.
- Avoids nasty cracks later
- Speeds up building control
- Saves money on materials
- Helps with future sales
- Protects your home insurance
- Gives builders clear instructions
Why we ask these questions
These calculations answer the technical questions your builder and building control officer will ask. They turn your design ideas into a safe reality.
- How big is the steel beam?
- Is the foundation strong enough?
- Will the ceiling sag?
- Are the walls stable?
- What materials are best?
- Does it meet safety rules?
Frequently asked questions
Often needed alongside
Full architectural service
Concept to completion
- Legal requirement
Planning application
Prepare and submit
Planning consultant
Strategy, appeals, pre-apps
- Legal requirement
Lawful development certificate
Proof works are permitted development
Planning appeal
Appeal a refusal
- Fixed price
Daylight & sunlight report
Impact assessment for planning
- Legal requirement
- Fixed price
Building control inspection
Plans check, inspections, completion certificate
- Legal requirement
- Fixed price
Regularisation certificate
Sign-off for works done without approval


