Structural alterations across Barnet and Hertfordshire — wall removal, RSJ installation, chimney breast removal, lintel replacement and structural calcs. Always with Building Control sign-off.
Common Structural Jobs
Wall removal between kitchen and dining. The single most common Barnet structural job. RSJ specified by a structural engineer, installed with appropriate padstone bearings, signed off by Building Control. Typical cost £4,000–£8,000.
Chimney breast removal. Lower-floor breast removed, upper-floor (and stack above) supported on a steel "gallows bracket" or independent posts. Or full-stack removal from roof to ground. £3,500–£12,000 depending on scope.
Knock-through into a side return or extension. Larger RSJ, often two — handles both rear and side wall removal at once. £6,000–£14,000.
Lintel replacement. Replacing failed lintels over windows or doors. Usually a one-day job but always needs proper structural assessment first.
Why It Matters
Structural work goes wrong slowly — a wall removal done without a proper steel takes years to manifest, then suddenly your upstairs floor sags or you get cracking around the corner above the kitchen. Get this right the first time.
Every structural alteration needs:
- Structural engineer's calculations (specific to your house)
- Building Control notification or full plans submission
- Inspection during steel install
- Completion sign-off
- Possibly Party Wall agreement (terraced or semi-detached)
Frequently Asked Questions
Do I need an architect for structural work?
An architect isn't always required, but a structural engineer's calculations are mandatory. The builder will engage one as part of the project.
Do I need Building Control?
Yes — any structural alteration needs Building Control notification, an inspection while the steel is in place, and a sign-off certificate on completion.
How long does an RSJ install take?
The steel install itself is typically 2–3 days of work. The wider job — propping, finishing, plastering, decorating — is usually 1–2 weeks.
Will I need to move out?
Usually no — the work is concentrated to one area. Some dust and noise during steel install but the house remains liveable.