Flat & HMO conversion steels · Johnstone
Flat & HMO conversion steels in Johnstone
Steelwork, approvals and making good for flat & HMO conversion steels in Johnstone and nearby.
- Price fixed in writing once scope is agreed
- Building warrant arranged
- Temporary works and making good included
- Free survey visit
- Engineer's calculations arranged
- Building control handled
- Fixed written price once scope is agreed
- England, Wales, mainland Scotland & NI
About our flat & HMO conversion steels service in Johnstone
For homes in Johnstone and the PA3, PA5, PA6, PA9 and PA10 districts, we handle flat & HMO conversion steels from survey to sign-off. We also cover the surrounding towns and villages in Renfrewshire. The beam is sized by a structural engineer and inspected before it is boxed in.
Turning a large house into flats or an HMO rarely leaves every wall where it was. Rooms are split and joined, kitchens and bathrooms appear on upper floors, and new stairs or corridors are formed. Each time a load-bearing wall moves, steel usually takes its place, and it has to suit the fire and sound standards of a building shared by several households.
What to expect
- Conversions add kitchens and bathrooms upstairs, so soil pipes, water supplies and extract ducts need routes through the structure. Steel and joist positions are coordinated with these runs, and steel should never be drilled or notched on site without the engineer's approval.
- Separating floors and walls also have to meet sound insulation standards. Steel connections and boxing are detailed so they do not leave gaps or rigid paths for noise, and sound testing near completion checks that the separating construction performs.
- Floors and walls between flats must resist the spread of fire, and steel holding up those floors needs protection to match. Where a beam passes through a separating wall or floor, the gaps around it are fire-stopped so the separation stays continuous.
- A conversion to flats or an HMO may need planning permission for the change of use, depending on the scheme, its size and any local restrictions. Checking the planning position before design work begins avoids redesigning the layout and its steel later.
- Large Victorian and Edwardian houses are popular for conversion, but they bring timber lintels, chimney breasts, lime mortar and joists notched for old services. These are uncovered early so the engineer can account for them before any steel is ordered.
Four stages, one team
Free visit
A short visit to Johnstone to see the job, agree what you want and check the bearings, floors and services that affect the design.
Calculations
The engineer's calculations and a simple drawing are prepared for your opening and shared with you before anything is ordered.
Building warrant
A building warrant is applied for from Renfrewshire Council, and work starts only once the warrant has been granted.
Steel in, made good
On site we prop, open up, fit and pack the steel, then fire protect, box in and plaster once the inspection is done.
What do flat & HMO conversion steels cost in Johnstone?
As a guide, budget £2,300–£8,200 including VAT for steelwork for a flat or HMO conversion in Johnstone, based on published UK cost guides adjusted for prices in Scotland (-9%).
| Job | Typical guide range | What it usually covers |
|---|---|---|
| Steelwork for a flat or HMO conversion | £2,300–£8,200 | Beams and posts for a revised layout, with approvals; fire and sound separation priced with the conversion |
| Structural calculations for a beam | £230–£680 | Site measure or photos, beam and padstone design and calculations for building standards |
| Building warrant fee | £215–£435 | Statutory fee set by the estimated value of the work: £215 up to £5,000, rising on a sliding scale (fees from 1 April 2026) |
| Load-bearing wall removal with steel beam | £1,800–£4,550 | Typical internal wall up to about 4 m: calculations, building standards, propping, steel, padstones, fitting, fire protection and making good |
Figures include our approximate regional adjustment for prices in Scotland (-9%) and are rounded. How these figures are worked out.
Approvals in Johnstone
In Scotland, structural alterations need a building warrant under the Building (Scotland) Act 2003, and work must not start until the warrant is granted. For Johnstone, warrants are handled by Renfrewshire Council's building standards service. When the work is finished, a completion certificate is submitted and has to be accepted by the council.
Scotland has no Party Wall Act. Work affecting a shared wall is governed by your title deeds and the general law, and in flats by the Tenements (Scotland) Act 2004, so it is sensible to agree the work with neighbours in writing before starting.
Flat & HMO conversion steels in Johnstone: your questions
Who approves flat & HMO conversion steels in Johnstone?
Structural work in Johnstone needs a building warrant from Renfrewshire Council, granted before work starts. We prepare and submit it with the structural engineer's calculations and arrange the inspections, so the completion paperwork follows the job.
How soon can flat & HMO conversion steels start in Johnstone?
Start dates depend on the engineer's calculations, the building warrant and any agreement needed with neighbours. We give you a realistic timetable after the survey and keep you updated as each approval comes through.
Does 5% VAT apply to a flat conversion?
It may. A reduced rate of VAT can apply to some conversion work, such as changing the number of dwellings in a building or converting a house into an HMO, provided the conditions are met. The rules have detail and exceptions, so confirm the position with your accountant before pricing the project on that basis.
What steel beams are needed for a flat conversion?
It depends on how much the layout changes. Typical steelwork includes beams where load-bearing walls are removed, trimmers around new stair openings, and columns or frames where loads have to come down through the building. A structural engineer designs each element from the new layout and the existing structure, and the calculations go to building standards.
Do I need freeholder consent to put a steel beam in my flat?
Usually, yes. If you own a leasehold flat, structural alterations normally need the freeholder's or landlord's written consent under the lease. In Scotland, the title deeds and the Tenements (Scotland) Act 2004 govern work affecting shared parts of the building. We can provide the calculations and drawings needed to support a consent request.
Can I stay at home while the work is done in Johnstone?
Usually, yes. The work area is screened and floors are protected. The rooms either side of the opening are out of action for a few days, and there is some noise and dust while the masonry comes out.