Flat & HMO conversion steels · Derry/Londonderry
Flat & HMO conversion steels in Derry/Londonderry
Flat & HMO conversion steels in Derry/Londonderry, from free survey to completion certificate.
- Price fixed in writing once scope is agreed
- Building control 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 Derry/Londonderry
Derry/Londonderry has a mix of housing, and flat & HMO conversion steels need a slightly different approach in each. The wider Derry City and Strabane area is covered as well. Whatever the age of the property, the steel goes in on proper bearings with temporary support in place throughout.
We supply and install steelwork for landlords, developers and their builders, working from the engineer's design and fitting in with the wider conversion. We arrange structural calculations, handle building control for the structural work or feed into your existing application, and fire protect the steel to the period the scheme requires.
Key points for your project
- Keep the structural calculations, building control completion certificate and fire protection records together in one place. They are needed for signing off the conversion, and buyers, lenders and licensing officers may ask to see them later.
- 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.
- Converting a house into flats is treated as a material change of use for building regulations purposes, so fire safety, sound insulation and other requirements apply across the building, not just to the structural work. The steelwork forms one part of that wider approval.
- In a conversion, walls that carried load are often taken out to form open kitchens or wider corridors, while new partitions go in elsewhere. Each change is checked, because a new stud wall standing on old joists can add load the floor was never designed for.
- 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.
How the job runs in Derry/Londonderry
Free visit
A short visit to Derry/Londonderry 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 control
A full plans application or building notice goes to Derry City and Strabane District Council under the Building Regulations (Northern Ireland) 2012 before work begins.
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.
Guide prices for flat & HMO conversion steels in Derry/Londonderry
As a guide, budget £2,150–£7,750 including VAT for steelwork for a flat or HMO conversion in Derry/Londonderry, based on published UK cost guides adjusted for prices in Northern Ireland (-14%).
| Job | Typical guide range | What it usually covers |
|---|---|---|
| Steelwork for a flat or HMO conversion | £2,150–£7,750 | Beams and posts for a revised layout, with approvals; fire and sound separation priced with the conversion |
| Loft conversion steels | £2,150–£5,150 | Supply and fit of floor and ridge steels on padstones, including lifting into the roof space |
| Building control fees | £220–£560 | Building notice or full plans fee and inspections; varies by council or approver |
| Load-bearing wall removal with steel beam | £1,700–£4,300 | Typical internal wall up to about 4 m: calculations, building control, propping, steel, padstones, fitting, fire protection and making good |
Figures include our approximate regional adjustment for prices in Northern Ireland (-14%) and are rounded. How these figures are worked out.
Building control and neighbours in Derry/Londonderry
In Northern Ireland, structural work comes under the Building Regulations (Northern Ireland) 2012 and is approved by the local council's building control. For Derry/Londonderry that is Derry City and Strabane District Council. We submit a full plans application or building notice before work starts and book the inspections.
Northern Ireland has no Party Wall Act, so there is no statutory notice to serve. Where the steel bears into a shared wall, the title deeds and the general law apply, and agreeing the work with your neighbour in writing first is good practice.
Questions about flat & HMO conversion steels in Derry/Londonderry
Do I need a party wall agreement for flat & HMO conversion steels in Derry/Londonderry?
There is no Party Wall Act in Northern Ireland. Your title deeds and the general law apply instead, so agree the work with your neighbour in writing before it starts.
Do you cover Derry/Londonderry for flat & HMO conversion steels?
Yes. We carry out flat & HMO conversion steels in Derry/Londonderry and the BT47 and BT48 postcode districts. Book a free survey visit and we will check the wall, arrange the engineer's calculations and send an itemised written quote.
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.
Do I need an HMO licence before converting a house?
Possibly. Many HMOs need a licence from the local council, and some areas license smaller HMOs too. Licensing covers room sizes, amenities and fire safety, and it is separate from planning and building regulations. Check the council's requirements early, as they can affect the layout and therefore the steelwork needed.
How long does the steelwork take on a house-to-flats conversion?
Typically one to three weeks on site, depending on how many walls move and how the work is phased. The steel is usually among the first structural stages, so it is programmed early to let partitions, services and fire separation follow. The full conversion takes considerably longer than the steelwork alone.
Do you also work near Derry/Londonderry?
Yes. We also cover nearby towns including Strabane and Limavady.