From new openings to replacement joists and supported openings, GS Renovation carries out structural alterations throughout Sidcup's interwar suburban houses. Backed by 30+ years across Bexley and its DA15 streets, we design each change with a structural engineer and see it through building control, so your 1930s home stays sound as it opens up.
Structural alterations for Sidcup homes
The 1930s and interwar houses around Sidcup were built on generous plots, which is why so many owners want to reconfigure rather than move: forming a wide opening between kitchen and dining room, cutting a new doorway through a solid wall, or adding a supported opening for bifold doors at the rear. Each of these changes the way loads travel through the house, so a structural engineer designs the beam or lintel and specifies the padstones before any brick is touched.
We also see plenty of tired original timber in these interwar homes, from bouncing floor joists to notched, over-drilled sections weakened by decades of pipework and cabling. Where joists have sagged or been cut about, we replace or double them up to the engineer's spec, restoring a floor that feels solid underfoot rather than one that flexes every time you cross the room.
Underpinning and building control in DA15
Some DA15 alterations reach down to the foundations. The clay subsoils across parts of Bexley can shrink and heave, and a few of these interwar houses show historic settlement, so where an engineer's investigation calls for it we underpin in carefully sequenced bays to deepen and strengthen the footings before new loads go on. We never rush this; each bay is dug, poured and cured in turn so the house is never left undermined.
Every structural alteration here is notifiable under the Building Regulations, and Bexley Council's building control inspects the propping, the steel or new joists, the padstone bearings and any underpinning before sign-off. This is a Building Regulations process, not a planning one, unless you are altering the exterior of a listed building or a home within a conservation area. We book the inspections and provide your certification.
- Building control applications and certification
- Steel beam and RSJ installation
- Load-bearing wall removal and new openings
- Underpinning and foundation strengthening
- Floor structure, joists and beam replacement
Trusted Structural Alterations in Sidcup
Homeowners across Sidcup trust GS Renovation because we treat every alteration as an engineered job, not a guess. One team handles the engineer's calculations, temporary support, replacement joists or underpinning, padstone bearings and Bexley building control sign-off, with tidy working in your occupied DA15 home and 30+ years of interwar experience behind it.
- Free, no-obligation quotations
- Over 30 years of experience
- Dedicated project management
- Fully insured and guaranteed work
- Building control and planning support
- Clean, tidy and reliable tradespeople