Addiscombe Builders | GSMS Construction Ltd (CR0) Local Construction Services in Addiscombe – GSMS Construction Ltd GSMS Construction Ltd: Your Local Builders in Addiscombe CR0 Professional Builders Addiscombe | GSMS Construction Ltd CR0
Looking for trusted local builders in Addiscombe? GSMS Construction Ltd is a VAT-registered building company delivering high-quality house extensions, loft conversions, full refurbishments, basement conversions, and structural work across Addiscombe (CR0) and the surrounding areas..
We specialise in working with Addiscombe’s Victorian and Edwardian terraces as well as inter-war properties. Our directly employed in-house team handles every project from start to finish — no subcontractors for core trades, no middlemen, and clear fixed-price contracts.
Why Homeowners Choose GSMS as Local Builders in Addiscombe
Addiscombe’s housing stock — particularly streets such as Parkview Road, Everton Road, Sundridge Road, Claremont Road, Sherwood Road, Bingham Road, Compton Road, Ashburton Road and Northampton Road — consists largely of pre-1919 properties with solid masonry walls, cut-timber roofs and relatively shallow foundations. These homes often require careful structural solutions when extended or converted.
GSMS Construction Ltd stands out because we offer:
- Fixed-price contracts — The price we agree after the site survey is the price you pay for the agreed scope
- Fully in-house team — Groundworks, structural work, brickwork and finishing carried out by our own operatives
- In-house RC Frame and formwork — A rare capability among local builders in Addiscombe
- VAT registered — VAT No. 429761270
- Local knowledge — Regular work across CR0, including conservation areas and streets with Article 4 directions
- Free site surveys — Honest assessment before any commitment
Building Services by Local Builders in Addiscombe
House Extensions in Addiscombe
We design and build single-storey rear extensions, double-storey side and rear extensions, L-shaped wraparound extensions, and full rear extensions. We manage structural calculations, Building Regulations, party wall agreements, and planning applications where required.
Loft Conversions in Addiscombe
- Dormer loft conversions (maximising floor space and light)
- Hip-to-gable conversions (ideal for semi-detached properties)
- Velux / rooflight conversions (planning-friendly option)
Every loft conversion includes a new staircase, structural steelwork, insulation to current Part L standards, fire-rated boarding, and full electrical work.
Basement Conversions Local Builders in Addiscombe
Victorian foundations in Addiscombe are often shallow. Our in-house RC Frame team designs and pours reinforced concrete retaining structures, tanking systems and underpinned footings — work that most local builders subcontract at higher cost and greater risk.
Full House Refurbishments Local Builders in Addiscombe
Complete internal and external renovations, including new roofing, rewiring, replumbing, structural openings, and full reconfiguration under a single fixed-price contract.
Kitchen & Bathroom Renovations
Standalone projects or as part of larger schemes. We handle structural alterations (load-bearing wall removal, soil stack relocation) as well as full fit-out.
Orangeries & Garden Rooms
A popular planning-light way to add usable space. Many fall under Permitted Development rights.
Groundworks & RC Frame Construction
Our standout capability. We deliver groundworks, pile caps, reinforced concrete slabs, underpinning, retaining walls and raft foundations using our own plant fleet and directly employed operatives.
Conservation Areas and Article 4 Directions in Addiscombe
Parts of Addiscombe fall within conservation areas designated by the London Borough of Croydon, and some streets have Article 4 directions that remove certain Permitted Development rights.
We check your property’s status during the free site survey and confirm whether your project can proceed under Permitted Development or requires a full planning application.
2026 Building Cost Guide – Addiscombe
| Project Type | Typical Cost Range (2026) |
|---|---|
| Single-storey rear extension | £28,000 – £55,000 |
| Double-storey extension | £55,000 – £110,000 |
| Wraparound (L-shaped) extension | £60,000 – £110,000 |
| Dormer loft conversion | £38,000 – £68,000 |
| Hip-to-gable loft conversion | £45,000 – £75,000 |
| Velux / rooflight loft conversion | £22,000 – £38,000 |
| Full house refurbishment | £35,000 – £95,000 |
All quotations from GSMS are fixed-price. Planning, structural engineer and party wall fees are additional unless included in a managed package.
How We Work – The GSMS Fixed-Price Process
- Free Site Survey — We visit your property, assess constraints (party walls, conservation status, ground conditions) and discuss your brief.
- Detailed Proposal — Clear scope and fixed-price quotation.
- Fixed-Price Contract — One agreed price for the stated scope of work.
- Build Phase — Our in-house team manages the project with one point of contact.
- Handover — All snagging resolved, Building Regulations signed off, and full documentation provided.
Areas We Cover
Addiscombe (CR0), Shirley, East Croydon, South Croydon, Woodside, SE25, Thornton Heath (CR7), and surrounding postcodes.
Frequently Asked Questions – Local Builders in Addiscombe
How much does a house extension cost in Addiscombe in 2026? A single-storey rear extension typically costs £28,000–£55,000. Double-storey extensions range from £55,000–£110,000. We provide fixed-price contracts.
Do I need planning permission for an extension in Addiscombe? Not always. Many projects qualify as Permitted Development, but conservation areas and Article 4 directions can change this. We check free of charge at the site survey.
What is the best loft conversion for a Victorian terrace in Addiscombe? A rear dormer loft conversion usually maximises usable space and head height while remaining planning-friendly in many cases.
Can you handle RC Frame and structural concrete work? Yes. We have our own in-house RC Frame and formwork team — a capability most local builders subcontract.
Are you VAT registered? Yes. VAT number 429761270.
Do you work in SE25 and nearby areas? Yes. We regularly work across CR0 and SE25, including East Croydon, South Croydon, Shirley and Woodside.
Get a Free Site Survey from Local Builders in Addiscombe
GSMS Construction Ltd delivers professional, transparent building services across Addiscombe with fixed-price contracts, an in-house team, and genuine structural capability.
📞 Call 07717 790273 or 07453 292996 📧 Email: info@gsmsconstructionltd.co.uk 🌐 Website: gsmsconstructionltd.co.uk
Book your free site survey today and receive a clear, fixed-price quotation tailored to your project in Addiscombe.