All 54 construction companies registered in Welwyn Garden City, Sep 2025 to Aug 2026.
Every construction company that registered a Welwyn Garden City address between September 2025 and August 2026, newest first, straight from the Companies House register. Every company number links to its own record there.
| Company | What it does | Registered |
|---|---|---|
| AL8 PLUMBING LTD | Plumbing, heat and air-conditioning installation · AL8 | 17 August 2026 |
| VERTEC ROOFING AND BUILDING LTD | Roofing activities · AL7 | 10 August 2026 |
| JSP COMMERCIAL LTD | Other specialised construction activities n.e.c. · AL8 | 22 July 2026 |
| IGD ELECTRICAL LTD | Electrical installation · AL7 | 20 July 2026 |
| DELTA CLIMATE SYSTEMS LTD | Electrical installation · AL7 | 9 July 2026 |
| WORCESTERHENRY LTD | Development of building projects · AL7 | 9 July 2026 |
| WILLS HVAC SERVICES IRELAND LTD | Electrical installation · AL7 | 9 June 2026 |
| LILY INTERIORS LIMITED | Joinery installation · AL7 | 5 June 2026 |
| FALCON GROUP ENGINEERING LTD | Electrical installation · AL7 | 3 June 2026 |
| KNOCKMORE ELECTRICAL LTD Strike-off proposed | Electrical installation · AL7 | 20 May 2026 |
| CREATIVE DRIVEWAY SOLUTIONS LIMITED | Development of building projects · AL8 | 18 May 2026 |
| GD JONES PLUMBING & HEATING LIMITED | Plumbing, heat and air-conditioning installation · AL7 | 7 May 2026 |
| BLACKSHIRE SERVICES LTD | Electrical installation · AL7 | 6 May 2026 |
| WELWYN BUILDERS LTD | Construction of domestic buildings · AL7 | 28 April 2026 |
| ETON CREST CONSTRUCTION LTD | Other building completion and finishing · AL7 | 21 April 2026 |
| LT AIR CONDITIONING LIMITED | Plumbing, heat and air-conditioning installation · AL8 | 19 April 2026 |
| CHILLCORE REFRIGERATION AND AIR CONDITIONING LTD | Plumbing, heat and air-conditioning installation · AL7 | 16 April 2026 |
| DATCHWORTH HEATING LTD | Plumbing, heat and air-conditioning installation · AL7 | 15 April 2026 |
| MATT ATKINS PROPERTY SOLUTIONS LTD | Development of building projects · AL7 | 14 April 2026 |
| HERTSSPARKY LTD | Construction of commercial buildings · AL8 | 1 April 2026 |
| LOUI GAS SERVICES LTD | Other construction installation · AL7 | 31 March 2026 |
| LOUI PLUMBING SERVICES LTD | Plumbing, heat and air-conditioning installation · AL7 | 29 March 2026 |
| PG MAINTENANCE & EXPORTS LTD | Other building completion and finishing · AL7 | 27 March 2026 |
| SARAH JAMES PLASTERING AND DAMP PROOFING LTD | Floor and wall covering · AL7 | 17 March 2026 |
| VT FLOW PLUMBING & HEATING LTD | Plumbing, heat and air-conditioning installation · AL7 | 17 March 2026 |
| SENTRILINK SECURITY LTD | Electrical installation · AL7 | 16 March 2026 |
| ARG ELECTRICS LTD | Electrical installation · AL7 | 21 February 2026 |
| LITHIUM GRID LIMITED | Electrical installation · AL7 | 18 February 2026 |
| HAVENWOOD LODGE LTD | Other construction installation · AL7 | 16 February 2026 |
| FIRE HORSE DEVELOPMENT LTD | Development of building projects · AL7 | 30 January 2026 |
| ZIMT CONSTRUCTION LTD | Construction of commercial buildings · AL7 | 29 January 2026 |
| BUILD UP LTD | Construction of domestic buildings · AL7 | 28 January 2026 |
| INHOUSE PROPERTY GROUP LIMITED | Development of building projects · AL7 | 26 January 2026 |
| GFR ELECTRICAL LIMITED | Electrical installation · AL7 | 21 January 2026 |
| ADBROOK FIRE PROTECTION LTD | Other construction installation · AL7 | 4 January 2026 |
| EFS BUILDING LTD | Other building completion and finishing · AL7 | 28 December 2025 |
| SINGER PROPERTIES LTD | Development of building projects · AL7 | 14 December 2025 |
| SAFE IN CONSTRUCTION LTD | Construction of domestic buildings · AL7 | 12 December 2025 |
| TOTALFIX MAINTENANCE LTD | Plumbing, heat and air-conditioning installation · AL8 | 12 November 2025 |
| RMLG WOOD ART LTD | Other building completion and finishing · AL7 | 30 October 2025 |
| BROWN DOG BUILDING LTD | Development of building projects · AL7 | 29 October 2025 |
| HARRIS'S LV CABLE JOINTING LTD | Electrical installation · AL7 | 9 October 2025 |
| M SHOPFITTERS LTD | Construction of domestic buildings · AL8 | 8 October 2025 |
| TYLERS AC CONTRACTORS LIMITED | Plumbing, heat and air-conditioning installation · AL7 | 7 October 2025 |
| 1ST WELL LIMITED | Development of building projects · AL7 | 25 September 2025 |
| LUXE STROKES LTD Limited by guarantee | Painting · AL7 | 25 September 2025 |
| QUINTON'S PRECISION PAINTWORKS LTD | Painting · AL8 | 24 September 2025 |
| SMART FK CONSTRUCTION LTD | Construction of commercial buildings · AL7 | 24 September 2025 |
| PRONET INSTALLATIONS LTD | Electrical installation · AL7 | 23 September 2025 |
| CHASE NEW HOMES (WGC) LIMITED | Construction of domestic buildings · AL8 | 19 September 2025 |
| AZAZ CONSTRUCTION LIMITED | Other building completion and finishing · AL7 | 15 September 2025 |
| GIDI LTD | Construction of commercial buildings · AL7 | 15 September 2025 |
| D J M MAINTENANCE LTD Limited by guarantee | Other specialised construction activities n.e.c. · AL8 | 3 September 2025 |
| G & B PROJECT SOLUTIONS LIMITED | Other construction installation · AL7 | 3 September 2025 |
Company names, numbers and incorporation dates come from the Companies House register and are free to reuse under the Open Government Licence. What the register does not carry is a way to contact any of them. That is the part we sell, below.
September was the busiest month.
Monthly registrations of construction companies in Welwyn Garden City. The busiest month was September on 10. The quietest was November on 1.
New construction companies in Welwyn Garden City, by month
Sep 2025 – Aug 2026 · 54 in total
Small numbers move about. At this volume a quiet month and a busy month in the same year is normal, so read the twelve-month total before you read any single month.
How far back it goes.
Construction companies registered to a Welwyn Garden City address by year of incorporation, and this year measured against the same run of months last year.
New construction companies in Welwyn Garden City, by year
2017 to 2026 · 2026 counts January to August only
Older years undercount. The register only holds companies that still exist. Anything formed in an earlier year and since dissolved has dropped off it, so the further back the chart goes the more it undercounts. That alone makes every trade look like it is growing. Some of the rise here is real growth and some of it is simply that recent companies have had less time to close. The long view works through it in full.
How Welwyn Garden City compares.
New construction companies over the last twelve months in the towns closest to Welwyn Garden City on volume. Welwyn Garden City is number 235 of the 415 towns with enough construction registrations for a page.
110 construction companies from August 2026 you can actually contact. £34.50.
4,507 construction companies registered across the UK in Aug 2026. 110 of them have an email address we checked as deliverable and tied to that company: name, number, registered address, directors, website and the contact. The rest are left out, not padded in, and you are not charged for them.
National per trade, Welwyn Garden City and everywhere else; filter by town in the file. Closed months only, so the count you see is the count you get. £0.30 a record, £15 minimum.
Exact record count, the price and a sample row by email. Asking is not ordering.
Not ready to buy? The names alone, without contacts, are on the public register and we give them away: every new construction company in the UK in the last 30 days (4,635 to 25 September 2026), as a CSV. Get the free file.