Service area
Areas covered across South West London
InstaGasWorks provides Gas Safe boiler repairs, servicing, installation, emergency plumbing and landlord certificates across South West London, Croydon, Sutton and the Surrey borders. Check your postcode, find your local page, and book an engineer who's genuinely nearby.
The patch is kept deliberately tight around the base on Mitcham Lane, Streatham. That's what makes same-day emergency call-outs and honest arrival times possible, instead of all-day windows.
Check whether your postcode is covered
Enter your postcode for an instant answer, plus a link to your local page with prices and response times.
- Boiler repairs, servicing and installation
- Emergency plumbing and gas call-outs, 24/7
- CP12 landlord gas safety certificates
- Taps, toilets, leaks and general plumbing
Gas Safe registered
Verify on the official register
Rated 5.0 on Google
By customers across the patch
Tight local patch
Everywhere within ~25 min of base
Fixed prices
Agreed before any work starts
Find your area
Every area below has its own local page with services, prices, response times and answers to the questions asked most there.
01South West London
10 areasThe heart of the patch: Victorian terraces, period conversions and riverside flats across the SW postcodes. Same-day call-outs are the norm here.
SW11Emergency plumbing, boiler repairs and gas work.
Services in Battersea
SW15Emergency plumbing, boiler repairs and gas work.
Services in Putney
SW12Emergency plumbing, boiler servicing and gas work.
Services in Balham
SW17Emergency plumbing, boiler repairs and gas work.
Services in Tooting
SW18Emergency plumbing, boiler repairs and gas work.
Services in Wandsworth
SW4Emergency plumbing, boiler repairs and gas work.
Services in Clapham
SW16Emergency plumbing, boiler repairs and gas work.
Services in Streatham
SW19 SW20Emergency plumbing, boiler repairs and gas work.
Services in Wimbledon
SW19Emergency plumbing, boiler repairs and gas work.
Services in Colliers Wood
SW16Emergency plumbing, boiler repairs and gas work.
Services in Norbury02Croydon & South East
4 areasFrom Dulwich's period homes down to central Croydon, Thornton Heath and Mitcham - busy boiler-repair and landlord territory, visited every week.
SE21 SE22Emergency plumbing, boiler repairs and gas work.
Services in Dulwich
CR0Emergency plumbing, boiler repairs and gas work.
Services in Croydon
CR7Emergency plumbing, boiler repairs and gas work.
Services in Thornton Heath
CR4Emergency plumbing, boiler repairs and gas work.
Services in Mitcham03Sutton & Surrey borders
4 areasThe SM postcodes: Sutton, Carshalton, Wallington and Morden. Inter-war family homes where annual boiler servicing genuinely pays for itself.
SM4Emergency plumbing, boiler repairs and gas work.
Services in Morden
SM1Boiler servicing, boiler repairs and gas work.
Services in Sutton
SM5Emergency plumbing, boiler repairs and gas work.
Services in Carshalton
SM6Emergency plumbing, boiler repairs and gas work.
Services in WallingtonService area
Your gas and heating engineer across South West London
InstaGasWorks covers a tight patch, from Battersea and Putney, down through Wimbledon and Streatham, to Croydon and Sutton. Staying local is what makes same-day breakdown visits possible. Pick a borough to see what's covered.
Wandsworth · Battersea · Putney · Balham · Tooting
Wimbledon · Colliers Wood · Mitcham · Morden
Not on the list? Call 0208 226 0205 and you'll hear straight away whether your address is within reach.
Coverage questions, answered
Which postcodes do you cover?
The regular service area covers SW4, SW11, SW12, SW15, SW16, SW17, SW18, SW19 and SW20 in South West London; SE21 and SE22 around Dulwich; CR0, CR4 and CR7 for Croydon, Mitcham and Thornton Heath; and SM1, SM4, SM5 and SM6 for Sutton, Morden, Carshalton and Wallington.
Do you charge extra for travel?
No. The patch is kept deliberately tight (everywhere covered is within about 25 minutes of the Streatham base), so fixed prices are the same across the whole service area, with no travel surcharges.
What if my postcode isn't covered?
Call anyway on 0208 226 0205. InstaGasWorks regularly travels beyond the usual patch for larger jobs like boiler installations and bathroom refits, and if your address genuinely can't be reached, you'll be told straight away rather than have your time wasted.
Where is InstaGasWorks based?
At 37 Mitcham Lane, Streatham, SW16 6LJ, which is why response times across Streatham, Tooting, Norbury, Mitcham and Balham are some of the fastest in South West London.
In the area and need an engineer?
Same-day availability across South West London, Croydon, Sutton and the Surrey borders. Free, no-obligation quotes on bigger jobs.