Compare quotes from multiple verified Streatham plumbers
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Booking a boiler service in Streatham? Every engineer listed here is checked before they go live, so you can compare on trust rather than guesswork.
✅ Checked before listing — identity, insurance, trading presence, Gas Safe (where relevant).
✅ Workmanship guarantee badges on listings — 1, 3, 6 or 12 months
⚠️ Smell gas? Leave the property and call the National Gas Emergency Service free on 0800 111 999 from outside (24h). A poorly running gas appliance can also produce carbon monoxide, which you can’t smell — gas-safety steps & CO signs ↓.
Contact verified boiler engineers in Streatham ↓
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Coverage: Streatham and the wider SW16 area, including the High Road and town centre, Streatham Hill, Streatham Common, Streatham Vale and Streatham Wells.
What this covers: annual and manufacturer-schedule servicing of gas boilers — combustion and safety checks, controls, and a system inhibitor check. For a boiler that has stopped working, see Boiler Repair in Streatham; for a replacement, Boiler Installation in Streatham.
Costs: most Streatham boiler services fall in a modest fixed-fee range — see What a service costs.
Availability: listed engineers set their own hours; many offer routine and priority slots.
Service, safety check or warranty visit — what a Streatham boiler service actually is
These three things are often confused, and the distinction matters for owner-occupiers, private landlords and residents whose boiler or heating is controlled by a council, housing association or block operator.
A service is manufacturer-led preventive maintenance. The engineer should review the appliance history, recurring faults and previous service record, visually inspect the appliance, flue and ventilation before firing it, and then carry out the checks and tests required for that make and model. Depending on the instructions and condition, this may include gas-rate or working-pressure checks, combustion analysis, examination of seals and flue integrity, condensate-trap and discharge inspection, controls and safety-device tests, and cleaning or component removal where the manufacturer requires it.9 The service report should record the relevant readings, checks, defects and any safety classification explained to the customer. Extensive dismantling, replacement seals or components, and repairs identified during the visit may be chargeable work outside the routine service price, and a service cannot guarantee that a later breakdown will not occur. A landlord gas safety check is a separate legal duty. A routine service does not by itself satisfy that duty unless the prescribed safety check is also completed and the correct Gas Safety Record is issued; the two activities can be carried out during one appointment when each scope and record is completed.
Two practical consequences here:
- Warranty. Many manufacturers and extended-warranty terms require documented servicing to the maker’s schedule. Check the particular warranty, commissioning record and service-history conditions rather than assuming one universal rule. A service can help meet applicable warranty terms but cannot create or validate a warranty by itself.
- Who does it. Only a Gas Safe registered engineer may work on your gas boiler. The Gas Safe Register is the official register for gas businesses, and its ID card shows the categories an engineer is qualified for — ask to see it.3
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Privately rented homes in designated Streatham wards may fall within Lambeth’s phased selective-licensing scheme, subject to the scheme boundaries, property scope and exemptions; smaller HMOs may also fall within additional licensing.4 The landlord’s annual gas-safety duty applies whether or not a property is licensed. Lambeth Council tenants use the council repairs route, housing-association tenants contact their provider, and residents of communal-heated blocks should contact the building operator rather than booking an individual gas-boiler service.
Keep two water issues separate. Inhibitor testing relates to the closed primary heating circuit and corrosion or sludge control. Hard-water limescale is a separate risk particularly for water heaters and the domestic-hot-water side of combination boilers; any scale protection should follow the appliance instructions and local water conditions.10
Safety first
If you smell gas or suspect a leak, follow the HSE domestic emergency guidance: avoid flames and electrical switching, ventilate if safe, shut the meter control valve if safely accessible, leave if necessary and call 0800 111 999 from outside.6
The gas network across Streatham (south of the Thames) is operated by SGN, which maintains the mains up to your meter; a suspected leak still goes to the national number above.7
Carbon monoxide. A poorly running gas appliance can produce CO — colourless and odourless, with flu-like symptoms (headache, dizziness, nausea, breathlessness). Fit a CO alarm to BS EN 50291, sited per the manufacturer’s instructions.
Gas work is Gas Safe work. Only a Gas Safe registered engineer may service your boiler.3 Landlords: the annual check covers the appliances and flues you provide; installation pipework isn’t part of it, though the Gas Safe Register and HSE recommend asking the engineer to test the whole system for tightness at the same time.8
Find a verified boiler engineer by Streatham district
- Streatham High Road and town-centre flats — restricted cupboards, commercial access below and concealed flue routes may affect what can be inspected; a flue through a void may need suitable inspection access.
- Streatham Hill — property types and systems vary; an engineer should identify the actual boiler, flue route and service clearances rather than assume a combi, cylinder or shared-flue arrangement.
- Streatham Common and Vale — houses and flats may have individual boilers or landlord-controlled heating; responsibility and access should be confirmed before booking.
- Streatham Wells and Leigham Court Road — converted or leasehold homes can require tenant, landlord or managing-agent coordination for access.
Streatham has three Zone 3 National Rail stations (Southern and Thameslink) rather than a Tube, so listed engineers cover the SW16 core comfortably by road.
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| Job | Typical Streatham range (editorial estimate) |
|---|---|
| Standard annual gas boiler service | £80–£150 |
| Service + landlord gas safety check (one appliance) | £120–£190 |
| Additional appliance on the same visit | £30–£60 |
| Inhibitor top-up (if levels low) | £40–£90 |
Editorial estimate only — indicative ranges to sense-check a quote, NOT regulated rates, market data or a published cost survey. Streatham is inside the London-wide ULEZ and outside the central Congestion Charge zone. Actual business pricing can still reflect travel, fleet, parking, time and other operating costs.
Frequently asked questions
If you own and live in your home, no — it is recommended maintenance and may be required by your particular warranty terms, but it is not a general legal duty. Landlords must arrange the separate annual gas safety check on the appliances and flues they provide.1
The gas-safety duty is the same law everywhere. Where the property falls within an applicable Lambeth selective- or HMO-licensing scheme, a valid Gas Safety Record may also be a licence condition, subject to the scheme boundaries, property scope and exemptions.4
No. A service is preventive maintenance; the landlord Gas Safety Record documents the annual safety check. One doesn’t produce or replace the other.
Not directly. A service may identify symptoms or check primary-system inhibitor where required, but inhibitor controls corrosion in the heating circuit. Hard-water limescale on domestic-hot-water components needs a separate appliance-appropriate measure where justified.10
No — it must be a Gas Safe registered engineer qualified for that appliance. Ask to see the ID card.3
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Why verified plumbers — not a general directory
A boiler service is gas work, so the credential that matters most is Gas Safe registration — and that’s the first thing we confirm. Every listing is checked before it goes live and re-verified annually: we confirm the business is legitimately trading and verify the named contact, we check evidence of public liability insurance, and we confirm the plumber covers Streatham’s SW16 postcodes before a profile is approved — and we keep an eye on customer feedback gathered from across the web. Where gas is involved we confirm Gas Safe registration directly with the Gas Safe Register, and on gas jobs you should always ask to see the engineer’s Gas Safe ID card. For non-gas work you can also look a plumber up yourself on WaterSafe, the free, water-industry-backed national register.
Listed plumbers pay a flat monthly fee to be listed. What that fee never buys is the verification itself — every listing is checked on the same terms regardless of spend — and there’s no per-enquiry middleman fee, so your enquiry goes directly to the plumber. Profiles may be suspended or removed if credentials lapse or credible concerns are raised; see the full verification process →.
Related areas
Verified plumbers across Streatham’s neighbourhoods and its near neighbours, including:
- Balham
- Brixton
- Norbury
- Thornton Heath
- Tooting Bec
- Tulse Hill
Related services
Other verified plumbing services in Streatham:
- Emergency Plumber in Streatham
- Burst Pipes in Streatham
- Leak Detection in Streatham
- Blocked Drains in Streatham
- Toilet Repairs in Streatham
- Tap Repair & Installation in Streatham
- General Plumbing in Streatham
- Bathroom Plumbing in Streatham
- Kitchen Plumbing in Streatham
- Washing Machine & Dishwasher Installation in Streatham
- Boiler Repair in Streatham
- Boiler Installation in Streatham
- Central Heating Repair in Streatham
- Commercial Plumbing in Streatham
Related guides
- Should I Repair or Replace My Boiler? — London 2026
- London Hard Water — Homeowner & Landlord Guide 2026
- London Landlord Plumbing Compliance Checklist 2026
A boiler service in Streatham provides manufacturer-led checks, a documented maintenance history and an opportunity to identify defects before they worsen. It may help meet applicable warranty conditions. For landlords, the statutory Gas Safety Record is obtained only when the separate annual gas safety check has been completed and recorded; a service alone does not provide it. Compare verified Gas Safe engineers below.
Contact verified boiler engineers in Streatham ↑
Last reviewed: July 2026 by Adiel Khan — SFEDI-accredited business advisor, 20+ years’ experience (South East Enterprise Ltd) and operator of VerifiedPlumbers. LinkedIn ↗
This page is checked for compliance and regulatory accuracy against the bodies cited on it — the HSE, Gas Safe Register, HHIC Benchmark, Thames Water, SGN and Lambeth Council. Source links are provided within this page where relevant.
Sources & further reading
1. HSE — landlords’ gas safety duties and the annual check: https://www.hse.gov.uk/gas/domestic/faqlandlord.htm
2. HHIC Benchmark code of practice (warranty validation; BS 7593 inhibitor test): https://www.hhic.org.uk/uploads/5D9B41557255E.pdf
3. Gas Safe Register — official register and ID card: https://www.gassaferegister.co.uk/
4. Lambeth Council — selective licensing scheme (Streatham wards; gas record condition): https://www.lambeth.gov.uk/housing/landlords-licensing/selective-licensing-scheme
5. Thames Water — hard water in the region: https://www.thameswater.co.uk/help/water-and-waste-help/water-quality/hard-water
6. HSE — domestic gas-emergency guidance: https://www.hse.gov.uk/gas/domestic/faqs.htm
7. SGN — gas distribution network (south of England): https://www.sgn.co.uk/
8. Gas Safe Register — landlord gas responsibilities: https://www.gassaferegister.co.uk/gas-safety/renting-a-property/landlord-gas-responsibilities/
9. Gas Safe Register — boiler service scope follows the manufacturer’s instructions: https://www.gassaferegister.co.uk/gas-safety/gas-appliances/boiler-appliance-guide/
10. HHIC — separate primary-circuit corrosion treatment from domestic-water limescale protection: https://hhic.org.uk/uploads/6904A36486490.pdf