Gas installer pricing in London
What gas installers charge in London (typically £55-£130/hr), the local factors that move the rate, and a sample quote you can use as a starting point.
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London gas installer pricing
What gas installers should charge in London
London gas work is heavily regulated. Gas Safe Register membership is mandatory (replaced CORGI in 2009). Building Regs Part J (combustion appliances) and Part L (energy efficiency) apply on every install. Future Homes Standard 2025 bans new gas connections in new-build homes, driving heat-pump conversion demand. Annual landlord Gas Safety Certificate (CP12) is mandatory on every private rented sector property (1.5m+ flats). Listed Building Consent and Conservation Area Consent restrict external flue placement on most central work.
Hourly rate
£55-£130
per hour, weekday daytime
Call-out fee
£39-£83
within standard radius
After-hours
1.5-2x
evening, weekend, holiday
Job pricing
What to charge for common gas installer jobs in London
Real-world price ranges for the jobs local tradies quote every week. Use the table as a starting point for your own quotes and adjust for parts, access, and your overheads. All figures in GBP.
Standard call-out (within radius)
What's included
Includes first 30 min diagnostic. Credited against the work on most jobs.
Annual gas safety check
What's included
Includes appliance inspection, gas pressure test, ventilation check, and CP12 certificate. Required by most landlords.
Gas hob install (existing connection)
What's included
Includes hob connection, isolation valve, leak test, and 1-2 hour labour. Cooker hood install extra.
Gas oven install (existing connection)
What's included
Includes oven connection, flexible hose, isolation, leak test, and 1-2 hour labour.
Gas water heater swap (like-for-like)
What's included
Includes new unit, fittings, flue check, and 2-4 hour labour. Tankless units cost more.
Gas fireplace install
What's included
Includes unit (varies £550-2,500), flue work, gas line extension, and 1-2 day labour. Stone surround extra.
New gas line (per linear m)
What's included
Includes pipe, fittings, mounting, and labour. Indoor concealed runs cost more than outdoor surface mounted.
LPG to natural gas conversion
What's included
Includes regulator change, jet swap on all appliances, pressure adjustment, recertification. Per-appliance scope.
Emergency leak detection + repair
What's included
Includes detection equipment, source isolation, and 1-3 hours labour. Underground leaks cost more.
London quote factors
What to factor into your London gas installer quote
Local context that should shape what you quote as a gas installer in London. Mild oceanic. Cool wet winters (rarely below freezing), warm summers with periodic heatwaves (40°C+ in 2022), ~600mm rainfall per year. Mild climate makes heat-pump retrofit attractive; basement conversions and central-air retrofit are a niche premium market, not mainstream.
Gas Safe Register mandatory
Any gas work in the UK requires Gas Safe Register registration (replaced CORGI in 2009). Print Gas Safe ID, business reference, and individual engineer ID on every quote. Clients can verify online at gassaferegister.co.uk. Unregistered gas work is illegal and uninsurable. Annual renewal and continuing-professional-development requirements apply.
Annual landlord Gas Safety Certificate (CP12)
Every private rented sector property must have annual Gas Safety Certificate (CP12). London has 1.5m+ rented properties; quote £80-£150 per property annually as recurring revenue. Build relationships with 5-10 letting agents and managing agents for portfolio billing. Some agents pay £15,000-£60,000/year for portfolio CP12 contracts.
Combi boiler and system boiler install
Standard combi boiler install (Worcester Bosch, Vaillant, Viessmann, Ideal, Baxi) £2,500-£4,500 fully installed including new flue, system flush, magnetic filter (Adey MagnaClean or Fernox TF1), thermostat, 7-10 year warranty. System boiler with cylinder £3,500-£6,500. Premium brands (Viessmann Vitodens 200-W, Worcester Bosch Greenstar Lifestyle) command 20-30% premium. State warranty length and registered installer brand on every quote.
Future Homes Standard 2025 heat-pump conversion
Future Homes Standard 2025 bans new gas connections in new-build homes from 2025. Existing homes can retain gas but conversion to heat pump growing. Quote gas-to-heat-pump conversion (£8,500-£18,000 with Boiler Upgrade Scheme £7,500 grant netted off) as a growing market. MCS-certified installer required for BUS.
Building Regs Part J and L compliance
Building Regs Part J (combustion appliances) and Part L (energy efficiency) apply on every gas install. Quote flue routing, ventilation, condensate drainage, and EER (ErP energy rating) on every quote. Approved Inspector or LABC certificate (£200-£600 per project) or Gas Safe registered self-certification covers Part J compliance.
Conservation Area and Listed Building external flue control
Most central London Conservation Areas restrict external flue placement (visible from street, listed-building elevations). Quote Conservation Area Consent or Listed Building Consent expediter (£800-£3,500), 8-16 week timeline, and alternative flue routing (rear elevation, internal balanced flue, room-sealed) on every central-London quote.
Sample quote
A real London gas installer quote you can copy
Gas water heater swap, like-for-like 200L unit, residential. Replace the line items and rates with your own; the structure stays.
Call-out fee (within 20km radius)
Rinnai 200L gas storage water heater (5-year warranty)
Flexible gas connection, isolation valve, drip tray
TPR valve, vacuum breaker, expansion control valve
Labour (3 hours: remove old unit, install new, commission, flue check)
Disposal of old water heater
Gas safety certificate (CP12 / CoC equivalent)
Pressure test, leak check, commissioning sign-off
FAQ
London gas installer pricing questions, answered
Common questions about gas installer pricing in London, with answers framed for tradies pricing their own work.
£55-£140/hour for outer boroughs (Croydon, Bromley, Newham). £75-£170/hour for mid-tier (SW4, SW6, SW18, N1, SE1). £100-£200/hour for premium central (W1, SW1, SW3, SW7, W8, W11). Per-install: combi boiler £2,500-£4,500; system boiler with cylinder £3,500-£6,500; full heating system £5,500-£12,500. Print Gas Safe ID on every quote. VAT 20% shown separately.
Yes, mandatory for any gas work in the UK (replaced CORGI in 2009). Print Gas Safe ID, business reference, and individual engineer ID on every quote. Clients can verify online at gassaferegister.co.uk. Unregistered gas work is illegal and uninsurable.
£80-£150 per property annually as recurring revenue. London has 1.5m+ private rented sector flats; build relationships with 5-10 letting agents and managing agents for portfolio billing. Some agents pay £15,000-£60,000/year for portfolio CP12 contracts. State Gas Safe ID and certificate number on every CP12 issued.
£2,500-£4,500 fully installed including new flue, system flush, magnetic filter (Adey MagnaClean or Fernox TF1), thermostat, 7-10 year warranty. Brands: Worcester Bosch, Vaillant, Viessmann, Ideal, Baxi. Premium brands (Viessmann Vitodens 200-W, Worcester Bosch Greenstar Lifestyle) command 20-30% premium. State warranty length and registered installer brand on every quote.
Future Homes Standard 2025 bans new gas connections in new-build homes from 2025. Existing homes can retain gas but conversion to heat pump growing fast. Quote gas-to-heat-pump conversion (£8,500-£18,000 with Boiler Upgrade Scheme £7,500 grant netted off) as a growing market. MCS-certified installer required for BUS.
Hourly rates are £55 to £110 in the US, £55-130 in the UK, A£69-200 in Australia, R450-1,100 in South Africa, and C£55-170 in Canada. Gas work commands a premium over general plumbing because of the licensing, insurance, and risk.
Yes, by law in every region. Unlicensed gas work is illegal, uninsurable, and the installer can face criminal charges. Verify the licence: Gas Safe UK, TSSA Canada, Master Plumber Gas Australia, SAQCC Gas SA, state-licensed plumber US. The number should appear on the quote.
A document signed by a licensed installer confirming the gas appliance and connection are safe. Required for landlord rentals (annual in UK as CP12, varied elsewhere), insurance claims, and property sales. Always insist on the certificate as part of the work.
Yes, 2-3 quotes for gas work over £345. Compare licence numbers, appliance brand, certification inclusion, and warranty. The cheapest quote sometimes skips the pressure test or certificate, both of which are illegal omissions.
Typically travel time, fuel, the first 15-30 minutes on site, and basic diagnostic work. Most gas installers credit the call-out against the work if the customer proceeds. State explicitly on the quote.
Keep going
More gas installer resources
The full international pricing guide, ready-to-send templates, and the main gas installers page.
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