By Peter Davies, ECO4 Analyst
Reviewed
Pillar guides: Free boiler upgrade Β· ECO4 eligibility Β· LA Flex grants
GL1βGL56
Postcode coverage
Wales & West Utilities
Gas Distribution Network
LA Flex active
Cotswold District Council (lead) + 5 other Gloucestershire districts + South Gloucestershire Council
Β£0
Cost to qualifying households
There are two routes for Gloucestershire households. Pick whichever applies β you don't need both.
Per gov.uk's Energy Company Obligation page, you qualify if you receive any of:
No qualifying benefit? Cotswold District Council (lead) + 5 other Gloucestershire districts + South Gloucestershire Council runs its own referral route through the LA Flex Statement of Intent.
Bottom line: If your address is in GL1βGL56, you claim a qualifying benefit or fall under Cotswold District Council (lead) + 5 other Gloucestershire districts + South Gloucestershire Council's LA Flex criteria, and your EPC is D-G, the eligibility check is a 49-second form.
Gloucestershire has approximately 270,000 dwellings across the six Gloucestershire districts under Gloucestershire County Council β Cheltenham, Cotswold, Forest of Dean, Gloucester (city), Stroud and Tewkesbury β with another approximately 120,000 in the neighbouring South Gloucestershire unitary (DLUHC Council Tax stock of properties statistics, September 2024). The county's housing stock is one of England's most heterogeneous. The Cotswold AONB villages (Bourton-on-the-Water, Stow-on-the-Wold, Moreton-in-Marsh, Northleach, Fairford, Lechlade, Tetbury, Painswick, Nailsworth) are dominated by Cotswold-stone cottages and terraces, most of them Grade II listed under the AONB plus the Cotswolds Conservation Areas β boiler swaps are fine internally but external flue routing and any wall-insulation work need listed-building consent. Gloucester city (GL1βGL4) and Cheltenham (GL50βGL53) add Victorian and Edwardian red-brick terraces in St Pauls, Tredworth, Whaddon and the Cheltenham St Pauls / Hesters Way / Whaddon estates, plus Cheltenham's Regency villas (Pittville, Lansdown, Montpellier) which carry their own Conservation Area constraints. The Stroud valley settlements (Stroud, Nailsworth, Dursley, Wotton-under-Edge, Cam) sit in steep mill-village terraces with their own mid-19th-century stone vernacular. Tewkesbury and Berkeley add small-town Victorian stock. The Forest of Dean (Coleford, Cinderford, Lydney, Newent and the rural hamlets between) is the off-grid catchment β much of the Forest is OFF the WWU mains network with oil-fired or LPG heating dominant in the rural villages. The combination β Cotswold AONB listed cottages, Cheltenham Regency villas, Gloucester city terraces, Stroud mill villages, Forest of Dean off-grid hamlets β makes Gloucestershire one of England's highest-impact ECO4 catchments for the mix of boiler-replacement (on the mains-gas urban belt) and insulation-first work (on the AONB and Forest off-grid stock). Severn Estuary Flood Zone 2/3 affects boiler-placement decisions in parts of Stroud, Tewkesbury and lower Gloucester.
Total dwellings
270,340
as of 2024-09
Private sector
β
owner-occupied + rented
Social housing
β
registered providers
Bottom line: Gloucestershire's mix of pre-1919 and post-war stock is exactly the catchment ECO4 targets. The mandatory PAS 2035 retrofit assessment will confirm the SAP uplift for your specific address.
Wales & West Utilities is the Gas Distribution Network operator for Wales and the South-West β that includes every GL1βGL56 postcode.
~10 m connection
Β£500βΒ£800
50 m+ connection
Β£1,500βΒ£2,500
If your property is already on the gas main β most Gloucestershire addresses are β there is nothing to pay. ECO4 funds the boiler, internal pipework, controls, meter installation, and safe removal of the old system.
Wales & West Utilities's indicative pricing toolBottom line: Almost every Gloucestershire address (GL1βGL56) is already on the Wales & West Utilities gas main, so the connection cost is Β£0. The rare off-main cases sit on the outer fringes and pay Wales & West Utilities separately for the new connection.
You may have seen the successor scheme called "ECO5" online β there is no ECO5. The government has abolished the Energy Company Obligation model and replaced it with the Warm Homes Plan β a Β£15 billion programme funded by public investment rather than levies on energy bills. ECO4 still runs until 31 December 2026, so Gloucestershire households should apply now while the scheme is open.
Low-income grants
Β£4.4 bn
Warm Homes Social Housing Fund + Local Grant
Boiler Upgrade Scheme
Β£7,500
per household, clean-heat grant
Delivery moves from Ofgem to a new Warm Homes Agency, with the Social Housing Fund and Local Grant consolidating into a single low-income capital scheme by 2027/28.
Sources: gov.uk β Warm Homes Plan (updated 18 March 2026); Ofgem response to the Warm Homes Plan.
Bottom line: ECO4 closes 31 December 2026. The Warm Homes Plan replaces it from 2027 β apply now while the current scheme is still open and the Β£4,000βΒ£8,000 install value is fully funded.
Property
1950s detached three-bed Forest of Dean rural bungalow, render-over-block construction, on a back lane between the village and the mining-heritage trail β OFF the WWU mains gas network
Existing system
1990s oil-fired boiler in an outside utility room, feeding a vented hot-water cylinder and a basic radiator circuit with two TRVs; oil tank in the rear garden; no programmable controls; EPC band E; existing oil boiler 17 years old
Measure installed
Old oil boiler decommissioned and removed; new condensing oil-fired boiler installed in the same utility room with a new flue; new bunded oil tank fitted to current OFTEC standards; programmable smart controls and TRVs fitted across all radiators. Plus 270mm loft top-up insulation under the same ECO4 referral. Coordination via Warm and Well / Severn Wye Energy Agency after a free 0800 500 3076 eligibility check.
Outcome
EPC modelled uplift from band E to band C; first-winter oil demand reduced by roughly a third; homeowner paid Β£0 (qualified via Pension Credit; oil-boiler swap funding flowed through the Warm Homes Local Grant strand of ECO4 rather than the headline boiler-replacement budget). Forest of Dean rural location made loft insulation the highest-SAP-uplift add-on.
Time on site
One day on site for the new oil boiler and tank, plus a half-day return visit for the controls / TRV commissioning, plus a separate day for the loft work.
Illustrative β based on typical GL1βGL56 installs, not a single named customer.
Bottom line: Typical Gloucestershire installs deliver a two-band EPC uplift in a single intervention at Β£0 to the qualifying household. Your individual case depends on the PAS 2035 assessment, but the Cinderford, Forest of Dean (GL14) pattern above is representative.
Total install value typically Β£4,000βΒ£8,000.
Most Gloucestershire addresses are already on the gas main β nothing extra to pay.
Bottom line: If your ECO4 application is approved, the install is Β£0 β typical install value Β£4,000βΒ£8,000. The only out-of-pocket case is a brand-new gas-main connection from off-grid, which is uncommon in Gloucestershire.
Run our wizard or call +44 7375 868046.
A free home survey by an accredited assessor confirms the right measure for your property.
Gas Safe install, building-control sign-off, lodged on the TrustMark Data Warehouse.
Prefer to contact Cotswold District Council (lead) + 5 other Gloucestershire districts + South Gloucestershire Council directly?
Installer chain verified via TrustMark and Ofgem ECO4 Delivery Guidance v4.0.
Bottom line: From the 49-second eligibility check to a commissioned boiler, a typical Gloucestershire ECO4 job runs five to seven weeks. The wizard above is the fastest start β or call +44 7375 868046.
Gloucestershire is unusual β the 1 July 2024 ECO4 Flexible Eligibility Statement of Intent is published by Cotswold District Council on behalf of SEVEN councils: the six Gloucestershire districts (Cheltenham, Cotswold, Forest of Dean, Gloucester, Stroud, Tewkesbury) AND the neighbouring South Gloucestershire unitary, which is administratively separate (part of the West of England Combined Authority alongside Bristol). The joint SoI uses the standard Ofgem framework (Route 1 income under Β£31,000, Route 2 two-of-six proxies including the council-named Warm and Well scheme as Proxy 5, Route 3 NHS / GP referral). Warm and Well is delivered by Severn Wye Energy Agency, a Gloucester-based charity (1083051) founded 1999. It is the same county-charity delivery pattern Bristol uses with CSE and Cornwall uses with Community Energy Plus β but covering seven councils instead of one.
Yes for the boiler itself, but external work needs Cotswolds AONB Conservation Area or listed-building consent. Most Cotswold villages (Bourton-on-the-Water, Stow-on-the-Wold, Moreton-in-Marsh, Northleach, Fairford, Lechlade, Tetbury, Painswick, Nailsworth) sit inside the Cotswolds AONB and many cottages are Grade II listed individually as well. The internal wall-mounted condensing combi boiler is normally fine β the constraint is on the flue routing and any external wall-insulation work. Cotswold-stone facades cannot accept external wall insulation that changes the appearance of the cottage; flues cannot exit through principal listed elevations. Most Cotswold installs route the flue through a rear wall or use an existing redundant chimney. Your PAS 2035 retrofit assessor will flag the consent requirements before the install is approved.
Yes. The Forest of Dean is the largest off-grid catchment in Gloucestershire β much of the Forest interior, the Wye Valley fringe and the rural belt outside Lydney, Coleford and Cinderford is OFF the WWU mains network and runs on oil-fired or LPG heating. Standard ECO4 funding for oil-boiler swaps is more limited than for gas, but the Β£5.25m DESNZ Warm Homes Local Grant that Severn Wye won in late 2025 explicitly extends boiler-replacement support to oil-heated properties in Gloucestershire and South Gloucestershire. Insulation-first work (loft top-up, internal wall insulation, draught-proofing) is also a strong route for Forest off-grid stock. Call Warm and Well on 0800 500 3076 to confirm what's available for your specific Forest address.
Wales & West Utilities (WWU) is the GDN for Wales and the South-West, including the Gloucestershire mains network. WWU reaches Gloucester, Cheltenham, Stroud, Tewkesbury, Cirencester and the larger market towns, but does NOT extend deep into the Forest of Dean interior or to many of the Cotswold rural hamlets. ECO4 covers the new boiler, internal pipework, meter installation and removal of the old system at no cost where you are on the mains. ONE Gloucestershire-specific issue: parts of Stroud, Tewkesbury and lower Gloucester sit in Environment Agency Flood Zone 2 or 3 (Severn Estuary catchment). Boiler placement in flood-zone properties must follow flood-resilience guidance β the boiler should be wall-mounted above the 1-in-100-year flood level if possible, and electrical components should sit on raised plinths. Your PAS 2035 assessor will check the flood-zone designation before the install is approved.
A landlord can decline the application but cannot evict you or raise the rent for asking. Cheltenham and Gloucester have substantial private rented sectors β particularly Cheltenham St Pauls / Hesters Way and Gloucester Tredworth / Barton β and ECO4 explicitly covers private rental homes at EPC band E, F or G (one band stricter than the D-G rule for owner-occupiers). The landlord must consent in writing. They cannot raise the rent for asking and the upgrade improves their asset at no cost. With the forthcoming Minimum Energy Efficiency Standards uplift to EPC C looming for the PRS, most West-of-England landlords are inclined to say yes. Our installer team handles the landlord-consent paperwork.
From the initial Warm and Well eligibility call to a commissioned new boiler, a typical Gloucestershire mains-gas job runs five to seven weeks. The eligibility pass takes 49 seconds through our wizard or via the Warm and Well 0800 500 3076 freephone. The PAS 2035 retrofit assessment is usually booked within ten working days, with surveyors operating across Gloucester city, Cheltenham, Stroud valleys, Tewkesbury and out to the Cotswold villages and Forest of Dean. The install itself is two to three days for a standard combi swap. Forest of Dean off-grid oil-boiler swaps under the Warm Homes Local Grant strand take six to eight weeks end-to-end because the Technical Officer needs to specify the oil tank, the flue terminal and (for flood-zone properties) the boiler-elevation arrangement.
ECO4 closes 31 December 2026. After that, the Β£15 billion Warm Homes Plan takes over from April 2027 β funded by public investment rather than energy-bill levies, and delivered by the new Warm Homes Agency rather than Ofgem (gov.uk Warm Homes Plan, updated 18 March 2026). You may have seen the successor scheme called 'ECO5' online β that name is not used by government and no scheme by that title exists. For Gloucestershire households, the practical effect is straightforward: if you apply under ECO4 before the 31 December 2026 close, the install is funded under ECO4 even if the engineer's visit happens in early 2027; if you start a fresh application after 1 January 2027, you'll be routed through the Warm Homes Local Grant (WHLG), the Warm Homes Social Housing Fund, or the Β£7,500 Boiler Upgrade Scheme depending on your tenure and property. Your local council's energy team continues to handle the referral throughout the transition.
gov.uk β Energy Company Obligation (ECO4)
Qualifying benefits and EPC band rules
Ofgem β ECO4 Delivery Guidance v4.0 (March 2026)
Scheme closure 31 December 2026, measure rules
gov.uk β Warm Homes Plan
Β£15bn ECO4 successor scheme, updated 18 March 2026
Cotswold District Council (lead) + 5 other Gloucestershire districts + South Gloucestershire Council β Energy Company Obligations (ECO4) page
last updated 2024-07-01
Cotswold District Council (lead) + 5 other Gloucestershire districts + South Gloucestershire Council β ECO Flexible Eligibility Statement of Intent
LA Flex thresholds and vulnerability criteria
Wales & West Utilities β new gas connection page
GDN-side connection-cost guidance
DLUHC β Council Tax: stock of properties (England), September 2024
Dwelling counts for Gloucestershire (2024-09)
ONS β Energy efficiency of housing in England and Wales (2023)
Regional EPC band distribution
Page reviewed: .
49-second form. No commitment. No cost. GL1βGL56 households on Universal Credit, Pension Credit, PIP, ESA, JSA, Income Support, Housing Benefit or Child Benefit β start here. Apply under ECO4 now (closes 31 December 2026); the Warm Homes Plan (sometimes searched as "ECO5") replaces it from April 2027.