ECO4 Closes 31 December 2026 · Warm Homes Plan from 2027 | 7,000+ Installations
•
💰Earn £100 Per ReferralBy Peter Davies, ECO4 Analyst
Reviewed
Yes — if you live in SR1–SR6 and either claim a qualifying benefit (Universal Credit, Pension Credit, PIP, ESA, Income Support, Working Tax Credit or Child Tax Credit) with an EPC of band D–G, or your gross household income is under £31,000 via Sunderland City Council's October 2024 LA Flex Statement of Intent V1.5, you can apply for a 100% free ECO4 boiler replacement. Sunderland is on the Northern Gas Networks gas grid — the same GDN that serves Newcastle, Middlesbrough and the wider North East.
Pillar guides: Free boiler upgrade · ECO4 eligibility · LA Flex grants
SR1–SR6
Postcode coverage
Northern Gas Networks
Gas Distribution Network
LA Flex active
Sunderland City Council
£0
Cost to qualifying households
There are two routes for Sunderland households. Pick whichever applies — you don't need both.
Per gov.uk's Energy Company Obligation page, you qualify if you receive any of:
No qualifying benefit? Sunderland City Council runs its own referral route through the LA Flex Statement of Intent.
Bottom line: If your address is in SR1–SR6, you claim a qualifying benefit or fall under Sunderland City Council's LA Flex criteria, and your EPC is D-G, the eligibility check is a 49-second form.
Sunderland's housing has a genuinely distinctive Victorian typology — the Sunderland Cottage. Built in their tens of thousands from the 1840s to 1914 for the city's shipyard workforce, these are single-storey terraced bungalows with classical brick proportions, sash windows, slate roofs and rear yards. They cluster around Hendon (SR1, SR2), Pallion (SR4), Southwick (SR5), Roker (SR6) and Millfield (SR4) — Ridley Terrace in Hendon is one of the earliest surviving streets, the Cairo Street cluster nicknamed "Little Egypt" sits in Hendon, and Ancona Street in Pallion is named for the Italian shipbuilding port. Standard two-storey Victorian terraces also exist (around Hendon, parts of Southwick and the streets near Roker Park) but the Cottage is the city's signature stock. The 20th-century picture adds Sunderland Council's large post-war estates at Castletown (SR5), Houghton-le-Spring fringe (DH4 — outside this row), Pennywell (SR4), Hylton Castle (SR5) and the 1960s/70s Town End Farm (SR5) — mostly cavity-walled. For ECO4 the strongest catchment is the Sunderland Cottage belt — a combined boiler-replacement plus loft and cavity package routinely lifts EPC band E to band C, with the single-storey footprint making solid-wall insulation an effective phase-2 measure where the front elevation is not in a Conservation Area.
Total dwellings
124,000
as of 2021 Census
Private sector
—
owner-occupied + rented
Social housing
—
registered providers
Bottom line: Sunderland'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.
Northern Gas Networks is the Gas Distribution Network operator for the North-East and Northern Cumbria — that includes every SR1–SR6 postcode.
~10 m connection
£500–£800
50 m+ connection
£1,500–£2,500
If your property is already on the gas main — most Sunderland addresses are — there is nothing to pay. ECO4 funds the boiler, internal pipework, controls, meter installation, and safe removal of the old system.
Northern Gas Networks's indicative pricing toolBottom line: Almost every Sunderland address (SR1–SR6) is already on the Northern Gas Networks gas main, so the connection cost is £0. The rare off-main cases sit on the outer fringes and pay Northern Gas Networks separately for the new connection.
You may have seen the successor scheme called "ECO5" online — there is no ECO5. The government has abolished the Energy Company Obligation model and replaced it with the Warm Homes Plan — a £15 billion programme funded by public investment rather than levies on energy bills. ECO4 still runs until 31 December 2026, so Sunderland households should apply now while the scheme is open.
Low-income grants
£4.4 bn
Warm Homes Social Housing Fund + Local Grant
Boiler Upgrade Scheme
£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 — 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 — apply now while the current scheme is still open and the £4,000–£8,000 install value is fully funded.
Property
1880s Sunderland Cottage — single-storey terraced bungalow, two-bed, solid-brick front and rear, slate roof, rear yard
Existing system
EPC band E — 1998 non-condensing combi at end of life, gravity-fed copper pipework, no TRVs, original sash sashes, slight rising damp on the front elevation
Measure installed
Old combi removed; new A-rated condensing combi sited internally; full system flush; new programmable controls and TRVs; loft topped up to 270mm. Solid-wall insulation scoped as a phase-2 PAS 2035 measure where the street is outside the Conservation Area.
Outcome
EPC modelled uplift from band E to band D; first-winter heating-bill cut of roughly £500–£700. £0 paid by the household.
Time on site
Completed in a single day on site.
Illustrative — based on typical SR1–SR6 installs, not a single named customer.
Bottom line: Typical Sunderland installs deliver a two-band EPC uplift in a single intervention at £0 to the qualifying household. Your individual case depends on the PAS 2035 assessment, but the SR4 Pallion pattern above is representative.
Total install value typically £4,000–£8,000.
Most Sunderland addresses are already on the gas main — nothing extra to pay.
Bottom line: If your ECO4 application is approved, the install is £0 — typical install value £4,000–£8,000. The only out-of-pocket case is a brand-new gas-main connection from off-grid, which is uncommon in Sunderland.
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.
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 Sunderland ECO4 job runs five to seven weeks. The wizard above is the fastest start — or call +44 7375 868046.
Sunderland homeowners (EPC band D–G) and private tenants (EPC band E–G, with landlord consent) whose household either claims a qualifying benefit (Universal Credit, Pension Credit, PIP, ESA, Income Support, Working Tax Credit or Child Tax Credit) or has gross income under £31,000 via Sunderland City Council's LA Flex referral. A cold-sensitive health condition can substitute for the income test. Households can be fully employed, self-employed, on an occupational pension, or in receipt of benefits or tax credits.
Yes. Sunderland City Council publishes its ECO4 and Great British Insulation Scheme Flexible Eligibility Statement of Intent at V1.5 (October 2024), covering both schemes. The standard £31,000 gross income threshold applies, with evidence required to confirm the household income to the ECO4 contractor.
Northern Gas Networks (NGN) operates the gas mains across all SR postcodes — the same GDN that covers Newcastle, Middlesbrough, Bradford, Leeds and Hull. ECO4 covers the new boiler, internal pipework, meter installation and removal of the old system at no cost. The connection from your meter back to the NGN main is separate — NGN publishes an online quote tool for households needing a new connection.
The Sunderland Cottage — a single-storey Victorian terraced bungalow built for shipyard workers from the 1840s onwards — is the city's signature housing type. Tens of thousands cluster around Hendon, Pallion, Southwick, Millfield and Fulwell. The strongest scoring ECO4 package is an A-rated condensing combi replacement plus loft top-up to 270mm. The single-storey footprint makes external solid-wall insulation an unusually effective phase-2 measure (where the street is outside a Conservation Area).
Often yes — this is First-Time Central Heating (FTCH), one of the highest-scoring ECO4 measures because moving from Economy 7 storage heaters to a gas combi typically jumps the EPC two bands. Sunderland Council's post-war estates at Pennywell, Hylton Castle, Town End Farm and Castletown were built to early Parker Morris standards with cavity walls and are mostly connected to NGN's mains.
The Sunderland Cottage was a deliberate single-storey terrace typology developed for the city's shipyard workforce — built in their tens of thousands from the 1840s to 1914, often by skilled-artisan owner-occupiers buying their first home. Sunderland today has the highest concentration of these pre-1919 single-storey terraces in England. For ECO4 they matter because the small footprint and solid-wall construction mean a relatively modest boiler-plus-loft package delivers a large SAP uplift, and external-wall insulation as a phase-2 measure is unusually cost-effective.
ECO4 closes 31 December 2026. After that, the £15 billion Warm Homes Plan takes over from April 2027 — 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 — that name is not used by government and no scheme by that title exists. For Sunderland 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 £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 — Energy Company Obligation (ECO4)
Qualifying benefits and EPC band rules
Ofgem — ECO4 Delivery Guidance v4.0 (March 2026)
Scheme closure 31 December 2026, measure rules
gov.uk — Warm Homes Plan
£15bn ECO4 successor scheme, updated 18 March 2026
Sunderland City Council — Energy Company Obligations (ECO4) page
last updated 2024-10-01
Sunderland City Council — ECO Flexible Eligibility Statement of Intent
LA Flex thresholds and vulnerability criteria
Northern Gas Networks — new gas connection page
GDN-side connection-cost guidance
ONS Census 2021 — Sunderland metropolitan borough (E08000024)
Dwelling counts for Sunderland (2021 Census)
Sunderland City Council — Housing Strategy evidence
Regional EPC band distribution
Page reviewed: .
49-second form. No commitment. No cost. SR1–SR6 households on Universal Credit, Pension Credit, PIP, ESA, JSA, Income Support, Housing Benefit or Child Benefit — start here. Apply under ECO4 now (closes 31 December 2026); the Warm Homes Plan (sometimes searched as "ECO5") replaces it from April 2027.
