BLOGS

The countdown to December 2026

The Future Homes Standard arrives in December 2026, requiring all new dwellings to produce 75–80% fewer carbon emissions than current building regulations allow. For housebuilders, this represents both a regulatory deadline and a commercial opportunity. Those who adopt low-carbon technologies early—solar arrays, air-source heat pumps, battery storage, and enhanced insulation—are positioning their developments to command premiums in a market increasingly focused on running costs and environmental performance.

REalyse planning data reveals that over 2,500 new build schemes granted approval in the past 24 months explicitly reference sustainable or energy-efficient features in their planning descriptions. These range from single self-build dwellings with ground-source heat pumps to major urban regeneration projects promising net-zero operational carbon.

New builds dominate top EPC ratings

The energy performance gap between new and existing stock has never been more pronounced. REalyse analysis of sales transactions from the past twelve months shows a stark contrast:

• New builds: 72% achieve EPC Band B, with a further 20% rated EPC A—meaning over 90% of new homes sold are in the top two energy bands

• Existing stock: Just 0.3% reach EPC A and 11.5% achieve EPC B, while nearly 80% sit at C or D, with 10% rated E, F, or G

For investors and owner-occupiers alike, this translates directly into operating costs. A typical EPC A-rated home may cost £300–500 per year to heat and power, while a D-rated equivalent could run to £1,500 or more—a difference that compounds over a mortgage term and increasingly factors into affordability assessments.

Where the green pipeline is building

The planning pipeline for energy-efficient residential schemes is concentrated in areas with strong institutional development activity. REalyse data on granted applications mentioning solar, heat pumps, battery storage, or net-zero commitments shows:

• Central London: 1,207 units across 9 schemes, valued at over £231 million

• Merton: 801 units in a single large scheme worth £93 million

• Kent: 456 units across 5 schemes, representing £119 million in development value

• Norfolk: 345 units in one major scheme valued at £116 million

• Greater Manchester: 127 units across 3 schemes

Beyond the South East, approved schemes appear across Wales (Mid Glamorgan, Gwent), Scotland (Strathclyde, Dumfries & Galloway), and the Midlands, suggesting that energy-efficient design is becoming standard practice rather than a niche offering.

Investment implications and yield dynamics

For buy-to-let investors and institutions, energy-efficient new builds offer a compelling proposition. Lower running costs support tenant affordability, potentially reducing void periods and arrears risk. Properties meeting the incoming Minimum Energy Efficiency Standard (MEES) requirements—which will tighten to EPC C for new tenancies from 2028—avoid costly retrofit obligations that could otherwise absorb years of rental income.

REalyse data indicates that new build properties typically trade at a premium to existing stock on a price-per-square-foot basis, though gross yields may initially appear compressed. However, the total cost of ownership calculation increasingly favours new stock when factoring in:

• No immediate EPC upgrade requirements

• Lower maintenance and repair costs in early years

• Enhanced saleability to environmentally conscious buyers

• Protection against future regulatory changes

Build-to-rent operators and institutional investors are particularly attuned to these dynamics, with REalyse planning data showing a growing proportion of BTR schemes incorporating fabric-first sustainability measures and on-site renewable generation.

What housebuilders are delivering

The "zero-bills home" concept—combining rooftop solar, battery storage, air-source heat pumps, and mechanical ventilation with heat recovery—is moving from showcase developments into volume housebuilding. Major developers have announced portfolio-wide commitments to Future Homes Standard compliance ahead of the deadline, while regional builders use energy performance as a differentiator in competitive local markets.

Planning applications approved in the past 24 months reveal common technology combinations:

• Solar PV and battery storage: Enabling self-consumption and grid export income

• Air-source heat pumps: Now the default heating system in many new schemes, replacing gas boilers

• Enhanced fabric performance: Triple glazing, improved insulation values, and airtightness testing

• Smart home integration: Energy monitoring and demand management systems

For buyers, these features translate into homes where energy bills could fall to near-zero during summer months and remain modest year-round.

Outlook for buyers, investors, and the existing stock challenge

The accelerating shift to energy-efficient new builds creates a widening performance gap with existing housing stock. While new homes increasingly achieve EPC A or B as standard, the 29 million existing homes in England alone remain predominantly rated D or below.

This divergence has implications across the market:

• Price premiums: Energy-efficient new builds are likely to sustain or widen their price advantage as running costs become a more prominent factor in purchase decisions

• Retrofit investment: Owners of existing stock face growing pressure to invest in insulation, glazing, and low-carbon heating to maintain value and comply with tightening regulations

• Investor strategy: Long-term holders may increasingly favour new stock to avoid future capital expenditure on EPC upgrades

REalyse continues to track planning approvals, EPC distributions, and price differentials to help investors, lenders, and developers navigate this evolving landscape. For the most accurate property-level valuations incorporating energy performance data, the Pulse Valuations tool provides detailed comparable analysis and market positioning.

The December 2026 deadline marks a step-change in what "new build" means for UK housing. For housebuilders moving early, it represents competitive advantage; for buyers and investors, it offers long-term value; and for the existing stock, it highlights the scale of retrofitting challenge ahead.