Boosting BTL Property Energy Efficiency in the UK

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The UK's Buy-To-Let (BTL) property market is becoming progressively more competitive. One effective strategy for landlords to stand out is to improve their property's energy efficiency. This not only benefits the environment but also reduces tenants’ costs, enhances rental income, attracts environmentally-conscious tenants and ensures compliance with evolving legal standards. According to the Energy Saving Trust, around 22% of the carbon emissions released in the UK come from homes.1

Why Energy Efficiency Matters for BTL Investors

Reducing Energy Bills and Increasing Rental Yields

Properties with superior energy performance have lower utility bills due to enhanced efficiency. As energy costs are a major household expense, renters are often willing to pay higher rents for energy-efficient homes, directly increasing landlords' rental yields and profit margins.

Meeting Legal Requirements and EPC Ratings

UK rental properties must have mandated Energy Performance Certificates (EPCs) with minimum ratings. As the government pushes for higher benchmarks to meet environmental goals, optimizing properties' EPC ratings through energy efficiency upgrades is essential for legal compliance.

Attracting Eco-Conscious Tenants and Future Buyers

Increasingly, renters and homebuyers prioritize sustainability. Properties boasting green features stand out by appealing to this growing demographic who value environmental responsibility. This supports continued tenant demand and resale value.

Top Strategies for Energy Efficiency Upgrades  

Weatherproofing and Insulation

Enhancing weatherproofing and insulation significantly increases efficiency. Upgrading lofts, walls, windows, doors and draft proofing pays dividends through improved insulation. This noticeably enhances tenant comfort and reduces wasted energy consumption.

Renewable Energy Solutions

Incorporating renewable energy sources like solar panels or heat pumps dramatically decreases utility bills and environmental impact. Despite higher initial equipment and installation costs, the long-term energy savings and property improvements deliver a return on investment.  

Installing solar panels can drastically shrink a home's carbon footprint. An average solar photovoltaic system installed on the rooftop of a house in southern England can produce approximately 3,700 kilowatt hours of electricity annually - more than such household's typical yearly power usage.2  Furthermore, experts determine shifting to an average residential solar set up can eliminate around 1,000kg worth of carbon dioxide emissions per year for that home. By harnessing the sun's energy, homeowners across the UK can achieve major savings in both household electricity consumption from the grid and annual CO2 outputs by going solar.3

Smart Home Technology and Automation

Smart home devices enable both tenants and landlords to effortlessly monitor and control energy use for added savings. Smart thermostats, lighting and appliances provide both property enhancements and remote energy management capabilities.  

The government has held discussions with energy companies and other industry players regarding its plan for smart meter installation targets in 2024 and 2025. Based on that feedback, it has set new goals for energy suppliers to deploy smart meters in at least 74.5% of households and nearly 69% of small businesses by the end of 2025. Back in 2019, the Department of Energy projected the smart meter rollout would necessitate £13.5 billion in spending from 2013 through 2034. Over the same period, it estimated a £19.5 billion benefit to consumers and energy firms (with costs and savings stated in 2011 monetary values). The bulk of financing for this wide-scale smart meter adoption comes from the energy suppliers themselves, who typically shift some or all of those expenses to their customer base through rates. 4

Energy Efficient Lighting and Appliances

Switching to LED light bulbs and installing rated appliances cuts energy waste. These affordable upgrades make properties more modern and sustainable while reducing costs. According to the Energy Saving Trust,switching entirely over to LED light bulbs can significantly lower a household's environmental impact. Experts estimate that on average, changing all old-fashioned bulbs to LEDs in a single home can cut its carbon dioxide output by about 65kg annually. To put that reduction into perspective, that's the equivalent amount of CO2 emitted by driving a car roughly 220 miles, or approximately the distance between the cities of London and York. Therefore, by making a simple upgrade to use energy efficient LED lighting, families can achieve emissions savings comparable to over 200 miles of driving per year. It's a modest but meaningful way each household can reduce its carbon footprint. 5

Cost-Effective Solutions for Different Property Types

For flats, installing double-glazed windows and LED lighting can be a cost-effective way to enhance energy efficiency. For houses, adding external wall insulation can significantly reduce heat loss. Each property type will have unique needs, so it is crucial to tailor the upgrades accordingly.

Financial Incentives for Landlords

Government Schemes and Grants

Landlords can access various government grants and incentives to enhance the energy efficiency of their properties. In England, the Green Homes Grant offers vouchers covering up to two-thirds of the cost of eligible improvements, up to a maximum of £5,000. Meanwhile, in Scotland, the Home Energy Scotland Loan provides financial assistance for implementing energy efficiency upgrades covers up to 75% of total improvement costs, capped at £7,500 maximum per household, or £9,000 for qualified rural households.

Similarly, heat pump installation grants provide up to £7,500 in funding, or £9,000 with the rural subsidy. Homeowners can finance the remaining balance through an optional zero-interest loan offered. 4

Favourable Green Mortgages and Loans

Specialty green lending options feature preferential terms for energy efficient dwellings. Mortgages and loans tailored for sustainability upgrades incentivize landlords investing in high efficiency ratings.5

Tax Relief Benefits

Landlords pursuing energy efficiency also gain tax perks. Deductions apply for authorized green upgrades alongside asset depreciation over time for installations like solar panels.1

Measuring the ROI on Green Investments  

Energy Data Collection and Monitoring

Tracking detailed before and after energy usage accurately quantifies efficiency gains from upgrades implemented. This metrics analysis informs future decisions for advancing sustainability.

Calculating Cost Savings and Profit Gains

Comparing upgrade expenses against energy savings and rental revenue increases allows landlords to compute the tangible monetary returns realized from boosted efficiency.

Energy Savings and Rental Yield Increases

Upgrading to a more efficient boiler, for instance, could save tenants up to £345 annually on their energy bills according to the Energy Saving Trust. Loft insulation could save another £250, and cavity wall insulation could cut costs by up to £225 per year. 1 These savings can make a property more attractive, justifying a potential 10-20% increase in rental yield, depending on the local market and the property's improved EPC rating.

When planning for upgrades, it's essential to conduct a cost-benefit analysis, considering the upfront cost versus long-term savings and the potential for increased rental income. Additionally, staying informed about the latest government schemes can provide financial assistance to offset initial investment costs, making these upgrades more accessible and beneficial in the long run.

In summary, advancing BTL property energy efficiency produces multifaceted benefits for UK landlords and tenants alike—both financially and environmentally. Implementing these best practices allows landlords to lead more sustainable portfolios while unlocking higher profit through lowered expenses and increased rents.


Q: What are the most cost-effective ways to improve the energy efficiency of my BTL property?

A. The most cost-effective efficiency upgrades for BTL properties are enhanced insulation, LED lighting, weatherproofing and thermostat optimization. These provide the greatest return on investment.

Q: What government grants and incentives are available for BTL property energy efficiency upgrades?

A. Government grants and incentives available include subsidies for insulation, renewable energy installations, smart thermostats and efficiency improvements based on EPC ratings.

Q: How can I improve the EPC rating of my BTL property?

A. To improve EPC ratings, focus on insulation, glazing, heating, ventilation, and installing solar panels or heat pumps.

Q: What are the benefits of investing in energy efficiency for BTL properties?

A. Key benefits of boosting BTL property energy efficiency are lower bills, increasing rental yields, easier tenant acquisition and retention, improved marketability for sales and higher home valuations.

Q: How can I track and measure the impact of energy efficiency improvements on my BTL property?

A. Ways to track impact are getting EPC assessments done before and after, closely monitoring utility usage, and documenting related cost savings or profit increases attributable to upgrades.


1. Net zero, carbon emissions and homes: what’s the connection? | Released on : 2 November 2021 | Energy Saving Trust  
2. Advice Boilers article | Energy Saving Trust  
3. Rollout of smart meters publication | Date Published: 20 October 2023 | UK Parliament
4. Article: Home Energy Scotland Grant and Loan: overview | Home Energy Scotland
5. Green Homes Grant: make energy improvements to your home | Last updated: 19 July 2021 |

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