Pollution-free properties secure 57% more rental income

The latest research by leading lettings management platform, Howsy, has found that areas, where CO2 emissions are at their lowest, are home to much higher average rental costs compared to those with higher levels of CO2.

Howsy looked at the average cost of renting across 65 of the largest towns and cities based on population size, as well as the CO2 emissions per capita in each location, and what impact this had on the cost of renting.

While many living things emit CO2 when they breathe, it is widely considered as a pollutant due to the excessive levels produced by cars, planes and power plants, as well as other land uses and the burning of fossil fuels.

The research shows that when looking at areas based on the CO2 emissions per capita, there is a clear trend whereby areas home to a lower level cost more when it comes to the average rent, compared to those with much higher levels.  

The lowest bracket, areas where there are 3.00-4.00 CO2 emissions per capita, are home to an average rental price of £800. This drops to £760 per month in areas with 4.01-5.00 Co2 emissions per capita, and again to £685 in the 5.01.6.00 threshold and £559 in the 6.01-7.00 threshold.

In areas with the highest level of CO2 emissions at 7.01 per capita or higher, the average rent is just £511, a 57% difference when compared to the other end of the Co2 rental scale.

When looking at the 10 worst areas with the highest levels of CO2 per capita, just one is home to a higher average rent when compared to the current UK average of £953 per month – Crawley where rents average £990 per month.

Swansea is the worst area for a mix of poor rental returns and pollution with 22.43 tons of CO2 emitted per capita and an average rental price of just £552.

Similarly, Middlesborough, Doncaster, Warrington and Newport are home to high levels of CO2 emissions and below average rental prices.

But it’s not all bad news if you’re a tenant. When looking at the top 10 areas with the lowest CO2 emissions per capita there are seven locations that come in with an average rent below that of the current UK average.

Plymouth (£604), Ipswich (£663), Southampton (£799), Luton (£813), Worthing (£832), Southend (£843) and Bournemouth (£867) are all cheaper than the UK average when it comes to renting with CO2 emissions per capita coming in below 3.5 tons per capita.

Founder and CEO of Howsy, Calum Brannan, commented:

“As a landlord, looking to less polluted areas seems to provide the best rental income when it comes to a buy-to-let investment and it’s interesting to see how less pollution directly correlates with higher rental prices.

As a tenant, the cost of some fresh air is likely to cost you when looking for a place to let, but there are still plenty of pockets that are not only home to a low level of Co2 emissions but also below average rental prices.

Unfortunately for many, the nature of renting will mean fresh air is low on the list of requirements for a home, but it’s certainly worth remembering if you’re looking to invest in a buy-to-let and could be the cure when turning a profit despite the government’s attempts to dampen appetites in the sector.”

Emissions and the average rent
Category – CO2 emission per capita (tons)
Average monthly rent
Difference between the top and bottom bracket
3.00-4.00
£800
56.56%
4.01-5.00
£760
5.01-6.00
£685
6.01-7.00
£559
7.01 +
£511
UK average = 5.32
£953
Notes:
> Based on the top 65 cities and towns by population size
> Categories of emission per capita vs average rent
Ranking – by highest emissions per capita
City/town
CO2 emissions per capita 2017 (tons)
Average rent (2019)
Swansea
22.43
£552
Middlesbrough
12.06
£469
Doncaster
6.67
£503
Warrington
6.61
£635
Newport
6.12
£539
Preston
5.81
£564
Wakefield
5.77
£548
Barnsley
5.59
£494
Aberdeen
5.43
£735
Crawley
5.32
£990
Ranking – by lowest emissions per capita
City/town
CO2 emissions per capita 2017 (tons)
Average rent (2019)
Southampton
3.62
£799
London
3.61
£1,697
Bournemouth
3.48
£867
Plymouth
3.4
£604
Exeter
3.39
£1,084
Luton
3.24
£813
Southend
3.23
£843
Brighton
3.22
£1,298
Worthing
3.11
£832
Ipswich
3.02
£663

 

Sources
Emissions data
Average private rent

Properganda PR

National and local media coverage for property businesses. Journo quotes delivered in minutes.

You May Also Enjoy

Breaking News

Mortgage approvals down 11% in May

The latest mortgage approval data from the Bank of England show that: –   Mortgage approvals on house purchases for May sat at 56,205 down (-14.9%) from 66,034 seen in April. Approvals are down (-10.8%) when compared to the 62,980 seen in May 2025. This annual decline was expected due to wider political and economic uncertainty;…
Read More
Breaking News

Money and Credit – May 2026

Overview These monthly statistics on the amount of, and interest rates on, borrowing and deposits by households and businesses are used by the Bank’s policy committees to understand economic trends and developments in the UK banking system. Key points: Net borrowing of mortgage debt by individuals decreased to £2.9 billion in May, from £4.4 billion…
Read More
Breaking News

More than 5,300 land listings currently available in Britain

The latest research from LandSale, the property portal dedicated to land and rural property, has revealed that there are an estimated 5,373 land listings currently available across Great Britain, with almost a quarter, 24.9%, listed in the past 30 days. The analysis examined all land-only listings currently being marketed across Great Britain. LandSale assessed the…
Read More
Breaking News

Build to rent completions rise 11.7%

New research from Zero Deposit reveals that the UK’s build-to-rent sector has continued its strong growth trajectory in 2026, with both delivery and investment volumes increasing year on year as demand for professionally managed rental accommodation remains robust. As the sector expands and operators manage larger portfolios of high-value rental homes, protecting rental income is becoming…
Read More
Estate Agent Talk

Has the doer-upper lost its shine?

First-time buyers, once the doer-upper’s natural market, have changed their priorities – and what they want now is certainty. For decades, the doer-upper held a particular place in British life: the tired house bought cheap, done up over years of weekends and sold on as the home it always promised to be. It was a…
Read More
Crowded beaches - Clacton-on-Sea in Essex
Breaking News

1 in 7 consider moving home to manage cooling costs in hotter weather

Two in five adults (40 per cent) say they would prefer to invest in home improvements to reduce overheating from the outset, rather than rely on cooling devices Three in 10 (30 per cent) are concerned about the impact of using electricity for cooling on their energy bills, while over four in 10 (44 per…
Read More