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Investment Areas
View all results (15)
Reports & Insights
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Case Studies
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Investment Opportunities
View all results (15)
Investment Areas
Showing 12 out of 15 Results
St Albans
Sub-20 minute London connectivity and strong owner-occupier demand support long-term capital stability.
Stratford
Major transport hub with Elizabeth Line connectivity and strong long-term demand fundamentals.
Bedford
Direct Thameslink connectivity and competitive entry pricing support resilient commuter-led rental demand.
Dunstable
Proximity to fast Thameslink services via Luton Parkway and competitive entry pricing support strong rental demand.
Luton
Sub-30 minute London rail access and strong employment demand support high rental yields and consistent tenant demand.
Bishop's Stortford
Fast Liverpool Street connectivity and strong professional demand support long-term rental stability.
Hertford
Direct rail access to Liverpool Street and strong owner-occupier demand support long-term capital stability.
Hatfield
Fast King’s Cross connectivity and strong rental demand support resilient commuter-led investment fundamentals.
Welwyn Garden City
Fast King’s Cross connectivity and strong professional demand support long-term capital stability.
Stevenage
Fast King’s Cross connectivity and large-scale regeneration support strong commuter-led rental demand.
Loughton
Direct Central Line access and strong commuter demand support long-term capital stability.
Maidstone
Direct rail access to Central London and a strong regional employment base support resilient rental demand.
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Reports & Insights
Showing 12 out of 15 Results
Commuter Belt Freeholds Outperform
Why Commuter Belt Freeholds Outperform Flashy New Builds: An Asset Management Perspective
Test Name 1
Stratford Serviced Apartment Purchased in July 2024 · 88% occupancy
Test Name 2
Stratford Serviced Apartment Purchased in July 2024 · 88% occupancy
Test Name 3
Stratford Serviced Apartment Purchased in July 2024 · 88% occupancy
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Case Studies
Showing 12 out of 15 Results
Teynham 1-Bed Apartment
Teynham 1-Bed Apartment Purchased February 2026 · Fully Let at £900 pcm
Rochester 2-Bed Terraced House
Rochester 2-Bed Terraced Home Purchased March 2025 · Refurbished & Refinance Unlocks Equity
Gidea Park 2-Bed Flat
Gidea Park 2-Bed Flat Purchased March 2025 · Fully Let at £1,550 pcm
Laindon Links 3-Bed House
Laindon 3-Bed House Purchased March 2025 · 5% Below Market Value
Stevenage Old Town 2-Bed House
Stevenage Old Town 2-Bed House Purchased March 2025 · 6% Below Market Value
Fresh Wharf Road, Barking
Barking Riverside 1-Bed Apartment Purchased March 2025 · £20k Below Market Value
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Investment Opportunities
Showing 12 out of 15 Results
Tilbury 2-Bed Freehold Investment
Tilbury 2-Bed Freehold · Projected 7.4% Gross Yield
Rainham 2-Bed Maisonette Investment
Fyfield Road 2-Bed Maisonette · Projected 8.06% Gross Yield
Broxbourne 2-Bed Flat Investment
Clyfton Close 2-Bed Flat · Projected 8% Gross Yield
Chadwell St Mary 2-Bed
2-Bed Chadwell St Mary · 95% occupancy
St Cross Court Hoddesdon 2-Bed
St Cross Court 2-Bed Hoddesdon Purchased 2026 · 95% occupancy
Test Name 1
Stratford Serviced Apartment Purchased in July 2024 · 88% occupancy
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Our latest Investor Success Stories
2 Bed flat in Stratford
See how strategic financing turned a modest rental yield into a strong return on invested capital
7.3%
 ROCE
2 Bed flat in Stratford
See how strategic financing turned a modest rental yield into a strong return on invested capital
7.3%
 ROCE
2 Bed flat in Stratford
See how strategic financing turned a modest rental yield into a strong return on invested capital
7.3%
 ROCE
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Schedule your free 45 minute call to explore East London and commuter corridor property investments, and see if they align with your goals. It’s your chance to ask questions, with no pressure and no obligation.

Buy-to-Let Investment Calculator

Analyse rental yield, stamp duty, mortgage costs and total cash required before investing in a single buy-to-let property.
Scroll down to calculate your investment
Target 7 to 8% Gross Yield
Income-focused buy-to-let assets selected in high-demand London commuter markets.
Long-Term Capital Growth
Properties positioned within regeneration corridors and infrastructure-led growth areas.
Professionally Managed Assets
Full lifecycle asset management covering acquisition, letting, and ongoing oversight.

Buy-to-Let Calculator: Rental Yield, Cash Flow and Investment Returns

Our buy-to-let calculator allows investors to quickly estimate rental yield, cash flow and total capital required when purchasing an investment property in the UK.

By adjusting purchase price, rental income, mortgage assumptions and deposit levels, investors can understand how a property may perform before committing capital. The calculator estimates both gross rental yield and net yield after costs, including mortgage payments, management expenses and transaction costs.
‍
This helps investors compare opportunities across different markets and evaluate whether a property aligns with their income or growth strategy. Investors exploring potential locations can review Unity’s investment areas, or model long-term portfolio growth using the portfolio projection tool.
£100,000
£1,000,000
£ 
$200,000
£25,000
£500,000
£ 
$200,000
5 Years
35 Years
$200,000
1.5%
9%
% 
$200,000
£800
£5,000
£ 
$200,000
England & Northern Ireland
Property location is required because Stamp Duty rates differ by region
i
HMRC charges a higher rate of Stamp Duty if you already own another property.
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Monthly Mortgage
£165,000
Amount per month
i
An estimate of your monthly repayment, based on loan amount, interest rate, and term. Actual payments may vary.
Stamp Duty
£12,900
Based on UK rates
i
Estimated using current UK thresholds. Actual liability depends on property price and location, and buyer status.
Other Fees
£4,400
Legal, searches, admin
i
Includes legal costs, searches, and admin. Set at approximately 2% of the purchase price for illustration.
Total cash needed
£76,300
Total investment needed
i
Upfront cash needed including deposit, Stamp Duty, legal fees, and estimated refurb costs (£4,000).
Loan to Value
75%
Mortgage ÷ Property price
i
The mortgage amount ÷ property price × 100. Indicates how leveraged the investment is.
Rental Income
£14,400
Annualised from monthly
i
Annual rental income based on the monthly rent you entered. Assumes full occupancy.
Mgmt/Maintenance
£2304
Calculated at 16% of rent
i
Includes letting agent fees, maintenance, and building insurance. Estimated at 16% of rental income.
Gross Rental Yield
6.55%
Rent ÷ Property price
i
Calculated as annual rent ÷ purchase price × 100. Shows return before costs and taxes.
ROCE %
4.24%
Profit ÷ Investment
i
Return on Capital Employed: annual rental profit ÷ cash invested × 100. Excludes property growth.
Net Cashflow PCM
£278.13
Net monthly cashflow
i
Estimated monthly net cashflow after mortgage, management fees, and maintenance.
Growth Return
11.17%
Based on 4% growth
i
Estimated annual return from property value appreciation (assumes 4% p.a.)
Combined Return
15.4%
Cash yield + growth return
i
Total annualised return including both rental income (ROCE) and property growth.
Illustrative only. Figures are estimates based on user inputs and assumptions. Not intended as financial advice. Investments carry risk and actual returns, fees, and costs may vary.
Download PDF Summary
Includes all your inputs and calculated metrics.
Investment summary
Prop
£220k
Dep
£55k
Rate
5%
Rent
£1.2k

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Understanding Your Results

Your calculator results are designed to give a clear picture of your investment. Each metric shows a different aspect of performance, from upfront costs to long-term returns. Here’s a quick guide to what they mean.

Property Price - Investment Overview

The agreed purchase price of the property. This figure is the foundation of your investment calculations, as all other metrics are based on it. Compare current Investment Opportunities to see typical property prices.

Stamp Duty - UK Property Tax

Stamp Duty Land Tax (SDLT) is a UK government property tax applied when purchasing property. Buy-to-let purchases are subject to an additional surcharge, which affects the total upfront cost of an investment. You can review the current thresholds and rates in the HMRC Stamp Duty Land Tax guidance.

Other Fees - Legal, Searches, Admin

These include legal costs, searches, admin charges and any broker or mortgage arrangement fees. For simplicity, we’ve estimated this at 2% of the purchase price, though in many cases the figure may be lower. This conservative allowance helps you plan with confidence and avoid surprises.

Total Cash Needed

This is the sum of your deposit, mortgage fees, Stamp Duty (if applicable), legal and other fees, plus an assumed refurbishment cost of £4,000. It gives you a snapshot of the total upfront capital required to get the property ready for rental.

Loan to Value (LTV)

The LTV shows the proportion of the property price financed through a mortgage. Calculated as Mortgage ÷ Property Price × 100, it indicates your borrowing level for property investments. Lower LTV often reduces lender risk and can help secure better mortgage rates for investment properties.

Annual Rental Income - Expected Rent from Your Property

This is the total rent you could receive over a year. Use it to calculate gross rental yield, net income, and overall investment performance. Accurate rental estimates are essential for evaluating the profitability of your investment property.

Management and Maintenance - Estimated Running Costs

This includes letting agent fees, property maintenance, and building insurance, calculated at approximately 16% of annual rent. Understanding these costs helps you see the net cashflow and profitability of your investment.

Gross Rental Yield

Gross Rental Yield is calculated by dividing the annual rental income by the property purchase price and expressing it as a percentage. This metric illustrates the potential return from rent alone, before any costs or fees. Learn more about investment properties and rental returns to see how this figure can guide your property investment decisions.

Return on Capital Employed (ROCE)

ROCE measures the efficiency of your invested cash. It’s calculated as annual rental profit ÷ cash invested × 100, excluding property growth. This metric helps you understand how effectively your capital is working to generate rental income.

Net Cashflow PCM (per calendar month)

This shows the estimated monthly income you could receive after deducting mortgage payments, letting agent and management fees, maintenance, and building insurance. It illustrates the net cash you might generate each month from your property investment, helping you assess short-term profitability and plan your finances effectively.

Growth Return

Estimated at 4% per year, based on typical UK property market growth. Shows how much your property could increase in value annually, helping you understand the long-term capital appreciation potential of your investment.

Combined Return

Calculates your total potential return by combining annual rental profit with expected property growth, divided by cash invested × 100. Helps you compare investment opportunities and understand the overall profitability of your property investment.

Why Professional Investors Focus on ROCE, Not Just Yield

The Yield Trap

Many novice investors compare properties solely on rental yield – the annual rent as a percentage of the property price. While a 7% yield sounds attractive, it doesn’t tell the full story. Yield ignores leverage, one of the most powerful tools in property investment.

The ROCE Advantage

Return on Capital Employed (ROCE) measures the return on your actual cash invested, rather than the total property value. This gives a more accurate picture of how effectively your money is working for you. For example, a £250,000 property with a £75,000 investment can deliver 24.7% returns on your cash, even though the rental yield is only 7.2%.

This is why professional investors focus on return on capital rather than headline yield alone. At Unity, ROCE forms a core part of our investment criteria when evaluating buy-to-let opportunities.

Real World Comparison

Investment
Cash Invested
Annual Return
Savings Account
£75K,000
£3,375 (4.5%)
Stock Market
£75,000K
£6000-£7500 (8-10%)
BTL Property
£75,000K
£13,344 (17.8%)
£5,844 rental profit +
£7,500 estimated capital growth
This example highlights how property investment can outperform traditional savings or stock market returns when leverage is used effectively. Plus, rental income often increases with inflation, while mortgage payments remain fixed, enhancing your long-term cashflow.

Figures are illustrative and based on example assumptions. Actual returns may vary depending on market conditions, property location, and individual circumstances.

Property Investment Calculator FAQs

Have questions about how property investments work or how to use our calculator? Our frequently asked questions cover everything from calculating rental yield and ROCE to understanding total cash requirements, helping you make smarter investment decisions.

What is a good rental yield for a London property?

In outer London and commuter areas, 5.5-8% gross yields are achievable and considered strong. Central London typically offers 3-4% yields but with historically higher capital growth potential over the long term. Our rental yield calculator London results show the best opportunities are in the commuter corridor.

How accurate is this BTL profit calculator?

Our BTL profit calculator uses current market data and realistic assumptions including:

- Actual mortgage rates from BTL lenders
- Conservative 3% annual growth (London 20-year average is 5.2%)
- Real management and maintenance costs
- Current tax regulations

Should I use a rental property calculator before viewing?

Absolutely. Using a rental property calculator first helps you:
‍
- Set realistic budgets
- Compare areas objectively
- Avoid emotional decisions
- Negotiate from a position of knowledge

What’s the difference between yield and ROCE?

Yield = (Annual Rent ÷Property Price) × 100
- Example: £18,000 rent ÷ £250,000 property = 7.2% yield

‍ROCE = (Annual Income -Annual Expenses) ÷ Cash Invested × 100
- Example: (£18,000 income - £12,156 expenses) ÷ £75,000 invested = 7.8% ROCE

ROCE shows your actual return considering both expenses AND leverage, making it the professional investor's key metric.

Can I trust online investment property calculators?

Our investment property calculator is built using real market data and conservative assumptions. However, always:

- Verify rental estimates with local agents
- Get accurate insurance quotes
- Factor in void periods (we suggest 1 month annually)
- Consult a tax advisor for your specific situation

How do I calculate buy to let profit?

Our buy to let profit calculator automatically factors in:
‍
- Gross rental income
- Mortgage interest payments
- Management fees (typically 8-10%)
- Insurance and maintenance
- Void periods
- Annual expenses

The result shows your true monthly and annual profit after all costs. 

What’s a good property investment ROI?

Using our property investment ROI calculator, we typically see:

- Cash returns (ROCE): 15-25% in good areas
- Total returns: 20-35% including modest growth
- Minimum target: 15% to justify the investment 

Remember, ROI should always be calculated on your actual cash invested, not the property value.

Can I use this as a property income calculator?

Yes, our tool functions as a comprehensive property income calculator showing:

- Gross rental income
- Net income after expenses
- Tax implications (basic rate)
- Cash flow projections
- Annual income totals

How does the investment property yield calculator work?

Our investment property yield calculator uses the standard formula:

- Gross Yield: (Annual Rent ÷ Property Price) × 100
- Net Yield: (Annual Profit ÷ Property Price) × 100

But uniquely, we also calculate ROCE to show your leveraged returns.

Is this suitable as an investment property profit calculator?

Yes, our investment property profit calculator provides detailed profit analysis including:
- Monthly cash flow
- Annual net profit
- Return on investment
- Break-even analysis
- 5-year projections

Start Your Investment Journey with Unity Today

Understanding exactly how to buy investment property is the first step to building wealth through London property. Our proven process removes complexity while maintaining complete transparency.
Next Step:
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Let’s talk property investments - your way
Whether you’re just getting started or ready to take the next step, we’re here for a no pressure, no obligation call, with just honest insight.
Choose a 15 minute intro chat or a full 45 minute consultation.
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Choose a time that suits you

Schedule your free 45 minute call to explore East London and commuter corridor property investments, and see if they align with your goals. It’s your chance to ask questions, with no pressure and no obligation.
26 August 2025 £220,000 £55,000 5.50% 10 years Yes £1200 £165,000 £12,900 £4,400 £78,750 75% £14,400 £2304 6.55% 4.24% £278.13 11.7% 15.4%