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Brick & Balance

BRR Deal Check

Live calculation

Deal inputs

£
£
£
£
£

Initial finance

%
%
yrs

Illustrative refinance

£
%

Results

Estimated monthly cashflow £0

Project summary

Total project cost £0
Initial loan £0
Cash invested £0
Monthly mortgage £0

Return indicators

Gross yield 0%
Net yield before finance 0%
Annual net cashflow £0
Cash-on-cash return 0%

Downside stress test

Interest rate +2% £0 pcm
Rent falls 10% £0 pcm
Both happen together £0 pcm

Illustrative refinance

Potential refinance loan £0
Potential cash release £0
Estimated cash remaining £0
Capital potentially recycled 0%
Calculation assumptions
  • Cash invested equals the deposit, refurbishment budget, and entered purchase/finance costs.
  • Operating costs should include your allowance for management, insurance, maintenance, service charges, ground rent and voids where relevant.
  • Net yield is annual rent less operating costs, divided by total project cost, before mortgage finance and tax.
  • Refinance figures ignore valuation, legal, broker, arrangement, early-repayment and other refinance costs.
  • All outputs are estimates based entirely on the figures entered.
Educational illustration only. Not financial, mortgage, tax, legal or investment advice. Verify all figures and obtain appropriate professional advice.

See the numbers, not just the headline.

Illustrative 2-bed BRR using the same default assumptions as the live Deal Check.

1 Evidence

What the data must support

Sold comparables Achievable rent Local demand Viable exit
Use the checklist

2 True cost

All-in, not just purchase price

Purchase price
£150,000
Purchase & finance costs
£5,250
Refurbishment
£40,000
Total project cost
£195,250
Deposit at 75% LTV
£37,500
Cash invested
£82,750

3 Return

Income and cashflow

Monthly rent
£950
Operating costs
−£250
Mortgage
−£563
Monthly cashflow
+£138
Gross yield
7.6%
Net yield before finance
4.3%
Cash-on-cash return
2.0%

4 Downside

Stress-test the risk

Interest rate rises by 2% −£50 pcm
Rent falls by 10% +£43 pcm
Both happen together −£145 pcm
Test your figures

5 Exit

How the capital might recycle

Post-works value
£220,000
Refinance at 75% LTV
£165,000
Potential cash release
£52,500
Estimated cash remaining
£30,250
Capital potentially recycled
63.4%
Change the assumptions

Illustrative example only. Results depend on the figures entered and exclude tax and refinance costs. Verify all assumptions before making a decision.

“The numbers don’t make the decision for you. They make the assumptions and the risks visible.”


Use the tools yourself.

Due Diligence Toolkit

Spreadsheets, checklists and templates to analyse deals properly.

Preview toolkit

Property Viewing Checklist

A practical checklist so you don’t miss the important things.

Preview checklist

Investor Starter Roadmap

Step-by-step guidance from first steps to building momentum.

Preview roadmap

Built from real-world decision making

Founder, Brick & Balance

Dieter Denham

Methodical. Evidence-based. Conservative. Scalable.

I created Brick & Balance after seeing how often property content focused on headline returns while leaving the assumptions, true costs and downside in the background.

Here, every tool is designed to make the working visible—so you can test the numbers, challenge the assumptions and make better-informed decisions.

Read the founder story
Transparent assumptions See what drives every result.
Practical analysis tools Built to help you apply the method.
Responsible education Clear guidance without the hype.

Educational content only. Not financial, tax, legal or investment advice.