Property Calculators .

Development Exit Calculator

Calculate your development exit finance options, including exit bridge and refinance strategies

Development Finance Calculator

Structure your development finance with senior debt, mezzanine, and equity analysis

Permitted Development Calculator

Check PD rights for commercial to residential conversions under Class MA and other permitted development routes

GDV Calculator

Estimate Gross Development Value using Land Registry comparables and new-build premiums

Build Cost Calculator

Generate BCIS-aligned cost estimates with regional adjustments and contingencies

Profit on Cost Calculator

Calculate developer profit on cost percentage and assess deal viability

Residual Land Value Calculator

Work backwards from GDV to determine maximum land value for your development

Stretched Senior Calculator

Model stretched senior finance structures for higher leverage development deals

Mezzanine Finance Calculator

Calculate mezzanine layer costs and total blended rates for development projects

Equity Waterfall Calculator

Model profit distribution between investors and developers with hurdle rates

Loan to Cost Calculator

Calculate loan-to-cost ratios and determine borrowing capacity

Cost to Complete Calculator

Track remaining costs and forecast final project expenditure

CIL Calculator

Calculate Community Infrastructure Levy for your development project based on local authority rates and floor area

HMO & Conversion.

9 calculators

HMO Viability Calculator

Assess whether your HMO conversion or purchase will stack financially

HMO Finance Calculator

Calculate HMO mortgage options and stress test affordability

HMO Gross Rent Multiplier

Calculate gross rent multiplier to quickly assess HMO value

HMO Fire Safety Cost Calculator

Estimate fire safety compliance costs for your HMO property

HMO Licence Fee Calculator

Calculate HMO licensing costs by local authority

HMO Conversion Cost Calculator

Estimate costs to convert a property into an HMO

Article 4 HMO Appraisal

Check Article 4 direction status and planning requirements for HMOs

Student HMO Rent Calculator

Calculate achievable rents for student HMO properties

Minimo HMO Calculator

Calculate minimum room sizes and compliance for HMO standards

Leasehold & Title.

9 calculators

Lease Extension Calculator

Calculate the cost to extend your lease using the statutory formula

Service Charge Calculator

Calculate annual service charges for leasehold properties including management fees, insurance, and maintenance reserves

Ground Rent Calculator

Calculate ground rent obligations, escalation costs, and impact on property value for leasehold properties

Marriage Value Calculator

Calculate marriage value component for leases under 80 years

Ground Rent Capitalisation Calculator

Capitalise ground rent to determine freehold value contribution

Absent Freeholder Calculator

Calculate premium when freeholder cannot be found

Collective Enfranchisement Share Calculator

Calculate each flat's share of collective enfranchisement costs

Short Lease Value Drop Calculator

See how lease length affects property value

Peppercorn Ground Rent Impact Calculator

Understand the impact of peppercorn ground rent reforms

Title Split & Planning Gain.

6 calculators

Title Split Calculator

Determine if splitting a property title adds value

Title Split Profit Calculator

Calculate potential profit from title splitting strategy

Title Plan Boundary Change Calculator

Calculate costs for Land Registry boundary changes

Planning Gain Uplift Calculator

Calculate value uplift from planning permission

Airspace Development Calculator

Value airspace rights above existing buildings

Garden Plot Subdivision Calculator

Calculate value of subdividing garden for development

Buy-to-Let & Portfolio.

13 calculators

Buy to Let Calculator

Calculate buy-to-let profitability, rental yield, monthly cashflow and ROI for investment properties

Stamp Duty Calculator

Calculate Stamp Duty Land Tax for property purchases including additional property surcharge

BTL DSCR Calculator

Calculate Debt Service Coverage Ratio for buy-to-let mortgages

BTL ICR Calculator

Calculate Interest Coverage Ratio for rental stress testing

BRRR Calculator

Model Buy-Refurbish-Refinance-Rent strategy returns

Rent to Rent Profit Calculator

Calculate profit margins for rent-to-rent deals

Portfolio LTV Blending Calculator

Calculate blended LTV across your property portfolio

Section 24 Tax Impact Calculator

Calculate the impact of Section 24 mortgage interest relief changes

Portfolio Refinance Calculator

Model refinancing options across your property portfolio

BTL Mortgage Calculator

Calculate how much you can borrow on a buy-to-let mortgage based on rental income, DSCR requirements, and stress test rates

Holiday Let Mortgage Calculator

Calculate mortgage payments, projected income, and profitability for UK holiday let properties with realistic occupancy rates

Ltd Company BTL Calculator

Compare personal vs limited company ownership for buy-to-let. Calculate Section 24 impact and see which structure saves more tax

Interest Only BTL Calculator

Compare interest-only vs capital repayment BTL mortgages. See cashflow difference and total costs over the mortgage term

Bridging & Specialty Finance.

5 calculators

Bridging Loan Calculator

Calculate bridging loan costs, fees, and total repayment

Refurbishment Bridge Calculator

Calculate light and heavy refurbishment bridging options

Bridge to Let Calculator

Model bridge-to-let exit strategies and refinance options

Auction Bridge Calculator

Calculate bridging for auction purchases with 28-day completion

Retained vs Rolled Calculator

Compare retained and rolled-up interest options

Serviced Accommodation & Holiday Let.

4 calculators

Serviced Accommodation Profit Calculator

Calculate profitability of serviced accommodation ventures

SA Finance Calculator

Calculate finance options for serviced accommodation properties

Holiday Let Tax Calculator

Calculate tax implications for furnished holiday lets

SA Occupancy Calculator

Model occupancy rates and breakeven analysis for SA

Commercial Property.

5 calculators

Commercial Yield Calculator

Calculate commercial property yields and cap rates

ERV Rent Calculator

Estimate Estimated Rental Value for commercial property

Commercial Ground Rent Calculator

Calculate and capitalise commercial ground rents

FRI Lease Cost Calculator

Estimate Full Repairing and Insuring lease costs

VAT on Commercial Property Calculator

Calculate VAT implications for commercial property transactions

Refurbishment & Build Costs.

6 calculators

Refurb Cost Calculator

Estimate refurbishment costs per square metre

Loft Conversion Calculator

Calculate loft conversion costs, added value and ROI for your property

EPC Upgrade Calculator

Calculate costs to improve your EPC rating

Retrofit Payback Calculator

Calculate payback period for energy efficiency retrofits

Kitchen Renovation ROI Calculator

Calculate return on investment for kitchen renovations

Fire Door Compliance Calculator

Calculate fire door compliance costs for rental properties

Ultra-Niche Calculators.

7 calculators

Knotweed Valuation Impact Calculator

Calculate how Japanese knotweed affects property value

Cladding Remediation Cost Calculator

Estimate cladding remediation costs for affected buildings

EWS1 Risk Calculator

Assess EWS1 risk and potential impact on property value

Party Wall Award Cost Calculator

Estimate party wall award and surveyor costs

Neighbour Dispute Devaluation Calculator

Estimate property value impact from neighbour disputes

Slow Market Vendor Motivation Calculator

Assess vendor motivation and negotiation leverage

Absent Freeholder Risk Score

Score the risk of buying with an absent freeholder