Caldes V8 Developer

Existing users install here
The leading spreadsheet based development appraisal viability software
Note:  We can also build models for you.  If you are looking for property development consultancy instead, click here .


"I have been using the Caldes Development Appraisal system since 2008 and have always found the software and support to be both reliable and professional."

Trevor Barlow - Aspire Modular Homes - 1/11/2018

"We love your software and find we can satisfy even the most nervous of funders with the appraisals and cash-flows it provides."

Chris Thomas - Director, CTD Consult -  30/10/2018

Caldes V8 Developer is the latest spreadsheet based development appraisal and cash flow tool from Caldes.

People choose Caldes for the following reasons:

  • Our project is summarised on a single easy to read page.  Click here to download an example.

  • The cost is £995 per licence for the first year including support.

  • Ongoing annual licence and support is only £245 per annum.

  • The maths is backed up by a full cash flow.

  • It is a UK based product, although we have sold all over the world and it will work in any currency or unit system.

  • The system is built from 3 components:

            Microsoft Excel.  Most people are familiar with Excel and so they find it easy to understand our workings.

            Our own Excel Template.

            Our own App which you download from the Microsoft Store. 

  • Because it is in Excel you can easily share files with other Excel users even if they do not have a license.

  • It works on both Mac and PC. 

  • View and edit projects on an iPad.  See manual for full details.

  • The appraisal format has changed little since the first projects back in 1995, so it is well known and trusted across the globe.

Download PDF!
Watch this 20 minute Youtube presentation for an idea of how Caldes V8 Works
Download your free trial now!


Better than a money back guarantee, Caldes offer an unrestricted free trial. Once your trial has finished, if you purchase the product any projects that you have modelled during the trial can continue to be used.


Caldes V8 is about Consistant Appraisal Analysis.  The V8 Developer model uses an updated version of the Caldes V7 system, an industry standard, tried and tested on billions of pounds worth of real property developments since 1995, used as an approved model by most UK banks, property companies and council planning departments.


If you are looking for funding from a bank, presenting to a board, or proving viability to a council planning department, V8 Developer provides full control over perfect reports, be it a quick appraisal, detailed cash flow or break down of unit information. 


Combine the consistancy of a professional system with the flexibility and readability of Excel.  Caldes V8 is now a Microsoft Excel Add-in, downloaded directly from the Microsoft Add-In store within Excel.

Microsoft Excel is well established as market leader in the spreadsheet world for power, speed and most importantly, reliability.


On starting a new project, let the 'Wizard' simply guide you through the development appraisal process, building your project step by step. 


The appraisal is the simplified presentation of your project, bringing together all the different elements in one easy to read report.

Click here to download an example.


Add up to 4 different tranches of land all with their own fees and stamp duty figures automatically calculated (or you can add your own figures).
Differentiate between Residential and Commercial stamp duty caluculations.
Add a fixed land price or target land price based on a profit requirement. 


Add core figures for your project such as construction fees, planning and building regulation costs, letting agent and sale agent fees, finance rate, VAT and recovery and bank arrangement fees. 


Add up to 50 different unit types and an unlimited number of subtypes, including internal (net) and external (gross) floor areas, rental or sale values, ground yet, yields, stamp duty, aquisition costs, income and cost dates, s-curve your construction costs, add contingency, lump sum costs and tenants inducements. 

You can also look at the sub type breakdown, such as Affordable percentage verses Open market. 


The cash flow provides an interactive month by month report of your project. Add in new costs or income directly to the cash flow or let the V8 developer work out the spread.

Add up to 4 different tranches of finance or adjust your VAT structure, item by item.

Automatically build cash flows from 1 month to 10 years.                                                             


Instantly see the effect of changes in rental or sale value, net or gross floor areas, land cost and build cost.

A mini appraisal is shown at the top of each sheet for an instant summary of how changes affect your project. 


Each license includes week-day telephone and email support.

We can also provide on-site or remote training.


YEAR 1:    Caldes V8 Developer costs £995 including 12 months support.

YEAR 2+:  Optional annual licensing and support costs £245 pa or £25 pm, from year 2 onwards if kept up to date.

Remote training is £95 per hour

On-site training is £300 plus reasonable travel expenses.

All prices exclude VAT.
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Download PDF!
To download the PDF brochure, click here .
Download your free trial now!