New Build Premium Calculator
Extra you pay for new-build over equivalent resale.
Calculate the premium paid for a new-build property compared to an equivalent resale home in the same area. Enter new build price and see the result instantly.
What this tool does
Enter new-build price and comparable resale price. The tool shows the premium in cash and percentage terms.
Enter Values
Formula Used
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Disclaimer
Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.
New-build homes usually sell at a premium over equivalent resale properties. Typical premium is 10-20%. A 300,000 new build next to a 260,000 resale has a 40,000 or 15% premium. Part of the premium is genuine value — warranty, energy efficiency, no renovation work. Part is developer pricing power. A surveyor's market report comparing sold prices for similar local homes is the cleanest way to size the premium on any specific property.
Quick example
With new build price of 300,000 and equivalent resale price of 260,000, the result is 40,000.00. Change any figure and watch the output shift — it's often more useful to see the pattern than to memorise the formula.
Which inputs matter most
You enter New Build Price and Equivalent Resale Price. Not every input has equal weight. Flip one at a time toward extreme values to feel which ones move the needle most for your situation.
What's happening under the hood
Straight difference between new build asking price and comparable resale. Percentage expressed against the resale benchmark. The formula is listed in full below. If the number looks off, you can retrace the calculation by hand — that's the point of showing the working.
What the headline rate hides
Lenders quote a rate; what you pay is a blend of that rate, fees, insurance, and any early-repayment penalty built into the product. The figure here isolates the core interest cost so you can compare like-for-like across deals — then add the other costs separately before signing anything.
What this doesn't capture
The figure excludes arrangement fees, valuation costs, legal fees, insurance, and any early-repayment charges — those can add several thousand to the headline cost. Rate changes at renewal for fixed-term deals will shift the picture further. Use this for the core interest/principal math and add the other costs on top.
New build premium produces a cash and percentage figure based on the inputs provided.
Inputs
This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.
Sources & Methodology
Methodology
Straight difference between new build asking price and comparable resale. Percentage expressed against the resale benchmark.
References
Frequently Asked Questions
Is a new build always overpriced?
How to spot inflated premium?
Does the premium fade?
Help-to-Buy style incentives?
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