A loft conversion or a kitchen extension feels like a great investment. But over the last two years, material costs and labour shortages have made home renovations a financial minefield. I am seeing projects consistently run 30% to 40% over initial quotes.
This is where 'lifestyle creep' literally takes the roof off your house.
The 30% Contingency Rule
If a builder quotes you £50,000, you need £65,000 in cash before you even think about breaking ground. The plumbing will be worse than expected. You will want the slightly nicer tiles. The scaffolding will need to stay up an extra month.
Do not rely on a credit card to bridge the gap. Stress-test the absolute worst-case scenario. If the project costs 40% more than expected, does it wipe out your Tier 1 safety net? If the answer is yes, you cannot afford to start the project yet. Delay, save, and protect your peace of mind.