Cost Calculators
Quickly estimate the cost of your home project. Choose between our extension cost calculator and our dedicated loft conversion calculator.
Select a Calculator
Pick the calculator that best matches your project type to receive an instant online estimate.
Extension Cost Calculator
Get an instant guide price for your single-storey, double-storey or kitchen extension with Timber Construction Ltd’s extension cost calculator.
Open Extension CalculatorLoft Conversion Calculator
Planning a loft conversion? Use our specialist loft conversion cost calculator to estimate the budget for your new bedroom, office or living space.
Open Loft Conversion CalculatorWhy Use Our Construction Cost Calculators?
Timber Construction Ltd provides accurate online estimates for home extensions and loft conversions across Chelmsford and the wider Essex region. Our calculators are designed to help homeowners budget confidently before starting a construction project, giving clear insight into expected costs based on size, materials and specification levels.
Whether you are planning to create extra living space, add a new bedroom, or transform your home layout, our tools are ideal for early cost planning. Once you receive your estimate, our experienced team can provide expert advice, design options, planning guidance and a full quotation tailored to your property.
Serving Chelmsford and the CM Postcode Areas
We proudly work across Chelmsford, Harlow, Brentwood, Braintree, Maldon, Dunmow, Epping, Ongar, Witham, Billericay and surrounding CM1–CM24 postcodes, delivering trusted construction services including extensions, loft conversions, garden rooms and full property renovations.
Start Your Project With Confidence
Use our calculators today to get a reliable starting price for your extension or loft conversion. With transparent estimates, professional guidance and high-quality workmanship from Timber Construction Ltd, you can turn your property goals into reality with ease.
