BUILD COST CALCULATOR

Cost Calculator

We have created four advanced cost calculators for extensions, loft conversions, refurbishments, and new builds. Simply select the appropriate calculator, enter your project's details, and it will estimate your build costs quickly. These estimates provide a good indication of costs, but you can save more by planning ahead, hiring an experienced construction and architecture firm, and choosing the right builder. With our practical experience and thorough construction inspection approach, we help you avoid issues, reduce stress, stay on schedule, and control your budget.

Director's Message

In the construction industry, it's quite common for builders to provide attractive initial quotes, only to introduce additional charges and fees as the project progresses. To avoid these surprises, consider hiring a reputable construction and architectural firm. They can handle the technical design of your project and prepare a comprehensive tender package, ensuring you select trustworthy builders and your project complies with building regulations right from the start.
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Build Cost Calculator

EXTENSION

BUILD QUALITY EXPLAINED
Standard – e.g. Howdens Kitchen, Topps Tiles, UPVC windows.
Good – e.g. Pogenpol Kitchen, Porcelain tiles, Aluminum windows.
Excellent – e.g. Bespoke Kitchen, natural materials, Farrow and Ball and bespoke wardrobes.

50m2
0m2300m2

The build cost will depend on several variables including the complexity of the design, extent of structural works and level of fixtures, fittings and material finishes. It does not include professional/legal fees, statutory fees, environmental audits, other third-party fees, VAT or planning obligations (CIL, Section 106). Prices are updated at regular intervals but may not fully reflect inflation and the effects of international health or political crises. Always ask your architects to conduct due diligence on your timescale and budget considerations.

NEW BUILD

BUILD QUALITY EXPLAINED
Standard – e.g. Howdens Kitchen, Topps Tiles, UPVC windows.
Good – e.g. Pogenpol Kitchen, Porcelain tiles, Aluminum windows.
Excellent – e.g. Bespoke Kitchen, natural materials, Farrow and Ball and bespoke wardrobes.

50m2
0m2300m2

The build cost will depend on several variables including the complexity of the design, extent of structural works and level of fixtures, fittings and material finishes. It does not include professional/legal fees, statutory fees, environmental audits, other third-party fees, VAT or planning obligations (CIL, Section 106). Prices are updated at regular intervals but may not fully reflect inflation and the effects of international health or political crises. Always ask your architects to conduct due diligence on your timescale and budget considerations.

REFURBISHMENT

BUILD QUALITY EXPLAINED
Standard – e.g. Howdens Kitchen, Topps Tiles, UPVC windows.
Good – e.g. Pogenpol Kitchen, Porcelain tiles, Aluminum windows.
Excellent – e.g. Bespoke Kitchen, natural materials, Farrow and Ball and bespoke wardrobes.

50m2
0m2300m2

The build cost will depend on several variables including the complexity of the design, extent of structural works and level of fixtures, fittings and material finishes. It does not include professional/legal fees, statutory fees, environmental audits, other third-party fees, VAT or planning obligations (CIL, Section 106). Prices are updated at regular intervals but may not fully reflect inflation and the effects of international health or political crises. Always ask your architects to conduct due diligence on your timescale and budget considerations.

LOFT CONVERSION

BUILD QUALITY EXPLAINED
Standard – e.g. Howdens Kitchen, Topps Tiles, UPVC windows.
Good – e.g. Pogenpol Kitchen, Porcelain tiles, Aluminum windows.
Excellent – e.g. Bespoke Kitchen, natural materials, Farrow and Ball and bespoke wardrobes.

50m2
0m2300m2

The build cost will depend on several variables including the complexity of the design, extent of structural works and level of fixtures, fittings and material finishes. It does not include professional/legal fees, statutory fees, environmental audits, other third-party fees, VAT or planning obligations (CIL, Section 106). Prices are updated at regular intervals but may not fully reflect inflation and the effects of international health or political crises. Always ask your architects to conduct due diligence on your timescale and budget considerations.

Typical Cost Breakdown

This chart illustrates the typical cost distribution for a self-build project, providing insight into how various expenses contribute to the overall budget.

Preliminary - 8%
Sub Structure - 9%
Super Structure - 21%
Roof Structure & Coverings - 11%
Windows & Doors - 6%
Plumbing & Heating (connections) - 9%
Electric Works - 7%
Joinery - 6%
Plastering - 6%
Finishing - 8%
Misc Work - 9%
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Looking for an experienced construction consultant

Look no further than Cullinan Construction Consultants. With years of experience and deep knowledge of the industry, we will always be able to offer you the best solutions for your project.

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