CMB Builders are Hertfordshire builders who specialize in the quality construction of extensions, conversions (including loft conversions, barn conversions and garage conversions) and new houses. Our best advertisment is our work and because of it we have never needed to advertise. All our work is obtained through recommendations from previous clients and Architects.

We have a team of dedicated tradesmen who take great pride in their work and because we run a maximum of two contracts at once all our work is well organised and finished on time.

Please browse through our gallery to see a few of our completed projects.

If you have a building project you would like to discuss, please contact us.