Trusted builders in Potters Bar since 2014. TCM Building & Maintenance delivers house extensions, loft conversions, and full refurbishments across Potters Bar, Brookmans Park, and the surrounding Hertsmere area.
Potters Bar is a commuter town at the southern tip of Hertfordshire, sitting directly on the boundary with the London Borough of Enfield. Its position on the East Coast Main Line — with trains to London King's Cross in under 20 minutes — makes it one of the most accessible Hertfordshire towns for London commuters. The town's housing stock is predominantly post-war, with a large proportion of 1950s, 1960s, and 1970s detached and semi-detached properties, alongside more recent developments and a smaller number of Victorian and Edwardian properties in the older parts of the town.
TCM Building & Maintenance is based in Borehamwood, approximately five miles from Potters Bar town centre. We have been working in Potters Bar and the surrounding area — including Brookmans Park, Northaw, Cuffley, and the Enfield border — since 2014. Our projects in the area range from single-storey rear extensions on post-war semis to full refurbishments of larger detached properties and commercial fit-outs in the town centre.
Planning applications in Potters Bar are handled by Hertsmere Borough Council. The council's planning team is generally supportive of well-designed residential extensions, and many projects in Potters Bar can proceed under permitted development rights. The Green Belt covers a significant proportion of the land around Potters Bar, including the Northaw and Cuffley areas, and affects a number of properties on the town's outskirts. TCM advises on the planning position for every project during the free site survey.
Single and double-storey rear, side, and wrap-around extensions.
Dormer, hip-to-gable, Velux, and mansard loft conversions.
Full property refurbishments, kitchen and bathroom renovations.
Integral, attached, and detached garage conversions.
Cellar conversions, basement excavations, and underpinning.
New builds, structural repairs, concreting, and demolition.
Planned and reactive maintenance for homes and businesses.
Emergency call-out for structural damage, leaks, and fire/flood.
Hertsmere Borough Council (hertsmere.gov.uk) is the local planning authority for Potters Bar. The council's Local Plan supports well-designed residential extensions. Permitted development rights apply to most residential properties in Potters Bar, allowing single-storey rear extensions up to 4 metres (or 6 metres under the neighbour consultation scheme) and loft conversions adding up to 40 cubic metres on semi-detached properties. Properties in the Green Belt or within conservation areas require a more detailed planning assessment. The Northaw and Cuffley area to the north of Potters Bar is substantially within the Green Belt. TCM will confirm the planning position during the free site survey.
Potters Bar's housing stock is predominantly post-war. The 1950s, 1960s, and 1970s detached and semi-detached properties that characterise much of the town are well-suited to rear extensions and loft conversions. Many of these properties have flat or low-pitched roofs that may require a dormer extension to create adequate loft headroom — TCM will assess the roof structure during the free site survey. Larger detached properties in Brookmans Park and the roads around Potters Bar Golf Club offer scope for significant extensions and garden studios. The town also has a number of more recent developments with modern detached houses.
The Green Belt covers a significant proportion of the land around Potters Bar, particularly to the north in the Northaw and Cuffley areas. Extensions to Green Belt properties must not result in disproportionate additions to the original dwelling, and the cumulative effect of previous extensions is taken into account. Post-war properties in Potters Bar often have flat or low-pitched roofs that limit the scope for standard loft conversions — a dormer extension may be required to create adequate headroom. TCM will assess the roof structure and the planning position during the free site survey.
We offer a free, no-obligation site survey for all projects in Potters Bar and the surrounding areas.
Book a Free SurveyTCM has been delivering building and maintenance projects in Potters Bar and surrounding areas for over 15 years. We know the local planning authorities, the local building stock, and the local market.
All our tradespeople are independently verified on Checkatrade. Our 5-star rating is based on genuine, verified reviews from clients in your area.
We provide fully itemised, fixed-price quotations. There are no hidden extras, no surprise invoices, and no ambiguity about what is included.
We cover all building trades — from structural work and groundworks to plastering, electrics, plumbing, and decoration. One team, one contract.
We handle all Building Regulations applications and inspections on your behalf, and provide you with the completion certificate at handover.
We provide a 24-hour emergency call-out service across Potters Bar for structural damage, water ingress, fire damage, and other urgent situations.
"TCM built a single-storey rear extension on our 1960s detached in Potters Bar — a large family room with a vaulted ceiling and roof lantern. The team managed the Hertsmere planning process and the structural calculations. The project was completed on time and on budget. The quality of the finish is outstanding and the room has transformed how we use the house."
"We had a dormer loft conversion completed by TCM on our 1970s semi in Potters Bar. The low-pitched roof meant a standard conversion wasn't possible, but TCM designed a dormer that works perfectly with the existing roofline. The new bedroom and en-suite are beautifully finished. The team was professional and communicative throughout."
"TCM refurbished our kitchen and three bathrooms in our detached property in Brookmans Park. The team was respectful of our home, the work was completed to a very high standard, and the price was exactly as quoted. The project manager kept us fully informed throughout. We are very happy with the result."
Contact our team today for a free, no-obligation site survey and quotation. We cover all areas of Potters Bar and Hertfordshire.