Builders & Maintenance
Hatfield
Trusted builders in Hatfield since 2014. TCM Building & Maintenance delivers house extensions, loft conversions, and full refurbishments across Hatfield, Welwyn Garden City, and the surrounding Welwyn Hatfield area.
TCM Building in Hatfield:
Local Knowledge, Expert Results
Hatfield is a new town in Hertfordshire, developed substantially in the post-war period around the historic core of Old Hatfield. The town is home to the University of Hertfordshire and the Galleria retail complex, and its position on the A1(M) and the East Coast Main Line makes it a well-connected base for commuters. The housing stock reflects the town's post-war development — large areas of 1950s, 1960s, and 1970s terraced, semi-detached, and detached housing in the Hatfield New Town area, alongside the older Victorian and Edwardian properties in Old Hatfield and the more recent private developments in Birchwood and Welham Green.
TCM Building & Maintenance is based in Borehamwood, approximately ten miles from Hatfield town centre. We have been working in Hatfield and the surrounding Welwyn Hatfield area since 2014, completing projects ranging from single-storey rear extensions on post-war semis to full refurbishments of larger detached properties and commercial fit-outs in the town's business parks.
Planning applications in Hatfield are handled by Welwyn Hatfield Borough Council. The council's planning team is active in enforcing design standards, particularly in Old Hatfield Conservation Area and in the Green Belt land that borders the district. The council's Local Plan supports well-designed residential extensions, and many projects in Hatfield can proceed under permitted development rights. TCM advises on the planning position for every project during the free site survey.
Building & Maintenance Services
Across Hatfield
House Extensions
Single and double-storey rear, side, and wrap-around extensions.
Loft Conversions
Dormer, hip-to-gable, Velux, and mansard loft conversions.
Refurbishments
Full property refurbishments, kitchen and bathroom renovations.
Garage Conversions
Integral, attached, and detached garage conversions.
Basement Conversions
Cellar conversions, basement excavations, and underpinning.
General Building
New builds, structural repairs, concreting, and demolition.
Property Maintenance
Planned and reactive maintenance for homes and businesses.
24/7 Emergency
Emergency call-out for structural damage, leaks, and fire/flood.
Why Local Knowledge
Matters for Building Work
Welwyn Hatfield Borough Council (welhat.gov.uk) is the local planning authority for Hatfield. The council's Local Plan supports well-designed residential extensions. Permitted development rights apply to most residential properties in Hatfield, 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. The Old Hatfield Conservation Area covers the historic town centre and parts of the older residential streets, where permitted development rights are restricted. The Green Belt covers a significant area around Hatfield, including the Essendon and Little Berkhamsted areas. TCM will confirm the planning position during the free site survey.
Hatfield's housing stock is predominantly post-war. The 1950s, 1960s, and 1970s terraced and semi-detached properties in the Hatfield New Town area 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. Larger detached properties in Birchwood, Welham Green, and the roads around Hatfield Park offer scope for significant extensions and garden studios. The Victorian and Edwardian properties in Old Hatfield are well-suited to full refurbishments and carefully designed extensions that respect the conservation area character.
The Old Hatfield Conservation Area covers the historic town centre and parts of the older residential streets, where permitted development rights are restricted and planning permission is required for external alterations. Welwyn Hatfield Borough Council's design guidance requires extensions and alterations in the conservation area to use materials and detailing sympathetic to the existing property. Post-war properties in Hatfield New Town 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. The Green Belt covers a significant area around Hatfield, and properties in the Essendon and Little Berkhamsted areas may be subject to Green Belt planning constraints.
Areas We Cover in Hatfield
Free Site Survey in Hatfield
We offer a free, no-obligation site survey for all projects in Hatfield and the surrounding areas.
Book a Free SurveyThe Hatfield Builder
You Can Trust
15+ Years in the Area
TCM has been delivering building and maintenance projects in Hatfield and surrounding areas for over 15 years. We know the local planning authorities, the local building stock, and the local market.
Checkatrade Verified
All our tradespeople are independently verified on Checkatrade. Our 5-star rating is based on genuine, verified reviews from clients in your area.
Fixed-Price Quotations
We provide fully itemised, fixed-price quotations. There are no hidden extras, no surprise invoices, and no ambiguity about what is included.
All Trades Under One Roof
We cover all building trades — from structural work and groundworks to plastering, electrics, plumbing, and decoration. One team, one contract.
Building Regs Managed
We handle all Building Regulations applications and inspections on your behalf, and provide you with the completion certificate at handover.
24/7 Emergency Cover
We provide a 24-hour emergency call-out service across Hatfield for structural damage, water ingress, fire damage, and other urgent situations.
What Our Hatfield Clients Say
"TCM built a single-storey rear extension on our 1960s semi in Hatfield New Town — a large open-plan kitchen and family room with bifold doors onto the garden. The team managed the Welwyn Hatfield planning process and the structural calculations. The project was completed on time and on budget. The quality of the finish is excellent."
"We had a dormer loft conversion completed by TCM on our 1970s terrace in Hatfield. The low-pitched roof meant a standard conversion was not 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 Victorian property in Old Hatfield — new kitchen, two bathrooms, and full internal redecoration. The team was respectful of the property's character, the work was completed to a very high standard, and the price was exactly as quoted. The project manager was excellent throughout. We are very happy with the result."
Hatfield Building FAQs
Ready to Start Your
Hatfield Project?
Contact our team today for a free, no-obligation site survey and quotation. We cover all areas of Hatfield and Hertfordshire.