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Construction

Are you looking for a insurance approved building contractor? At Nationserv we offer the highest standards in repair and renovation works.

Home/Construction

Design and build contractor across Hertfordshire and the UK.

Nationserv is a UK specialist insurance repair contractor delivering end to end building solutions, including design and build construction. The same teams, the same accreditations, the same project discipline, applied to private extensions, refurbishments, listed homes, commercial fit out and beyond.

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LABC Award winning home extension on Woodfield Road, Hertfordshire, by Nationserv
100+
Skilled tradespeople, with NICEIC and Gas Safe held in house

Independently audited. Insurer trusted. Award winning.

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ConstructionLine Gold accredited CHAS accredited contractor SafeContractor approved BM TRADA Q Mark certified Helifix Approved Installer Cyber Essentials certified
The two markets we build for

Two audiences, one standard.

Whether you are a homeowner planning the project of a lifetime or a business reshaping a commercial space, Nationserv brings the same in house teams, the same surveyor led project management, and the same handover discipline.

Residential

For homeowners and developers.

Extensions, full house renovations, listed property restoration, loft conversions, kitchens, bathrooms and bespoke landscape projects. Single point of contact from concept to handover. Ten years in business and 25 years of combined trade and leadership experience behind every project.

  • Single trade home extensions through to multi storey rear and side returns
  • Listed property restoration with a sympathetic, heritage led finish
  • Full house refurbishments coordinating every trade in house
  • Kitchens, bathrooms, swimming pools and exterior landscaping
Commercial

For business owners and asset managers.

Operational fit outs, hospitality builds, retail refurbishments and complex commercial reinstatement. Teams used to working within live trading environments, alongside building managers, FM teams and tenants, with phasing and out of hours working built into the programme.

  • Bar, restaurant and hospitality fit outs delivered to a fixed opening date
  • Retail and office refurbishments managed around live trading
  • Heritage commercial buildings restored with conservation grade finishes
  • Multi site programmes coordinated under one project lead
Capabilities

The full building scope, in one team.

End to end building solutions from groundworks to final snagging. Every core trade you need sits in house, every approval you need is held within the business. One team, accountable from start to finish.

01

Home extensions

Single storey, two storey, rear and side return extensions. From planning support through to handover.

02

Refurbishments

Full house refurbishments, kitchen and bathroom programmes, structural openings, replastering and finishing.

03

Listed property

Sympathetic restoration of listed and heritage homes. Lime renders, traditional joinery, conservation grade detailing.

04

Loft conversions

Dormer, hip to gable and mansard conversions. Structural confidence backed by Helifix specialism.

05

Commercial fit out

Hospitality, retail and office fit outs, including phased delivery and out of hours working in live venues.

06

Roofing

Lead, slate, tile and flat roof builds and repairs. Specifications written for longevity.

07

Cladding and render

External wall systems, modern render finishes and lime render restoration on heritage stock.

08

Pools, decking and grounds

Bespoke swimming pools, raised decking, driveways and full landscape programmes coordinated end to end.

Selected projects

Recent work across residential and commercial.

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Full residential renovation and extension at Greenfield Road delivered by Nationserv
Residential, Hertfordshire

Greenfield Road full renovation and extension.

New render, kitchen diner, bathrooms, hot tub area and roof works. A multi trade programme delivered in one continuous build.

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Listed property renovation by Nationserv with full external render and heritage finishes
Heritage, residential

Listed property full renovation.

Full external render, new windows and doors, heritage led internal restoration. Sympathetic finishes throughout, delivered end to end.

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The Blossom Room Milton Keynes luxury bar fit out by Nationserv
Commercial fit out, Milton Keynes

The Blossom Room, a £500k luxury bar.

Bespoke bar joinery, lighting, plumbing, bathrooms and full interior. Delivered on time and on budget for a fixed opening date.

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Recognition

LABC Building Excellence Awards 2025 Regional Winner and National Finalist Best Residential Extension.

Our Woodfield Road Hertfordshire extension was named Regional Winner at the LABC Building Excellence Awards 2025 and went on to reach the national finals in the Best Residential Extension category. A peer reviewed measure of design, build quality and finish, judged by local authority building control teams across the UK.

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The Nationserv team holding the LABC Building Excellence Awards 2025 trophy
How we work

From first call to final handover.

A clear, four stage path from initial enquiry to project completion. The same surveyor led discipline that runs every insurance repair reinstatement, brought to private and commercial construction.

Stage one

Brief and site visit

A senior surveyor attends, captures the brief, takes detailed measurements and photography, and confirms scope and constraints.

Stage two

Specification and quote

A fixed, line by line specification with materials, trades and timings. Transparent pricing. No hidden contingencies.

Stage three

Build and project management

Nationserv teams across every core trade, coordinated by a single project lead. Weekly progress updates and a clear site protocol.

Stage four

Snagging and handover

A formal walk through, snagging completion and a documented handover pack. Aftercare available beyond completion.

Ready to brief your next project?

From a single storey extension to a full commercial fit out, Nationserv brings ten years in business and 25 years of combined trade and leadership experience to every brief. Speak to the team and start your project the right way.

Request a construction quote
0800 652 3331 Speak to the construction team
[email protected] Send a brief or drawings
Browse case studies Recent residential and commercial projects