Quality & Trusted Building Contractor

Providing building services for residential and commercial contracts for over 20 years. We cover Herts, Beds, Bucks & London.

Accredited Building Contractor

Professional builders in Stevenage. We offer all home building services and commercial building services from home extensions to renovations and new home building services. Contact us for a free estimate today. We offer full guarantee on our work.


All of our projects go through a professional consultation, detailed and communicated with transparency.


We then look to start the design and planning process. Avoiding disruptions during building or work.


Once we are both satisfied we will being our work in building or renovation. Our focus is quality and perfection.

Get a free quotation

Feel free to call us or submit a request if your thinking about hiring a building contractor using our form below. Visit us in Stevenage our office which is open to all of our clients for planning, design discussions or a general quote. We offer a variety of building services. 

We can carry out your home extension project to a very high standard. From the ground up through to structural beam installation and external refurbishment. 

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There’s nothing more exciting then stepping into your new home, brand new, built just for you. We offer a full design and build service to literally build a home you can step into and live in once completed. From building, plumbing, electrics and gardening we provide a full a-z service. 

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Loft conversions are a great way to increase space and practicality in your home, whether it be for an extra bedroom or office space a converting your loft into a usable room is a great decision.

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Refresh your new or existing home by using a professional home renovation company. We car strip wall, rebuild or create sections. Decorated beautifully to suit your needs. 

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We are renowned and have been featured in the press for our design and build skills. We can build and decorate commercial properties. Making your business a safe and quality environment. 

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Thinking about space? Converting unused space in your home can have a great impact on your daily life. We are specialists in garage conversions. We can turn your garage into another room, with lots of ideas call us today. 

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Highly experience kitchen fitters allowing you to save costs. We can provide you with full supply, install and fitting on a new beautiful kitchen. 

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We offer bathroom fitting services. If your bathroom is in need of refreshment or repair contact us today. We can supply and fit a beautiful and practical bathroom in your home. 

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At Nationserv we are always on hand to provide our community with local building services. If you ever need any assistance just call us. 

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Starting a new business? Let Nationserv be your building partner. We can offer high quality and professional shop fit outs from groundworks, to wiring electrical we have you covered. 

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Hire a professional driveway builder to provide you with a long lasting a professional look. The front of your home is the first thing people see. Let’s make your driveway look amazing.

We are specialists in creating stunning patio

The benefits of using our services

Why Choose Us?

Nationserv is a local builder based in Stevenage. We offer a fixed price quotation promise, ensuring transparency and confidence when using us. From small building repairs to full house builds we offer free no obligation quotes. Specialising in home extensions and renovations we focus on high quality long lasting building work.

Quality is our core

All of our building services are of the highest standard. We only use high quality materials and finish to perfection.

Always On Time

We will always work to meet deadlines and budget. Our team of professional builders work with confidence and planning.

Accredited & Insurance Approved

We have worked to become accredited and approved. Maintaining high quality building standards for our customers.

"The First Thing We Build Is Trust"

We have in house designers, electricians, plumbers to complete your building project on time.

Builders In Stevenage

Nationserv are a rapidly expanding building service provider to Insurance/commercial and private sector clients.

We have 3 strategically placed offices enabling us to cover extensive areas of the country for our clients. Our Portsmouth office enable coverage of large areas of the south.

The head office in Hertfordshire enables coverage of London and the home counties. Our Milton Keynes office allows us access in to the midlands.

Our highly skilled trades ranging from, groundworkers/bricklayers to the roof above and everything in between. Enable us to provide cost effective and quality service to all customers from a small bathroom project to a complete new build office block. With the 12 month minimum guarantee.

Need to know how much your home extension might cost?

Hire a local builder!

We are based in Stevenage and cover most of the South East. If you need a free no obligation quotation just give us a call. 

Having completed many building contracts in the areas mentioned. We have a reputation for maintaining high quality in the work we do. 

From initial help with gaining planning permission to drawings and plans we have partnered with some of the most reputable local building specialists to provide our clients with an excellent peace of mind service. 

Our head office is based in Stevenage, however we also cover:

  • Hitchin
  • Letchworth
  • Hertford
  • Royston
  • Welwyn Garden City
  • Bishop’s Stortford
  • Harpenden 
  • St Albans
  • Watford
  • Borehamwood
  • Hatfield 
  • Hemel Hempstead
Hire A Local Builder


We have in house designers, electricians, plumbers to complete your building project on time.

Our Work Ethic

We offer full detailed quotations for transparency and all of our work is fully guaranteed.


Professional Builders For Hire!

Based in Stevenage Hertfordshire, we specialise in home extension building services. We offer a full list of services from renovation to new house building services.

Our highly skilled trades ranging from, groundworkers/bricklayers to the roof above and everything in between enables us to provide cost effective and quality service to all customers.

From a small bathroom project to a complete new build office block. We work to the highest standard at all times and offer a full 12 month guarantee for complete peace of mind.

Divisions of our business are: Insurance, Commercial & Domestic. We pride ourselves on being the ideal partner for your business, through partnering or framework agreements contact us now to add yourself to our growing list of satisfied clients.

Insurance Approved Builders

If your home requires repairs which are covered by your  home insurance get in touch. Our home insurance partners are industry leading. We offer high quality and strict deadline to ensure you can get back to living life as normal as quickly as possible. 


A trusted building contractor, just ask!

Highly Rated!
Google Reviews
These guys are amazing! They came in to carry out work after i had a water escape which was a stressful experience in it self. My first time dealing with insurance and repairs of this nature.
Jas Kaur
Darren came and done the survey and explained what was needed to be done. His team delivered with a very high standard of work.
Breda Ryan
Nationserv provided and excellent service, providing a transparent and very high quality finish.
David West
Rhys & Darren were extremely professional and honest from start to finish would recommend if you want high quality work.
Sarah Bennett

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