Building Company

    N-Vico Ltd is a leading building company based in London. We take pride in providing practical and cost effective solutions to manage the entire construction element of your project.

    Learn More
  • Fee Quotation

    House Extensions Expert

    Are you planning on expanding your house? We provide modern and cost-effective builds once you have the designs in hand.

    Book An Appointment Learn More
  • Specialists in loft conversions

    Loft Conversion Experts

    Our loft conversion experts use their specialised knowledge to transform your attic space into an intricately designed functional space. For further information, call us now.

    Get Started

    Looking to add a completely new floor to your home? N-Vico provides state-of-the-art basement conversion services that will transform your house.

    Learn More
  • Loft Conversion

    Boost the value of your property by converting an additional space into a useful part of your home. Avail our loft conversion services today and get the best prices in town.

    Learn More

Building Company

N-Vico Excellence in Building Services

We are committed to providing premium building services using intricate designs and superior building material to give your house an exceptional look at an affordable price.
House Extensions

House Extensions

Redesign the extra space of your house and transform it into beautifully created extensions. Our company offers a range of building services approved by the building authority.



Living in a high-cost area and need more space? Do not settle for less; convert your basement into a luxurious living room through our low priced building services.

Loft Conversions

Loft Conversions

Experience a whole new functional room by converting your loft space into a sophisticatedly crafted room. Call us today to learn more about our construction building services.

House Refurbishment

House Refurbishment

Unveil the epitome of luxury with N-Vico's bespoke house refurbishment services in North London, Watford, and Hertfordshire. Experience unparalleled craftsmanship and precise attention to detail for over 15 years. Bring your dream home to life. Discover excellence in home renovation today.

Customers Testimonials

Building Company in Hertfordshire

Mr James Reed from Chesham

From / Chesham

Very happy to recommend N-Vico. They completed rear house extension for me extremely quickly and to a high standard. I will definitely be using their services again and feel sure anyone using this company would be as satisfied as I was.

Mrs Moira Miller

From / Hemel Hempstead

N-Vico is a professional company, they communicates with the client all the time and give updates, they turn up on time, are an excellent value, N-Vico does a great job, and well worth getting a quote. N-Vico team did a great plastering job to the whole house, under floor heating and floor tiling. Many, many thanks

Julie Thomas

From / Watford

The team was keen to work, arrived when they said they would and worked hard. They completed a perfect paving job on very uneven ground. Their landscaping skills are amazing.


From / Watford

Marius is incredibly pleasant to deal with and very helpful. He is extremely professional and quotes and discussions before, during and after the project reflect this. He employs/contracts with a wide range of tradesmen and can cater for the full undertaking of an extension, remodelling and refurb project. The quality of the work and finish is excellent. Marius meets with the customer at regular intervals during the project to explain what is happening and how things are being done. I would certainly work with Marius and n-Vico again on future projects.

Mr and Mrs Jones

From / St Albans

N-Vico supplied and fitted a complete kitchen for us including cupboards, tiles, flooring, decorating and ceiling renewal. They provided all the materials I am very happy with the work that he did. Their work was really professional and we were happy with the quote that they gave us. They were quite quick with the job - no delays. I am really happy and will recommend them. The kitchen looks lovely and he gave us some suggestions on colours etc. - that was brilliant and it helped us a lot - we were happy with their suggestions.


From / Hertfordshire

Building projects can be quite a stressful, but now that the project is complete, we are grateful we went with Marius and his N-Vico team, he's helped navigate the whole project smoothly and we've ended up with an excellent result. From the start, Marius offered us sound advice and was one of the few builders to provide us with a detailed, itemised quote. Marius team consists of excellent builders, who work fast, neatly and are very polite. Marius also uses specialists that he has vetted over the years and we had a great experience with all of them, covering all manner of areas: flooring, plumbing, electrician and painting. The communication with Marius was excellent, I'm probably typical of a first time building client and had endless questions for Marius, who showed a lot of patience in explaining things well. In terms of budget, Marius was more or less in line with his original budget, most of the deviations were initiated by my own changes, so I have no complaints on that front. We've already referred N-Vico onto other friends, who I'm sure will have an equally good experience with Marius and his team.


From / Watford

Highly skilled team and very happy with the result. Scope changed and unforeseen challenges occurred in the build but Marius and team worked through them well. Very respectful of the fact we were living in the house whilst the work was being done. Site was kept clean and tidy. I would recommend them and use again myself.

Building Company

With a Collaborative Working Approach

At N-Vico Ltd, we work in collaboration with our customers to create uniquely designed and sophisticated homes by offering cost effective building solutions. We will coordinate with architects, consultants and more that you have already started working with.

  • The completely integrated nature of our services is one of our key features.
  • Our company is valued for its high-quality workmanship, professional services and commitment to work.
  • At N-Vico, we cater to bespoke building needs and ensure quality and precision throughout all of our jobs.
  • We audit each of our services before invoicing to ensure transparency by declaring a candid policy.
  • From the start of construction to delivering the finished product, we handle the projects with maximum efficiency, without the involvement of additional building contractors. We will, however, work with architects and consultants that have been involved with the design of the project.

Learn More