House Extensions & Renovations — Nationwide UK Delivery

The most common problem we hear from homeowners is that a previous builder disappeared mid-project — either literally (stopped showing up) or effectively (stopped communicating). The second most common is that the final cost was significantly higher than the original quote, with variations added throughout the build that were never properly explained or agreed in advance.

Warning signs that a residential project is heading in the wrong direction: a builder who can't give you a written programme, a quote that's suspiciously low compared to others, subcontractors who seem to be working on multiple sites at once, and a lack of formal contract documentation. These aren't minor red flags — they're predictors of the problems that cause most residential projects to go over time and over budget.

UK residential projects also come with specific regulatory complications. Party Wall Act compliance is required for extensions on shared boundaries — and getting it wrong can stop a project in its tracks. Planning permission requirements vary by local authority, and conservation area restrictions can significantly affect what's permissible. We know how to navigate all of this, and we handle it as part of the project rather than leaving it to the client.

Our extension work covers the full range of residential addition types. House extensions include single storey rear extensions, double storey side extensions, wraparound extensions, and basement conversions. Within that, we have dedicated services for loft conversion and extension — covering dormer, hip-to-gable, mansard and Velux conversions — and for kitchen extension, which typically involves creating an open-plan kitchen-diner with bi-fold doors, a roof lantern, and underfloor heating.

On the renovation side, our home renovations service covers whole-house refurbishments, kitchen and bathroom renovations, open-plan living conversions, and property refurbishments for landlords. We have specialist services for period property renovation — including listed buildings and conservation area properties — and for Victorian house renovation, which requires specific knowledge of lime mortar, original features, and the structural characteristics of Victorian construction.

All of our residential work is managed with the same programme discipline as our commercial projects. You can see examples of completed work on our projects page.

We don't limit our residential work to a single area. Vantix Group travels to projects across the UK, and we plan mobilisation as part of the project programme — not as an afterthought. Whether your home is in a London suburb, a market town in the Home Counties, or a city in the north of England, you get the same team and the same standard of delivery.

UK residential projects come with regional variation in planning requirements, conservation area designations, and local authority policies on permitted development. We know how to research these requirements before a project starts, and we factor them into the programme and cost plan from day one. We also handle Party Wall Act compliance for extensions on shared boundaries — including serving notices, coordinating with surveyors, and managing the process so it doesn't delay the build.

Every Vantix Group residential project is backed by a JCT contract, full public liability and professional indemnity insurance, and a formal programme agreed before work starts. You get a single point of contact throughout — the same person who takes your brief is accountable for the handover.

We price transparently. Our quotes are detailed and fixed where the scope is fixed. We don't use low initial quotes to win work and then recover margin through variations. If something changes on site, you hear about it immediately — with a clear explanation and a fair cost. We're also members of, or working towards membership of, recognised trade bodies including the Federation of Master Builders, which means our work is independently verifiable.

Find out more about how we work on our about page, or get in touch to discuss your project.