Key takeaways
- The new build process runs in order: survey and design, planning permission, groundworks and foundations, superstructure, roofing and services, then fit-out and sign-off.
- England recorded 142,040 new build completions in the rolling 12 months to December 2025 (MHCLG), so the system is busy and well-regulated.
- Building control inspects at set stages, and the final completion certificate is what lets you occupy and sell the home.
- Groundworks set the programme: get the foundations right and every later stage runs more smoothly.
- On multi-plot developer schemes, sequencing and a reliable groundworks contractor are what protect the build programme.
The new build process moves through six broad stages: survey and design, planning permission, groundworks and foundations, the superstructure, roofing and services, and finally fit-out and building control sign-off. Each stage has to pass before the next begins, which is why a clear order matters more than raw speed.
This guide walks a plot of land through to a finished, certified home the way a working contractor sees it. It is written for Northampton homeowners building a one-off house and for developers delivering several plots at once. England recorded 142,040 new build completions in the 12 months to December 2025, so you are stepping into a well-trodden, closely regulated system (MHCLG housing supply figures).
Where Does the New Build Process Actually Start?
It starts with a survey, not a spade. Before any design is drawn, a topographical survey records levels and boundaries, and a ground investigation checks soil, water table and any contamination. These findings decide the foundation type and feed straight into the design.
Once the surveys are back, an architect or designer produces drawings that suit the plot rather than fighting it. Orientation, access, drainage falls and neighbouring buildings all shape the layout. Getting these early decisions right is the cheapest way to save money, because changes on paper cost a fraction of changes on site.
A new dwelling is not permitted development, so you will submit a full planning application. The approval climate is reasonably open: in the final quarter of 2025, 87% of planning applications in England were granted, according to MHCLG. That figure is encouraging, but it rewards well-prepared applications with proper drawings and supporting reports. If your scheme is an extension rather than a full new build, the rules differ, and our guide to planning permission for extensions explains how.
Groundworks and Foundations: The Stage That Sets the Programme
Groundworks turn an approved design into something you can build on, and they set the pace for everything after. Poor foundations cannot be corrected later without serious cost, so this is where experience earns its keep. The ground investigation from stage one tells the team whether a strip, trench-fill, raft or piled foundation is right.
Typical groundworks on a single plot cover site clearance, setting out, excavation, drainage runs, and the foundations themselves, followed by the floor slab. Service routes for water, power and broadband are often laid at this point too, because digging once is cheaper than digging twice.
Ground conditions in and around Northampton vary, from stable clay to made ground on former brownfield plots, and each needs a different approach. Choosing the right partner here protects the whole programme, which is why our piece on what to expect from a groundworks contractor in Northampton is worth reading before work starts.
The Build Stages: Structure, Roof, Services and Fit-Out
With foundations cured, the home goes vertical. The superstructure is the shell: external and internal walls, floors between storeys, and the roof structure. Whether you build in masonry, timber frame or a modern method, this is the stage where the house finally looks like a house.
The build then runs in a sensible sequence:
- Superstructure: walls and floors up to roof level, with openings formed for windows and doors.
- Roofing: trusses or rafters, felt and battens, then tiles or slates to make the building watertight.
- First fix services: cables, pipes and ducting run inside walls and floors before plastering.
- Weathertight shell: windows and external doors fitted, so internal work can proceed in the dry.
- Second fix and fit-out: plastering, kitchens, bathrooms, sockets, heating, flooring and decoration.
Demand for this kind of work remains strong. NHBC, the UK's largest new home warranty provider, recorded 115,350 new homes registered across the UK in 2025, an 11% rise on the previous year. That growth is a useful signal that supply chains and trades are active, though it also means good contractors book up early.
How Do Building Regulations and Inspections Fit In?
Building control runs alongside the build from start to finish, separate from planning permission. Where planning decides whether you can build, building regulations decide whether what you build is safe, warm and sound. Inspections happen at set milestones rather than all at once.
A building control surveyor, from the council or an approved inspector, typically visits at stages such as excavation before concrete, the laid foundations, the damp proof course, drainage before backfilling, and key structural points. Missing a stage can mean opening up finished work, so the programme is built around these visits.
The milestone that matters most is the last one. After a final inspection, building control issues a completion certificate. Without it you cannot lawfully occupy the home, and you will struggle to sell or remortgage, so it belongs on the critical path from day one. Many new homes also carry a structural warranty, which runs its own inspection regime in parallel.
Energy efficiency rules have tightened in recent years, so expect checks on insulation, airtightness and heating systems as well as structure. Keeping the paperwork from every inspection in one place saves real hassle later, because buyers, lenders and surveyors will all ask to see it. Treat the certificate trail as part of the build, not an afterthought once the keys are cut.
Working With Developers on Multi-Plot Projects
Multi-plot schemes change the rhythm of the new build process, because several homes progress at once and sequencing becomes the main discipline. A developer's programme usually phases the site so that groundworks crews, bricklayers and roofers move plot to plot in a steady flow rather than standing idle.
On these projects the groundworks package carries extra weight. Site-wide drainage, roads, levels and shared services often have to be installed before any single house gets far, so delays here ripple across every plot. A contractor who can resource a phased programme, keep muck-away and deliveries moving, and hit inspection dates is worth more than the cheapest quote.
Clear contracts, agreed milestones and honest reporting keep developer relationships healthy. The same principles apply whether you are commissioning one home or twenty. Before you appoint anyone, check their track record on comparable plots, ask how they resource phased work, and confirm who owns the programme when trades overlap. A contractor who answers those questions plainly is usually the one who will still be answering your calls in month nine.
How AAS Group Delivers New Builds Across Northamptonshire
AAS Group Construction handles the new build process end to end for homeowners and developers across Northampton and the wider county. That single point of responsibility matters, because the handover points between survey, groundworks, structure and fit-out are exactly where programmes tend to slip.
In practice, the team coordinates early surveys and design input, carries out the groundworks and foundations, builds the superstructure, and manages trades through to final building control sign-off. On developer schemes, that same capability scales to phased, multi-plot sites with site-wide drainage and services. Because groundworks and construction sit under one roof, there is no gap where one contractor blames another.
If you are weighing up a plot, the most useful next step is a site visit and feasibility conversation before you commit to a design. Getting the survey and foundation strategy right at the start is what keeps the rest of the build on time and on budget, so bring your plot details and let the groundworks thinking lead the plan.
Frequently asked questions
How long does the new build process take?
For a single home, allow roughly 9 to 18 months from first survey to completion. Design and planning often take 3 to 6 months, and the physical build another 6 to 12 months depending on size, weather and ground conditions.
Do I need planning permission to build a new house?
Almost always, yes. A brand new dwelling is not covered by permitted development, so you submit a full planning application to the local authority. In Q4 2025, 87% of applications in England were granted (MHCLG).
What is the first stage of building a new home?
A site survey and ground investigation. These confirm boundaries, levels, drainage and soil conditions, which then shape the design and the type of foundation your groundworks contractor will install.
Who signs off a new build as complete?
Building control, either the local authority or an approved inspector. After the final inspection they issue a completion certificate, which you need before you occupy or sell the property.
