When you need new drain installation for a new build or extension, the drainage has to do more than carry water away. It needs to fit the build, separate foul-water and surface-water drainage properly, and stand up to Building Control checks. Hampshire Drainage provides new drain installation across Hampshire for domestic and commercial projects, with related services such as drain testing, CCTV surveys and soakaway work.
That matters because Approved Document H shapes new drainage work in England, along with surface-water drainage rules and any issue around a public sewer or build-over agreement. Hampshire Drainage helps you deal with the practical side early, so you can reduce inspection problems, avoid needless rework and keep your project moving towards completion.
New drain installation in Hampshire for new builds and extensions
New drainage work is easier to manage when the same contractor can handle installation and the supporting drainage tasks around it. Hampshire Drainage installs drainage for new homes, extensions and site alterations across Hampshire, serving homeowners, builders and commercial clients who need a local team that understands live building projects.
“Hampshire Drainage covers the whole of Hampshire and offers 24/7/365 drainage support.”
Because Hampshire Drainage also provides drain testing, CCTV drain surveys, soakaways, drain repair, drain lining and jetting, we can do more than lay new pipes. If your extension needs to tie into existing drainage, or if workers discover that they damaged an older line during the job, you have a clearer route to deal with the issue without bringing in separate drainage contractors.
“Hampshire Drainage brings 20+ years’ drainage experience to installation, testing and wider drainage work.”
That joined-up service is useful when build programmes are tight. You want drainage that is installed with inspection, connection points and future access in mind, not work that creates fresh digging once patios, floors or finishes are already underway.
Foul-water and surface-water drainage installed with Part H in mind
In England, Approved Document H is the Building Regulations guidance for drainage and waste disposal, and it distinguishes foul-water drainage from surface-water drainage. Hampshire Drainage plans to install a new drain around that separation, so they deal with wastewater from WCs, sinks, and appliances differently from rainwater coming from roofs and paved areas.
For many projects, designers may direct surface water into the ground where the design and site conditions make that suitable. Hampshire Drainage can include soakaway work as part of a new drainage package, which helps when your build needs a practical surface-water solution rather than a one-size-fits-all connection.
The national SuDS standards also make clear that infiltration drainage must not create an unacceptable risk of groundwater pollution, surface-water pollution, groundwater flooding or ingress to combined or foul sewers. For you, that means the drainage layout needs to be sensible on paper and workable on site.
Typical new-build and extension drainage work from Hampshire Drainage can include:
- New foul-water drainage runs for the building
- Surface-water drainage and soakaway work where appropriate
- Drain testing and CCTV surveys when verification is needed
- Repair, lining or jetting if existing drainage causes problems at tie-in points
Sewer connections and build-over checks for Hampshire extension projects
If your new drainage has to connect to a public sewer, or if you are building your extension over or near a sewer, you may need to obtain approvals as part of the job along with excavation and installation. Hampshire Drainage helps you identify these issues early, so you can raise them with the relevant water company, designer, or Building Control before you close up the ground.
“Based in Clanfield, Hampshire Drainage says it responds the same day for projects across Hampshire.”
This matters because build-over consent is not minor admin. The water industry guidance states that authorities may refuse a Building Regulations completion certificate without a build-over agreement, and that can create problems later when someone sells the property.
On extension work, this often appears when a rear extension crosses an existing sewer line. On new builds, it can affect where and how the new drainage connects, especially when a public sewer is nearby and the connection details need to be right first time.
Hampshire Drainage keeps new-build drainage practical from first dig to testing
Hampshire Drainage approaches new drain installation as part of the wider build, not as an isolated trenching job. We look at the plans, the proposed connection point and the existing site drainage, then install the required runs and related drainage elements for the stage your project is at.
A typical project moves through these stages:
- The team will review the site and plan to confirm foul-water and surface-water routes, likely connection points, and whether they need to conduct soakaway work, testing, or further investigation.
- Installation of the new drainage runs for the extension or new build, including tie-ins to the intended outlet or existing system where required.
- Testing and checks, with drain testing and CCTV survey capability available if a connection, fall or existing line needs verifying.
- Ongoing support if site conditions change or an unexpected drainage problem appears, backed by Hampshire Drainage’s wider repair, jetting and emergency drainage services.
For you, that means fewer handovers between trades and a clearer path from groundwork to sign-off. Hampshire Drainage also states that it offers same-day response and 24/7/365 availability, which is useful when site timelines shift or an urgent drainage issue threatens to hold up the next stage.
When Hampshire Drainage is the right fit for your new drain installation
When you want one local drainage firm to install the system and support the rest of the drainage work around it, choose Hampshire Drainage. That includes homeowners planning an extension, builders delivering new dwellings and commercial clients who need Hampshire-wide drainage coverage.
We are especially useful when the project is not just a straightforward new run. If you also need soakaway work, drain testing, CCTV evidence, repair to existing drains or rapid help when unexpected problems appear, Hampshire Drainage gives you a more complete drainage service around the installation itself.
New drainage is not a job you want to revisit after the build is finished. Hampshire Drainage combines new installation with practical support on compliance-sensitive issues such as foul-water and surface-water separation, sewer connection points and build-over concerns, helping you reduce risk before it becomes expensive.
Because every plot, extension footprint, and connection point is different, you should scope new drain installation against your plans and actual site conditions. That gives you a clearer basis for cost, timing and required drainage work than a generic estimate ever could.
If you are planning a new build or extension in Hampshire, speak to Hampshire Drainage early in the design or groundwork stage. We can review the drainage side of the project, highlight where testing, soakaways or sewer-related approvals may matter, and help you move towards installation with fewer surprises.