Cesspit Installation Services
UKDP installs new and replacement cesspits nationwide, assessing capacity, access, ground conditions and tank location before managing the complete installation.
What Happens Before a Cesspit is Installed?
Before excavation begins, UKDP assesses how the cesspit will fit and function on your property. We check the required capacity, proposed position, ground conditions, existing drainage and access for machinery. Safe future tanker access is also considered, as the tank will require regular emptying.
At the pre-works meeting, we explain the expected programme, site preparations and any access restrictions that may affect the work. We also plan how the working area will be secured and disruption managed. Larger, occupied or restricted sites may need additional arrangements before installation can begin.
What's Included in UKDP's Cesspit Installation?
The work depends on the property and whether the project involves a new or replacement cesspit. UKDP’s service can include:
Pre-works site survey
We assess the proposed tank location, ground conditions, existing drainage and site access before confirming how the installation will proceed.
System design and sizing
We establish the required capacity and select a suitable cesspit based on the property, its users and the applicable requirements.
Planning and compliance checks
We identify the planning permission, Building Regulations approval and local requirements that apply to the proposed installation.
Excavation and installation
We excavate the agreed position, install the new tank and connect it to the property’s drainage system.
Existing cesspit decommissioning
For replacement projects, the old cesspit is emptied and cleaned, collapsed, backfilled with compacted Type 1 and left safely in place.
Final inspection
Once work is complete, UKDP inspects the installation to confirm that the new cesspit is ready for use.
What Do UKDP Customers Say?
UKDP have, from my first contact with them, been very helpful, informative and re-assuring even when all hope seemed lost for a favourable outcome. Their in-depth knowledge and sheer determination made our claim possible where I feel sure most companies would have given up!
Thank you all so very much for all your work on my behalf. There is no way it was going to get done without your input. I would recommend you to anyone with similar problems. It's such a relief to have it done. Thanks again.
I would like to thank you regarding the claim you handled for me regarding my Septic Tank. You kept me fully informed of progress with my Insurance Company. The replacement tank was installed last month. I am so relieved that the work is now complete. I would be grateful if you could also pass on my thanks to Kevin. I think he attended three times and he was always very professional and reassuring.
How Does UKDP Install Your Cesspit?
UKDP plans and manages each stage according to the site and whether the project involves a new or replacement cesspit.
Site assessment
We assess the proposed location, ground conditions, existing drainage and access for excavation equipment.
System design and quote
We determine the required capacity, select a suitable tank and provide the proposed scope and cost.
Permissions and pre-works planning
We identify the applicable approvals and explain the programme, preparations and site arrangements before work begins.
Excavation and tank installation
We excavate the agreed location, position the cesspit and connect it to the property’s drainage.
Existing cesspit decommissioning
For replacement projects, we empty and clean the old cesspit before collapsing and backfilling it with compacted Type 1.
Final inspection and handover
We inspect the completed installation and confirm that the new cesspit is ready for use.
What Other Cesspit Services Does UKDP Provide?
After installation, UKDP can help assess the cesspit’s condition, arrange emptying and recommend the appropriate response to damage.
Emptying
We arrange scheduled emptying to prevent the cesspit from overflowing. The required frequency depends on the tank’s capacity and usage.
Learn moreInspection
We check for cracks, leaks, root ingress and alarm issues, and investigate why a cesspit may be filling unusually quickly.
Learn moreRepairs
We assess the type and severity of the damage before explaining whether a repair is practical or replacement should be considered.
Learn moreIs Planning Permission Needed for a New Cesspit?
The requirements depend on where the property is located. In England, a new cesspit requires planning permission and Building Regulations approval. It must have a minimum capacity of 18,000 litres for two users, plus 6,800 litres for each additional user.
UKDP assesses the proposed location, ground conditions and required tank capacity before confirming the installation plan.
We also identify the local requirements that apply to the site. Rules differ across the UK, so each project is considered according to its location rather than using a single nationwide standard.
Your Cesspit Installation Guarantee
Every new cesspit installation includes a three-year workmanship guarantee from UKDP. Once the work is complete, we check that you are satisfied and ask you to sign off the project. You will then receive a completion pack containing your guarantee.
For longer protection, we can also arrange an optional insurance-backed guarantee through our warranty insurance partner. This is separate from the included UKDP guarantee and is available for an additional fee. We will explain both options clearly, including what each guarantee covers, before you decide whether the extended protection is right for you.
What Do UKDP’s Recent Cesspit Installations Look Like?
Why Choose UKDP for Your Cesspit Installation?
UKDP combines cesspit installation experience, site-specific planning and clear advice for new and replacement systems across the UK.
Cesspit installation experience since 2009
We have managed new and replacement cesspit installations for private and commercial properties since 2009.
A clear quote before work begins
Your quote explains the proposed work and costs, including existing cesspit decommissioning where required.
CHAS Advanced accredited delivery
Our CHAS Advanced accreditation reflects the health and safety management followed across our installation work.
In-house insurance support
Where insured damage has led to replacement, our claims team can assess eligibility and support a valid claim.
Substantial business cover
UKDP carries £15 million in Public Liability, £15 million in Employers’ Liability and £2 million in Professional Indemnity insurance.
Nationwide, locally delivered
Our engineers and trusted local partners provide cesspit installation support across the UK, coordinated by the UKDP team.
What Changes When UKDP Replaces an Existing Cesspit?
A replacement is planned around the condition of the existing system, required capacity, site conditions and access.
What UKDP Assesses
- Cracks, leaks or structural damage
- The property’s users and required capacity
- The proposed position and ground conditions
- Access for excavation and future emptying
- The connection from the property
- The redundant cesspit
What the Replacement Involves
- A new sealed cesspit where replacement is recommended
- A tank sized for the property and applicable requirements
- Installation in an agreed location suited to the site
- A layout planned around machinery and tanker access
- Existing drainage connected to the new cesspit
- Emptying, cleaning, collapsing and backfilling with compacted Type 1
Can Cesspit Replacement be Covered by Buildings Insurance?
Buildings insurance may cover a replacement when cesspit damage results from an insured event and meets the policy terms. UKDP can investigate the system, document the findings and assess whether a claim may be valid.
If the insurer accepts the claim, it may authorise a like-for-like replacement or an alternative system where an upgrade is required for compliance and has been agreed.
Routine emptying, maintenance and gradual deterioration are not automatically covered.
Who Does UKDP Install Cesspits For?
UKDP plans new and replacement cesspit installations around the property, site conditions and the people responsible for approving or managing the work.
Homeowners
Design and installation of a new cesspit for your home where no other system suits the site.
Learn moreLandowners
We install cesspits for individual properties, rural estates and larger portfolios, considering capacity, access, ground conditions and future emptying requirements.
Learn moreInsurers
We provide evidence, installation scopes and cost proposals for claims involving damaged cesspits, including agreed like-for-like replacements or compliance-led alternatives.
Learn moreEstate Agents
When a survey identifies a damaged, undersized or unsuitable cesspit, we explain the installation options needed to help the transaction progress.
Learn moreWhat Else Should You Know About Private Drainage?
What Size Should My Septic Tank, Treatment Plant or Cesspit Be?
Understand how household size affects the capacity your new cesspit needs.
Read article
Septic Tanks vs Sewage Treatment Plants: What's the Difference?
Compare two other private drainage options before discussing which system suits your property.
Read articleCesspit Installation: Frequently Asked Questions
Ask our teamHow much does a cesspit installation cost?
The cost depends on the required tank capacity, ground conditions, site access and the amount of excavation and drainage work involved. Replacing an existing cesspit may also require the old tank to be emptied and decommissioned. UKDP provides a site-specific quotation after assessing the property.
How long does it take to install a cesspit?
Installation times vary according to the size of the system, access for machinery, ground conditions and any permissions required. Before work begins, UKDP holds a pre-works meeting to explain the expected programme, site preparations and how disruption will be managed.
Are a cesspit and a cesspool the same thing?
Yes. Cesspit and cesspool are commonly used to describe the same type of system: a sealed underground tank that stores sewage without treating or discharging it. The contents remain in the tank until they are removed by a registered waste carrier.
Does a cesspit need a soakaway?
No. A true cesspit has no outlet and does not discharge into the ground, so it does not require a soakaway or drainage field. If a system releases sewage or effluent into the ground or surface water, it is not classed as a cesspit.
Can rainwater drain into a cesspit?
Rainwater should be kept separate from a cesspit. Surface water entering the tank can make it fill much more quickly, increasing emptying costs and the risk of sewage backing up or overflowing. UKDP considers the existing drainage layout when planning the installation.
How often will a new cesspit need emptying?
There is no single emptying schedule for every property. Frequency depends on the tank’s capacity, the number of users and the amount of wastewater produced. The cesspit must be emptied by a registered waste carrier before it reaches a level at which it could overflow.
Does a cesspit need an environmental permit?
In England, a cesspit does not normally require an environmental permit unless the Environment Agency says otherwise. The General Binding Rules do not apply because a cesspit has no discharge. Planning permission and Building Regulations approval are still required for a new installation. Requirements elsewhere in the UK may differ.
Could a different off-mains drainage system be more suitable?
Possibly. Where a suitable and compliant discharge route exists, a septic tank or sewage treatment plant may be considered instead. The appropriate option depends on the property, ground conditions, available space and applicable regulations. UKDP assesses these factors before recommending a system.
Ready to Discuss Your Cesspit Installation?
Whether you need a new cesspit or a replacement for an existing tank, UKDP can assess the site and explain the next steps.