Home - Mostrim Groundworks Limited

Groundworks you can rely on

Our services

Foundations and substructures

Our experienced groundworks team help you hit the ground running. We provide a full range of services from foundations up to oversite.

Frames and podium slabs

We will support you in meeting your timescales with high-quality groundworks on concrete frames and podium slabs.

Drainage: Private and adoptable

From private drainage to mains sewers, our street-works qualified team delivers a quality job in and outside the site boundary.

Roads and infrastructure

Our supervisors and groundworkers are highly trained and experienced. So, your project is finished safely and to the highest standards.

External works

As a CHAS and SMAS registered firm, we never cut corners. Instead, our skilled, experienced team will finish everything perfectly (and to your deadline).

Customer care

Our aim is always to ‘do it once and do it right’. We also have a designated customer care team to carry out remedials and customer extras.

Why choose Mostrim Groundworks?

At Mostrim Groundworks, we deliver dependable groundworks and civil engineering solutions for housebuilders—on time, on budget, and built to last.

Founded in 2011 by Steve and Lorraine Clarke, Mostrim has grown into an established and agile SME with a strong reputation for quality and integrity. With over 30 years of industry experience, Steve has shaped our culture through hands-on leadership, coaching, and a deep commitment to getting the job done right, first time, every time.

We’re trusted by residential developers for our skilled people, robust health and safety standards, and proven ability to deliver, even under the most demanding programmes. It’s why so much of our work comes from recommendation—and why we continue to grow.

Competitive pricing

Tendered or negotiated, you’re assured of a great deal.

We have the resources

We have a great pool of labour to suit every project.

Approved suppliers

You’re in good hands with approved subcontractors and suppliers.

We deliver on time

You can rely on us to deliver on or ahead of schedule.

Featured projects

Wantage

82 houses

In the village of Wantage this site comprised of 82 units and involved traditional foundations and infrastructure.

Cranleigh

120 units

Transforming an old industrial estate. We came in post demolition, carried out soil remediation across all plots and laid the permeable access roads and site infrastructure.

Lower Rainham Road

85 units

Situated on the outskirts of Rainham. Using traditional foundations and infrastructure.

Wokingham

Two blocks of apartments

Two apartment blocks on sloping grounds with retaining walls and exposed facework. All services placed at the early stage to enable a quick finish at the end of construction. Adjacent to railway line with strict risk assessments and method statements. Finished up to DPC ahead of time.

Maidenhead

Flats and basement carpark

This development included a deep basement excavation between contiguous piles, the unique RC basement also included for over 100 parking spaces. The scheme comprises of two apartment blocks to provide much needed residential properties in a mainly commercial area.