A newly completed detached home built by Mountain River Ltd with a fresh gravel driveway

Family owned · 30+ years experience

Homes built with an obsession for detail.

We Create. We Build. We Transform.

Mountain River Ltd is a family-run construction company building new homes, renovating properties and transforming outdoor spaces across the region — delivered to the highest standards of quality and compliance.

30+
Years of experience
120+
Projects delivered
100%
Family owned & run
Full
Compliance & sign-off

What we do

Three disciplines, one standard

Whether we are creating a home from bare ground, rebuilding an existing property or reshaping a garden, every job is run with the same care, planning and compliance.

We Create

New Build Homes

From foundations to final finish, we design and build individual homes that are made to last. Every project is delivered to current Building Regulations with full documentation and sign-off.

  • Bespoke detached and family homes
  • Groundworks, structure and full fit-out
  • Building control liaison and warranties

We Build

Renovation & Extension

We renovate, extend and remodel existing homes with a focus on structural integrity and clean, precise workmanship that blends seamlessly with the original property.

  • Extensions, garages and outbuildings
  • Structural alterations and steelwork
  • Full refurbishments and conversions

We Transform

Outdoor Spaces

Driveways, terraces, garden rooms and landscaping designed and constructed to the same standard as the homes we build — durable, well-drained and beautifully finished.

  • Driveways and access roads
  • Patios, terraces and retaining walls
  • Garden rooms and outdoor living
Detail of composite cladding and precise brickwork on a Mountain River Ltd build

Our strength

Attention to detail & compliance

We believe the difference between a good build and a great one is in the details you do not see. Every project is planned, documented and delivered to current Building Regulations — so the work stands up to scrutiny long after we have left site.

  • Precision workmanship

    Set out correctly, built accurately and finished to a standard we are proud to put our name to.

  • Full regulatory compliance

    Building control liaison, structural sign-off and complete documentation on every project, without exception.

Learn more about us

Recent work

Projects we are proud of

View all projects
Birchfield House — New Build project in Cranleigh, SurreyNew Build

Birchfield House

Cranleigh, Surrey · 2024

A five-bedroom detached family home built from the ground up on a private woodland plot, complete with a new sweeping gravel driveway and full landscaping.

  • Full groundworks and foundations
  • Traditional masonry construction
  • Slate roofing and rendered elevations
Oakside Garage & Studio — New Build project in Godalming, SurreyNew Build

Oakside Garage & Studio

Godalming, Surrey · 2024

A detached double garage with a studio above, finished in dark composite cladding and reclaimed stone quoins to complement the main house.

  • Concrete slab and blockwork shell
  • Structural timber roof and steel beam
  • Composite cladding and render
Meadow Garden Room — Outdoor project in Bramley, SurreyOutdoor

Meadow Garden Room

Bramley, Surrey · 2023

A stone and block garden room with a vaulted timber roof, set on a raised terrace overlooking open countryside for year-round outdoor living.

  • Raised paved terrace and foundations
  • Blockwork with natural stone facing
  • Hand-cut vaulted roof structure
“We treat every home as if it were our own. That mindset — and a genuine care for getting the details right — is what has kept us building for over three decades.”

Alistair Bell · Founder & Project Director