C
Calco ConstructionNewbury · Berkshire
01635 529262
Calco Construction building site in Newbury Berkshire showing a new build home under construction
Builders · Newbury · Est. in Berkshire

We build the structures that hold the rest together.

From new-build homes and commercial developments to whole-house refurbishments and listed conversions — Calco Construction Ltd delivers craft, programme and certainty across Berkshire, Hampshire and beyond.

2015
Project archive begins
13+
Years on site
Newbury
Hampshire · London
01635
529 262
About the company

A Newbury builder with range.

From game keeper's cottages to assisted living.

Calco Construction Ltd is a general contractor based at The Haven, in the heart of Newbury town centre. We work for private homeowners on sensitive rural sites, for commercial clients on multi-use developments, and for housing providers converting existing stock into much-needed accommodation.

Our project record reads like a tour of the region: a game keeper's cottage on a private North Hampshire estate, a security lodge at Greenham Business Park, a timber frame build at Wolverton Common, and the conversion of a former office into assisted living flats — all delivered with the same attention to programme, detail and cost.

We don't chase volume. We pick the right projects, resource them properly, and finish them.

New Build Homes

Bespoke dwellings from foundation to handover — timber frame, masonry, or hybrid.

Commercial & Mixed Use

Security lodges, multi-use sites, and conversion of commercial property to residential.

Refurbishment & Extension

Full refurbishments, two-storey side extensions, single-storey rear extensions.

What we do

Trade by trade, building by building.

Three core capabilities — one accountable contractor on your site from breaking ground to handing over the keys.

01 / New Build

New Build Construction

From a single countryside cottage to a pair of detached four-bed family homes, we deliver new build projects with traditional masonry and modern timber frame methods.

  • Private estates & country houses
  • Detached & semi-detached homes
  • Timber frame construction
  • Security lodges & gatehouses
02 / Commercial

Commercial & Conversion

Multi-use commercial sites, change-of-use schemes and the conversion of existing buildings into new residential or assisted-living accommodation.

  • Multi-use commercial development
  • Office-to-residential conversion
  • Assisted living flats
  • Business park facilities
03 / Refurb

Refurbishment & Extension

Full property refurbishments paired with two-storey side extensions and single-storey rear extensions — bringing tired buildings back to life.

  • Total refurbishment programmes
  • Two-storey side extensions
  • Single-storey rear extensions
  • Listed & sensitive sites
Project archive

Thirteen years on site.

A selection of completed Calco Construction projects — from a 2015 game keeper's cottage in North Hampshire through to a 2022 office-to-assisted-living conversion.

Nov 2015

New Game Keeper's Cottage

Private North Hampshire Estate
2015

New House

Kingston Upon Thames
April 2018

New Security Lodge

Greenham Business Park, Newbury
Feb 2019

Multi-Use Commercial Site

Commercial Development
May 2019

New 4 Bed Cottage

New Barn — four dwellings delivered
Sep 2020

New 4 Bed Dwelling

Highclere, Hampshire
Oct 2020

2no. New 4 Bed Detached

Paired detached houses
Mar 2021

Total Refurb + Extension

Two-storey side & single-storey rear
May 2022

New Timber Frame Build

Wolverton Common
Oct 2022

Office → Assisted Living

Conversion to assisted living flats
How we work

From enquiry to handover.

A clear, four-stage process — so you always know what's happening next on your site.

Enquiry & Site Visit

Call 01635 529262 or email [email protected]. We'll visit the site, listen to the brief and review any drawings, planning approvals or listed building consents you already have.

Quote & Programme

We return a priced quotation with a realistic programme. For larger new build and commercial schemes we'll work alongside your architect, structural engineer and planning consultant.

Construction On Site

A dedicated Calco site team takes the project from groundworks to weathertight, then through first and second fix. We hold regular site meetings and keep you updated at every stage.

Snagging & Handover

We complete a full snag, hand over the keys, and provide the documentation you need. We remain contactable afterwards — most of our work comes from referral.

Get in touch

Let's talk about your project.

Whether it's a new build on a private estate, an office-to-residential conversion, or a full refurbishment with extension — call the Newbury office or send the form across.

Telephone
Head Office
The Haven, Rear of 16–18 Market Place, Newbury, Berkshire RG14 5BD
Call 01635 529262 Send enquiry