Home Extensions and Garden Rooms in East Grinstead
Halsey Construction

Halsey Construction is a family-run construction company based in Crawley Down, West Sussex. In business for over ten years, we offer building services to residential and commercial clients, including home extensions, renovations, hard landscaping, and garden rooms

We are widely regarded for the close relationships we build with clients, remaining available throughout each project to offer advice and support. Working closely with architects and building inspectors, our team is also on hand to assist with planning permission applications and provide a CAD design service, bringing your vision to life from the outset. 

We carry out full project management facilities, removing the stress of liaising with multiple building material suppliers, plant and skip hire companies, and local authorities for regulation checks and planning permission applications. This service includes budget and time management.

If you’re looking for a reliable building company to complete your new build or home improvement project – whether home extensions, renovations, hard landscaping, or garden rooms – we’re the company of choice for many in Crawley Down, East Grinstead and the surrounding areas. 

Please contact us to make an appointment.


Bespoke Services From Our Construction Company

Halsey Construction offers payment plans so projects can be completed with a practical and budget-friendly repayment schedule. Spreading the cost over a number of months means there are no unexpected surprises. We also provide Extra Work forms, so any further construction or renovations will be clearly costed and outlined.

All quotations are detailed, with guarantees confirmed in advance. We can arrange site visits to show you examples of our previous work, such as single – and double-storey extensions, block paving, hard landscaping, and garden rooms.


Our East Grinstead page provides a full list of our building and home improvement services; the following is just a sample of what we can do for you.

  • New Build Construction

  • Single-Storey Extensions

  • Double-Storey Extensions

  • Block Paving Surfaces

  • Renovations and Refurbishments

  • Groundworks and Foundations

  • Interior Structural Alterations

  • Utility Installations

Give us a call
01342 715295
Halsey Construction
We Build Relationships
Contact Halsey Construction on 01342 715295 for house extensions, renovations, and garden rooms in East Grinstead and the surrounding areas.
whatsapp icon