Open-plan living space with a roof lantern, built by Zeta Construction in Sussex

Design & build contractor

Luxury home conversions in Sussex & Surrey

From the first sketch to the final reveal, we design and build stunning loft, basement and barn conversions, on budget, with clear communication every step of the way.

Federation of Master Builders memberTrustMark approved

Reviews

What our clients say

Accreditations

Fully qualified builders you can trust

Federation of Master Builders

Federation of Master Builders

Members must meet strict criteria before joining and commit to a stringent code of practice.

TrustMark Approved

TrustMark Approved

The only government-endorsed quality scheme for work carried out in or around your home.

See us at work

Finished work across Sussex & Surrey

A short look at some of the conversion projects our team has completed.

Why homeowners choose us

A conversion experience that exceeds expectations

01

Design & build under one roof

One team takes your conversion from initial ideas to the finished space, so you have a single point of contact throughout.

02

Built to budget

We plan carefully from the outset and always aim to keep your project within the agreed budget.

03

Communication throughout

You'll be kept informed at every stage of your conversion, with no surprises along the way.

04

Trusted by repeat clients

Homeowners, landlords, developers, local authorities and housing associations turn to us again and again.

A Zeta Construction builder at work on a conversion site

Meet the team

The people who build your conversion

Whether we're converting a loft, digging out a basement or restoring a barn, our philosophy stays the same: exceed our clients' expectations, keep within budget and maintain communication throughout.

You'll work with the same dedicated team from your first consultation to handover.

Book a free consultation

Our process

Four simple steps to your new space

  1. Step 1

    Free consultation

    We talk through your loft, basement or barn, your ideas, budget and timescales.

  2. Step 2

    Design & planning

    Your conversion is designed around how you want to live, ready for approval.

  3. Step 3

    Build

    Our team transforms your space with regular updates and clear communication.

  4. Step 4

    Handover

    We walk you through your finished conversion and hand over the keys.

FAQ

Your questions, answered

We carry out loft, basement and barn conversions across Sussex and Surrey, including Brighton & Hove, Horsham, Haywards Heath, Lindfield, Crawley and Reigate.

Start your project

Book your free home conversion consultation

Tell us a little about your plans and we'll be in touch to arrange a convenient time to talk.