Unlock the potential above your head.
At Harry Antonious Construction Ltd. we help you make the most of your home by turning underused attic space into stylish, practical rooms. Whether it’s an extra bedroom, a dedicated office, or a peaceful retreat, a loft conversion is one of the smartest ways to add value and space without extending your home’s footprint.
A loft conversion transforms your unused attic into a fully functional living area — all without altering the external footprint of your home. It’s a cost-effective way to:
With Antonious, your conversion will be expertly designed to match your property and lifestyle — ensuring it blends seamlessly with the rest of your home.
One team. One smooth experience.
We handle everything — from the first sketch to the final clean-up.
We visit your property to understand your goals, measure up the space, and assess feasibility. You’ll get expert, no-pressure advice based on what will work best for your home and budget.
Our team works with trusted architectural partners to create a bespoke design tailored to your needs. If planning permission is required, we’ll manage the application process for you.
Once the designs are approved, we begin building, using experienced tradespeople, quality materials, and regular progress updates. Every step is managed carefully to keep disruption to a minimum.
Your new space is finished to the highest standard, cleaned, and handed over ready for use. We take care of the details, so you can start enjoying your new space straight away.
A loft conversion is more than just a building project — it’s a transformation of how you live in your home.
Often, not many loft conversions fall under permitted development. But if you live in a conservation area or your design includes significant changes, planning might be required. We’ll advise you from day one and take care of the paperwork.
Most projects take around 6–10 weeks, depending on complexity. We’ll give you a clear schedule and keep things on track.
Not always, we’ll assess your property to check for head height, roof structure, and access. If it’s not feasible, we’ll tell you upfront.
We cover all common types:
In most cases, no. We work in a way that allows you to stay in your home, keeping mess and disruption to a minimum.
If you’re ready to create more usable space without moving house, a loft conversion could be the perfect solution. With over 25 years of experience and a reputation for quality craftsmanship across Cheltenham, we’re ready to bring your vision to life.
If you’re ready to create more usable space without moving house, a loft conversion could be the perfect solution. With over 35 years of experience and a reputation for quality craftsmanship across Cheltenham, we’re ready to bring your vision to life.
