💡 Don't move, AL it.
Find out what your extension is really worth
Milton Keynes · London · Nationwide
Don't move. AL it.
Find out what your home extension is really worth in 60 seconds, free.
Real build costs. Real ROI. Real property value uplift.
No email required. No obligation. Just the numbers you need to make the right decision.
300+
Projects delivered across the UK
200+
Homeowners who stayed and extended their home
50+
Verified 5-star reviews on Google & Facebook
Your free AL it estimate
Know your numbers before you spend a penny
Most homeowners waste months getting quotes before finding out their dream extension doesn't stack up financially.
Our free Property Profit Calculator shows you the real build cost, your projected ROI, and how much value your extension will add to your home — in under 60 seconds.
No architect fees. No awkward calls. No obligation.
Takes 60 seconds · No email required · Used by 300+ homeowners across the UK
Build cost estimate
Accurate regional pricing for
every extension type
Property value uplift
See how much your home's
value could increase
ROI projection
Understand your return
before you commit
Testimonials
What our clients say
300+ projects completed. 200+ happy clients. Here's what some of them told us.
We worked with Al-Haitham on the architecture and structural engineering aspects of our house planning application and had an excellent experience. The team was professional, responsive, and very detail-oriented throughout the process. They guided us clearly through the planning requirements, produced high-quality drawings, and were quick to incorporate our feedback.
What stood out most was their ability to balance creative design with practical engineering solutions, ensuring everything met regulations while still reflecting our vision for the house. Communication was always smooth and timely, which gave us confidence at every stage.
I would highly recommend Al-Haitham to anyone looking for reliable architectural and structural support on planning applications or home projects :)
Jacqueline Jackson
I cannot speak highly enough of AL-Haitham and their team. After a disastrous experience with a previous architect, I was apprehensive about starting the process again. However, from the moment I contacted AL-Haitham , I knew I was in good hands.
Not only did they take the time to understand the challenges I faced with the previous design, but they also offered a fresh perspective and innovative solutions. Their ability to quickly grasp my vision and translate it into a practical and stylish design was truly impressive.
What sets AL-Haitham apart is their exceptional communication and willingness to go the extra mile. Despite being based in a different area, they demonstrated an in-depth knowledge of local building regulations, ensuring a smooth planning process. The entire project was completed within the agreed timeframe, and the quality of the work is outstanding.
I wholeheartedly recommend AL-Haitham to anyone seeking a professional, knowledgeable, and client-focused architect. They are a true asset to the industry.
Mohammed Elhalwagy
Working with Al-Haitham was a great experience. He was incredibly helpful throughout the entire process, always attentive to our needs and quick to offer creative, practical solutions. His professionalism and eye for detail made everything run smoothly. Highly recommended
Sam Wjm
Everything your extension needs under one roof:
From the first sketch to planning approval and building regs we handle it all. Fixed prices, no hidden fees.
Rear, side, double-storey, loft, garage conversion, wraparound. we design
and draw them all. Tell us what you need and we'll make it work
We prepare and submit your full planning application. We know
what councils expect and how to get it approved first time.
Full structural engineering drawings prepared by a qualified
engineer. Everything your builder and building control need,
ready to go.
Detailed building reg drawings submitted directly to building
control. We track approval so you don't have to chase anyone.
HMOs, flat conversions, buy-to- extend. we help property
investors maximise returns through smart architectural planning.
Through our partnership with interior design offices, we bring premium
interior design to your project style and functionality, tailored to you.
See your extension before a brick is laid. We create a free 3D concept so you can visualise the result and feel confident before committing.
Not sure if your council will approve your idea? We submit a
pre-application to test the ground saving you time, money, and
disappointment.
We also support: tender packages, contract administration, party
wall agreements, build-over agreements, kitchen & bathroom
supply, and full construction management.
Still thinking about it? AL it and know your numbers first.
Before you call a builder, get quotes, or stress about planning permission, run our free calculator. It takes 60 seconds and gives you real figures for your specific home, your postcode, and your project.
Join hundreds of homeowners across Milton Keynes, London and the Midlands who used it to make the right call.
Why homeowners across the UK choose AL-Haitham
We're not a faceless agency. AL-Haitham Ltd was founded by Haitham, an architect with 15+ years of experience and over 300 completed projects across Milton Keynes, London, and the Midlands. Every project is handled personally, with direct access to the architect throughout.
Free · No email required · Instant results
We specialise in house extensions and we're completely transparent about pricing. No surprise invoices. No vague "it
depends" quotes. You get a fixed price before any work begins, and you know exactly what you're getting.
Based in Milton Keynes and serving London and the wider Midlands, we combine local planning knowledge with national architectural standards. Whether it's a single-storey rear extension in Bletchley or a double-storey addition in Hounslow. We've done it, and we'll do yours right.
Recent projects
300+ projects completed. Here are a few recent ones.
Side extension, Reigate & Banstead
We bridged the gap on this semi-detached home, unlocking a whole new ground-floor living space. Planning approved. Project delivered.
Luxury outdoor spa & pool,Tadworth, Surrey
Oak-framed pool house with spa, BBQ area, and bi-fold doors. A complete outdoor leisure transformation fully approved and built.
Front porch & ground floor WC, Ealing, London
A practical upgrade that transformed the entrance and added a much-needed WC. Small project, big impact.
Full home transformation, New Malden, London
Rear extension, garage conversion, loft development, and garden annex. A complete reimagining of a four-bedroom family home.
Rear & side extension, High Wycombe
A 3-bedroom semi-detached transformed with a stunning rear and side extension. Modern open-plan living, delivered on budget.
Garage conversion & open-plan redesign, Birmingham
Garage converted to a bright home office, and a new open-plan living area created throughout the ground floor.
Double-storey extension & loft conversion, Hounslow, London
A 3-bedroom semi-detached turned into a spacious family home. Double-storey rear extension plus rear dormer loft, planning approved, project complete.
Trusted partners & verified platforms
AL-Haitham Ltd works with industry-recognised platforms and partners, so you know you're in safe hands.
Email: contact@al-haitham.co.uk
Address: Office F7, Gloucester House, 399 Silbury Blvd, Milton Keynes MK9 2AH
Ready to AL it? Let's talk.
Got a project in mind? Fill in your details below and we'll be in touch within 24 hours. Or if you'd rather talk now, message us directly on WhatsApp.