💡 Don't move, Improve (AL it)
Find out what your extension is really worth
Single-Storey Extension Drawings & Prices
For rear, side, wraparound, garage-conversion, front-porch and kitchen extensions across Milton Keynes, London and the surrounding counties.
Price from
£1195
Planning permission
A complete set ready for your planning submission:
- Measured survey drafted into accurate existing plans
- Proposed floor plans, elevations and site plan to council standards
- All standard supporting documents prepared and checked
- We liaise with the council and planning officer through to a decision
Price from
£850
Structural calculations and drawings
Prepared and signed by a qualified structural engineer:
- Beam, foundation, wall and roof-load calculations to UK standards
- Steel/RSJ sizing, padstones and connection details
- Builder-ready and accepted by Building Control
Price from
£595
Building regulation drawings
The technical drawings your builder and Building Control actually build from:
- Detailed floor plans, sections, elevations and construction details
- Foundations, walls, roof, drainage, ventilation, insulation and fire-safety detailing
- Fully coordinated with your structural calculations
- Prepared to pass Building Control first time, not to be redone on site
Planning submission fees
(paid to the local authority, not to us)
These are statutory fees set by your council, separate from our drawing fees:
- Permitted Development application: £349 (not included)
- Full householder planning application: £548 (not included)
- We handle the submission and correspondence on your behalf.
The cheapest set of drawings is rarely the one that gets built. A rejected planning application, or a set of plans your builder can't work from, costs far more than doing it right the first time. Our pricing sits where it should: fair, transparent, and backed by real projects on the ground not the highest, and never a gamble.
Planning drawings from £1,195
Fixed price. No hourly surprises. Quote confirmed before we start.
What each service costs
The Complete Approval Pack: from £2,395
Everything you need from idea to approved-and-buildable, bundled and discounted:
Planning drawings + Building Regulation drawings + Structural calculations + Measured survey, bundled and discounted.
Buy it all together and save versus paying for each stage separately — one team, one point of contact, one fixed price. This is the option most homeowners choose, and the one that avoids the "the plans don't match" headaches on site.
Price from
£150
Milton Keynes
Site Survey
- Full measured survey of your existing property using laser/point-cloud tools
- Accurate to the millimetre, the foundation every good drawing is built on
- Outside Milton Keynes: from £275 (covers travel and time on site)
Why homeowners choose AL-Haitham
- 15+ years and 300+ completed projects: you're not paying for someone's learning curve [CONFIRM figures]
- Autodesk-Certified Revit & point-cloud technology: faster, more accurate drawings, fewer errors
- Fixed, transparent pricing: you know the full cost before we lift a pencil
- One team, start to finish: planning, building regs and structural, all coordinated so nothing falls through the cracks
Ready to find out what's possible?
Start free: Try our 60-second extension cost calculator.
Then: Book your £195 Feasibility Blueprint:
planning-risk check, concept direction and costs, 100% credited to your project if you go ahead.
Prefer to talk? WhatsApp us on +44 7404 086195.
Get a free quote
WhatsApp: +44 74040 86195
E-mail: contact@al-haitham.co.uk
Address: Office F7, Gloucester House, 399 Silbury Blvd, Milton Keynes MK9 2AH