Affordable WOW! Factor

single storey extension

Lymm Master Builders will not only ensure your build is on time as well as on budget but we will always design and build affordable wow factor.

Plans & Permissions

architects drawings

We will organise a fully qualified architect to visit you at home and produce a full set of building plans for you to approve or request design alterations. Once you are happy with the plans we will take care of all necessary permissions as well as local authority building control approval.

Velux Balconies


Rather than basic Velux roof windows to a loft conversion why not add Velux roof balconies that fold flat adding tons of light as well as creating a pop up balcony once opened.

Building your dreams, brick by brick BOOK A FREE SURVEYOR VISIT

What we do for you:

  • Architect Plans & Permissions
  • Price Freeze
  • Stage Payments. You're In Control
  • Planning & Design
  • Stick to Deadlines
  • Local Authority Approval Upon Completion


  • Option 1 - FREE Upgrade to Bi-Fold Doors
  • Option 2 - FREE Upgrade to Velux Roof Balconies
  • Option 3 - FREE Plans & Permissions
  • Option 4 - FREE Upgrade to Electric Underfloor Heating

What We Offer:

  • A Build That Doesn't Stop & Start
  • We Will Be On-Site Mon-Fri 9am to 4pm
  • We Won't Ask For More Money, unless you ask for alterations
  • FREE, No Obligation Onsite Survey
  • Emailed Quotation Within 24 Hours

About Lymm Master Builders

Lymm Master Builders are experienced builders based in Lymm and St. Helens. Lymm Master Builders are not just Builders but Master Builders, offering affordable fully insured house extensions, loft conversions, orangeries and garden rooms.
We use the very best architects offering a fully project managed end to end build.
Lymm Master Builders work closely with local authority building control ensuring a quality extension project that meets building control legislation.
Lymm Master Builders observe the strictest health and safety practises to ensure onsite safety four our workers and the public alike. Lymm Master Builders are fully insured builders for clients added peace of mind knowing your extension build is in the safest of hands.
Our survey team specialise in listening to our clients' needs whilst offering invaluable advice helping to keep costs down whilst still delivering the wow factor when the project is completed ensuring deadlines and budgets are adhered to.
Your allocated project manager will arrange for you to visit our kitchen and bathroom suppliers to choose your kitchen and bathroom using our account and discounts saving you thousands of hard earned pounds.

Book A Free Surveyor

Please see our project stages to help understand and simplify the process if you have never had a house extension built before.

  • Free surveyor visit to discuss project.
  • Paperwork outlining the project in full.
  • Architect visit to draw up plans.
  • Fully broken down quotation emailed within 24 hours of surveyor visit.
  • All necessary permissions applied for by Lymm Master Builders on your behalf.
  • Local building control informed and inspector allocated.
  • Arrival of skips, portaloo and materials.
  • Foundation dig and inspected.
  • Foundations completed and inspected.
  • Build to wall plate (up to roof height) and inspected.
  • Construct roof and inspection.
  • Install windows and doors and inspected.
  • Internal plumbing and electrics and inspected.
  • Completion of internals such as kitchen, flooring etc.
  • Final inspection by local authority to sign off project and issue a completion certificate.

What our clients say about us