WE REMAIN OPEN FOR BUSINESS! If you wish to set up a Design Consultation, contact us TODAY!
WE REMAIN OPEN FOR BUSINESS! If you wish to set up a Design Consultation, contact us TODAY!

The 8 step process of building a side return extension

quote 1

Free quotation

You can obtain your own estimate using our online price calculator. Whether you are looking to build side extensions, do a mansard loft conversion or find out an estimated price for other side return ideas, you can easily plan your side return costs. We survey your property and offer you a free, no obligation estimate for the works. Alternatively, you may wish to book a Premium Site Visit.

design phase 2


We can only work with permitted development extensions so we prepare and submit the planning application to the Local Authority. We act as your agent during the currency of the application and deal with any enquiries on your behalf so all modern house plans to be accepted.



Should you appoint us to do so, we serve Notice to the adjoining owner and undertake a full Schedule of Condition. If necessary, we arrange for a full Party Wall Award to be drawn up between you and your adjoining owner. No side extensions are built without approval.



Our Structural Engineer designs your scheme and prepares the beam calculations for the side return extension. We produce the working drawings for submission to our Approved Inspector for the purposes of Building Control. Modern house plans require approval, but they are worth the wait.

build phase 5


We strip out the existing kitchen and erect a temporary kitchen if you plan to live at the property during the works. We build the new party wall, pour the foundations and install the steelwork for the side return kitchen extension.



  • We construct the roof and install the doors and roof lights with a modern interior design in our minds.
  • We undertake 1st fix plumbing and electrics.
  • We install the underfloor heating, screed and plastering.


  • We install the kitchen, or accommodate the kitchen company you have employed to undertake the works.
  • We lay the floor tiles or engineered wooden floor for the side return kitchen extension.
  • We decorate and undertake 2nd fix electrical and plumbing works according to your kitchen extension ideas.
handover 8


  • We handover the build including a folder containing the Building Control completion certificate, Gas Safe & NICEIC certificates and 10 year specialist guarantee for your side extension.
  • We arrange for our professional photographer to visit and provide you with the full high resolution images after the shoot of the permitted development extensions.
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