Spannenberg & Son Additions & Extensions


The best way to give your house extra living space like bedrooms, a living room and bathroom, without using up yard space is to add a first floor addition. First floor additions are quicker to build as we don't have the time consuming process of foundation work and you can generally live in the house while construction is underway.

We hear many times that clients are concerned that their first floor addition will look like a box, simply plonked on top of their home without consideration for the whole structure. We bring the very best of our almost five decades of experience to create a design that blends in perfectly with your existing home, has style and complete functionality, looking like it was always meant to be there.


If you are looking to add only 1 or 2 rooms or to expand your existing living room then a ground floor extension can often be the best approach. Matching your bricks and roofing materials with your existing home ensures that your extension will not look like an add on.

Having spent almost five decades perfecting the perfect extension, our expertise in design and execution means you will be amazed at how much difference just a few metres extra to your living area can make. With a focus on passive solar design, any addition or extension is also geared to reduce the operational costs of your home, creating a cleaner, greener home to live in.

Getting Started

Most people enter the journey of a home renovation or extension without any previous experience or knowledge about how the building process works or what, if anything, they have to take care of. At Spannenberg & Sons, we are here to take the entirety of the project out of your hands so you can enjoy the journey and concentrate on what’s most important, you and your family.

  Lets meet - We will meet on site for a nominal fee to discuss your requirements and design options to meet your style and budget.

  Design - If you don’t already have plans, we will provide a sketch design including front elevation and floor plan to fit your requirements.

  Formal Quotation - We will provide a thorough and itemised written quotation, including your prime cost items and price options.

  Proceeding - On acceptance of our quotation we organise the engineering details, energy efficiency assessments (BASIX), building specifications and working drawings and then submit it all to council for you.

  Contract Signing - We meet up and sign a plain English fixed price contract supplied by the HIA.

  Construction - You will be kept updated and informed through every stage, with your personal Project Manager or Ben Spannenberg available at all times.

  Completion - We carry out a detailed inspection of the completed works at the end of the job to check that it meets our high standards. Any work items requiring review will be attended to by our team to guarantee a quality finish on completion.

  Maintenance and Warranty - We provide a full six-year structural warranty and attend to any issues or any rectification works that require completion during the defects liability period of three months.