Renovate, alter, extend, refurbish & more!


family owned and operated

Quality new homes, renovations and extensions

With over 15 years building experience as a Registered Certified Builder and now a Licensed Building Practitioner, Andrew Graham and his team offer superior service, quality workmanship and an eye for detail that is second to none.


Turn your dreams into reality

Dreaming of a spacious new home, an extra couple of rooms or perhaps a deck to take in the views?  Turn those dreams into a reality and significantly increase the value of your home with ADG Builders Ltd. View our services below

New Homes


Full Project Management




Timber Floors

Bathrooms & Kitchens

Decks, Retaining & Fences


Additions & Alterations

Property Face-Lifts

don’t just take our word for it

Hear from our clients

Deck Build

"We have found Andrew’s approach to be thoroughly professional and his construction – state of the art standard. Andrew possesses the rare ability to translate client concepts and ideas into practical, workable outcomes. Thank you Andrew for creating our dream home and for ensuring that our additional property provides a solid return on investment."
Cathy & Atholl Robertson

New Home

"I would have no hesitation in recommending Andrew to others. His work ethic, his decisiveness (I didn’t have to make each and every decision – he just got on with it!), the quality of the work and the fact you were so willing to tackle all the little things that cropped up along the way. Thank you for sourcing and organising all the fixtures – that was one less thing I had to take care of as well."
Debbie Massyn

Piha Retreat

Many thanks to Andrew, Katie & the team from ADG Builders for their work turning our plan from Chris Tate for our Piha Retreat into a reality. As with most projects challenges did come up and Andrew always came to the table with solutions! We are so happy with the work they did and wish them all the very best with their future projects.
Jane brenan

take a closer look

Our projects

Full Refurbishment

Mairangi Bay Home​

Originally a faux Tudor (dated) design this house located in Mairangi Bay, had a complete refurbishment inside and out to enhance the property and bring it to its full potential!

ADG Builders enjoyed working with David Maurice of LTD Architectural and his transformation of the “Brady House” – which went on to win him the Auckland-Northland ADNZ Residential Alterations and Additions Architectural Design Award.

The original house was deteriorating badly and in need of repair. The architect created a bungalow style that enhanced the house’s coastal setting. A new cedar shingle roof was part of the design in order to help it weather more naturally in its environment.

The living area was expanded three-fold with a new outdoor veranda and pergola deck areas. Extensive roof windows replaced dormer windows on the upper level, allowing light to flood in.

New Home

Stanmore Bay Dream House

This two-storey beach side new home was designed by architectural designer Chris Tate and built by ADG Builders over an 11 month period.

Inspired by two traditional boat sheds this unique home situated at the end of picturesque Stanmore Bay, was designed to capture stunning views of the bay.

The gable boat like ends of the home were positioned on the east and west ends of the property to create a symmetrical design and to maximise the property’s potential. A seamless connection to the outdoors is created from the eight metre wide glass sliding door unit in the pavilion. The large bi-fold door opens up the kitchen and dining area for easy indoor-outdoor flow onto expansive decks. 

Design flair can be seen in the architectural project from the integration of joinery colours throughout the home. The two-storey gable ends of the house feature black painted cedar and matte black joinery, while the low pavilion features white cedar with arctic white joinery. The white and black colour palette then continues throughout the interior including the kitchen, which features a 4m long white stone island and matte black cabinets. 

Steel framing was also used in the construction of this new build.  American Oak Timber Floors were also hand crafted throughout.

Featured in trends magazine

New Home

Piha Retreat

ADG Builders helped create something special in a little patch of paradise in Piha.  The owners wanted to build a second dwelling in the native bush of their Waitakere property for use as a holiday home/retreat. The owners/clients wanted this new build on their property to be unique, bold, simple, and environmentally friendly.  Working alongside Chris Tate and his vision for their new modern concept, ADG Builders had the challenging task of building in the Waitakere Ranges whilst taking the utmost care to protect the natural and cultural surroundings of the native bush.

As a second dwelling on the property, the retreat was not allowed a kitchen. Therefore ideas such as using a sliding door to an outside kitchen sink, which can be accessed from the inside, were implemented to create indoor/outdoor flow.  Other design elements such as wool insulation, an outdoor bath, and low eaves for shelter from the hot sun, and floor-to-ceiling double-glazed glass doors were used to create this beautiful holiday home.  The finished result was a subtle black architectural masterpiece built to resemble a glass viewing platform in the treetops.

Featured in trends magazine

Our story

Who are we?

ADG Builders is a family owned and operated building firm established by Andrew & Katie Graham in 2003. 

Andrew has been a Registered Certified Builder since 1997 and a DBH Licensed Building Practitioner since 2010.   With over 25 years of experience in the industry and a wealth of first hand building knowledge – Andrew is an exceptional project manager, builder, craftsman and Director.  

Both Andrew and Katie are passionate about building, decorating and improving properties.  Where others see challenges and lack scope, Andrew and Katie can visualize and interpret the best way to enhance a property and to add value.

At ADG Builders our aim is to consistently provide outstanding work and maintain an excellent relationship with our clients and to continue to be recognized as a reliable and reputable builder on the Hibiscus Coast.

Contact Us

  • 09 424 3858
  • 021 629 046