The B/OS practice is driven by the pursuit of quality – a belief that our surroundings directly influence the quality of our lives, whether in the workplace, at home or the public spaces and structures in between. It is not just buildings but urban design that affects our wellbeing. We are concerned with the physical context of a project, sensitive to the culture and climate of their place. We have applied the same priorities from housing to education to furniture.

The B/OS philosophy and values that inspire every project are the same regardless of scale or size. This explains why no detail is too small in its importance for the B/OS practice and why the same amount of care and attention will be lavished on the design of a door handle, a tap, or a piece of furniture.

These, after all, are the elements of the environment that we physically touch every day of our lives. The B/OS practice believes the quality of a project is not necessarily related to how much it costs, but rather how wisely the resources of time and money are spent. The setting of standards is more about an attitude of mind in defining goals and honouring commitments. In that sense the most important things have not changed - in particular the philosophy of quality and optimism at the most personal of levels.



+64 09 358 3882

Level 9, South British Insurance Building
9/3-13 Shortland Street, Auckland City, NZ



+64 03 929 0613

23B Walkers Road



Andrew is a Registered Architect with over 20 years experience in both New Zealand and Overseas. Andrew graduated in 1983 and worked in various London & Berlin architectural offices from 1983-1988. Returning to Auckland he worked as an Architectural Graduate before starting his own Architectural firm in 1990. In 1994 he joined forces with Michael O'Sullivan and formed Bull O'Sullivan Architecture Ltd.

Andrew has managed and contributed to a number of complex commercial projects that require working as a team with fellow consultants. His experience includes liaising with council on planning and building issues and dealing with school trust boards, club committees, project managers, planners, engineers & quantity surveyors.

Michael John O’Sullivan is a Draughtsman and a Registered Architect. He is a practical and sensible thinker that has built several projects in the South Pacific.

He has been heavily involved with Auckland University teaching Studio and supervising Masters Students thesis work.

He enjoys physically building and making furniture for his residential clients.

His success as an Architect has been well documented in the public eye.

Glenn Watt is a practicing architect of immaculate thoroughness. He was a sole practitioner for several years before joining Bull O'Sullivan Architecture. He has extensive experience in large scale commercial, public and industrial architecture.

Sean Flanagan

Brad Bonnington

Sou Muy Ly

Annabel Standidge

Ying Yan Zhou

Vasilije Rakovic

Alistair Toto

Alina Domanova

Emma Rea

Rata Scott von Tippleskirch

Nick O'Connell

Paea Wolfgramm


NZIA Wellington Architecture Award - HousingKelp Home2023

NZIA Auckland Architecture Award - HousingKeene Family Home

Resene Colour AwardKeene Family Home

NZIA Auckland Architecture Award - HousingKauri Home

NZIA National Architecture AwardFonua 'o e maná

NZIA Canterbury Architecture Award - Public ArchitectureFonua 'o e maná

NZIA National Architecture AwardKeene Family Home

Interior Awards - Finalist - Multi UnitGustorob2022

Resene Colour AwardGustorob

NZIA National Architecture AwardWaterhouse Home

NZIA Waikato/Bay of Plenty Award - HousingŌpito Bay Home

NZIA Waikato/Bay of Plenty Award - HousingWaterhouse Home

NZIA Auckland Architecture Award - Small Project ArchitectureFitasfeck

NZIA Canterbury Architecture Award - HousingGreen Family Home

NZIA Canterbury Architecture Award - Housing - Multi UnitGustorob

NZIA Auckland Architecture Award - EducationTe Kōhanga Reo o Ngā Pihi o Te Purapura Pai2021

Interior Awards - Winner - ResidentialToto Whare

NZIA Canterbury Architecture Award - HospitalityEruption Brewery

NZIA Canterbury Architecture Award - EducationTe Hohepa Kōhanga Reo

Interior Awards - Finalist - CivicTe Hohepa Kōhanga Reo

NZIA Auckland Architecture Award - Housing - Additions and AlterationsConnor Concrete Villa Residential

NZIA Auckland Architecture Award - Commercial ArchitectureKotiro Nui

Resene Colour AwardTe Kōhanga Reo o Ngā Pihi o Te Purapura Pai

NZIA Sir Ian Athfield Award for HousingToto Whare2020

NZIA National Architecture AwardToto Whare

NZIA Canterbury Architecture Award - Housing - Additions and AlterationsToto Whare

NZIA Auckland Architecture Award - Small Project ArchitectureRaoul Island Hut

NZIA Canterbury Architecture Award - Housing - Multi UnitChen Anselmi Units2019

NZIA Auckland Architecture Award - HousingLovers Leap

NZIA Southern Architecture Award - HousingBeck Family Home2018

NZIA Auckland Architecture Award - Housing - Additions and AlterationsJohnston Family Home2017

NZIA National Architecture AwardArrowtown

NZIA Southern Architecture Award - HousingArrowtown

NZIA Auckland Architecture Award - Public ArchitectureLesieli Tonga

NZIA National Architecture AwardLesieli Tonga

Resene Colour AwardLesieli Tonga

NZIA Waikato/Bay of Plenty Award - HousingAndrews Family Home

NZ Wood Awards - FinalistLyttelton Studio Retreat2015

NZIA National Architecture AwardOstend Road

NZIA Auckland Architecture Award - HousingOstend Road

NZIA Sir Ian Athfield Award for HousingLyttelton Studio Retreat

NZIA Canterbury Architecture Award - Small ArchitectureLyttelton Studio Retreat

NZIA National Architecture AwardLyttelton Studio Retreat

Timber Design AwardsEvans Family Home2014

Best of NZ Home Design Series - 2nd PlaceWood Family Home2012

Timber Design AwardsWood Family Home

Home of the Year - WinnerHarvey Family Home2011

Home of the Year - Top 10 shortlistCartwright Family Home2010

NZIA Gold Medal - FinalistO'Sullivan Family Home

Home of the Year - FinalistO'Sullivan Family Home2009


Renowned architect (and wrestler) has grand designs after winning swag of awards, Sunday Star Times, 2017

Kauri HomeBull O'Sullivan Architecture's Kauri Home, Homestyle Magazine

Waterhouse HomeYoung family built home 'on the smell of an oily rag'

Wood Family HomeOuttakes: Devonport house by Michael O'Sullivan, Homes NZ
Bathrooms: resplendent in black marble, Home Magazine
Kitchens: an elegantly crafted Auckland design

Lyttelton Studio RetreatBeautiful new Lyttelton office for Auckland architect, NZ Herald
O'Sullivan Studio, Architecture Now
An architecture studio built on an extreme Lyttelton hillside, Home Magazine
Heavens' Embroidered Cloths, by Tessa Forde

Ostend RoadWood-worked Waiheke house makes the cut for design awards, NZ Herald, 2014
A warm, thrifty and inventive Waiheke Island home, Home Magazine

Lesieli TongaA blanket of sweet frangipani, Architecture Now
Tongan Meeting house wins major architecture award, RNZ

ArrowtownNational award for family home, Otago Daily Times, 2017
Contemporary Arrowtown house clad in steel bucks the establishment, Stuff, 2017

Toto WhareFormer state house in Lyttelton scores architecture award, Stuff, 2020
A place of whakapapa, Architecture Now

Harvey Family HomeHome of the Year 2011
At home in the landscape, New Zealand Herald, 2011
Michael O'Sullivan goes wild on the west coast, Home Magazine
Outtakes: The Kare Kare House, Our Home of the Year 2011 By Michael O'Sullivan, Home NZ

O'Sullivan Family HomeO'Sullivan Family Home on Campbell Live
The Great Compression, Dwell Magazine
Homing in on good design, Stuff, 2010
This 112-square-meter home is a big upgrade for this family of five, Home Magazine

Kelp HomeGrand Designs NZ house in Chatham Islands wins architecture award, Stuff, 2023

Johnston Family HomeOnehunga 'working woman's cottage' gets an award-winning update, Stuff, 2017