I'm looking for a New Zealand born interior designer or architect
working in New York.

Hello.

David Howell of New York-based David Howell Design (architecture &
interior design) is a native of Auckland, New Zealand.

David Howell Design
200 Park Avenue South
Suite 1518
New York NY 10003 - 1503
Tel 212-477-7700
http://www.davidhowell.net/


 "FOR YEARS, A MANHATTAN couple dreamed of owning their upstairs
neighbor's apartment, a penthouse with a generous skylight and an
expansive balcony. But when they were finally able to buy the
2,200-square foot apartment, its cramped bathroom and awkwardly placed
kitchen were hardly the stuff of reverie.
Enter David Howell Design, the firm of a New Zealand-born architect
who had worked with the couple previously."
http://www.interiordesign.net/id_article/CA455270/id?stt=001

'...a first in the hospitality arena from New York-based David Howell Design.
"It's the sort of design that would go equally well in an airport,"
says David Howell, the firm's Auckland, New Zealand-born and educated
principal who previously worked for Clodagh.'
http://www.highbeam.com/library/doc0.asp?docid=1G1:80194975


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Another prominent New Zealander in the field of architecture in New
York is Mark Wigley, Dean of Architecture at Columbia University.

"Columbia University Professor of Architecture, NZer Mark Wigley
bemoans the divide between theory and practice at a Rotterdam
symposium to debate the future of the city."
http://www.nzedge.com/media/archives/archv-arts-architecture.html


MARK ANTONY WIGLEY
Dean of Architecture
Columbia University
http://www.columbia.edu/cu/ccls/fac-bios/wigley/faculty.html

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search strategy:
"new zealand * architect" manhattan

I hope this helps.  If anything is unclear, please let me know via the
"request clarification" feature. Thanks.

Perfect! Just what I wanted.