A4 Architects

A4 Architects A4 Architecture Planning Interiors Partners Kay Stevens Rosa and Augusto Rosa founded A4 in Bar Harbor, Maine in 1999.

A4 is an established multi-disciplinary, internationally experienced firm of design professionals practicing in the areas of residential, commercial and municipal architecture, interior design, planning, graphic design and planning. In their more than 25 years (each) of professional experience, they have collaborated on projects for the 1992 Olympic Games in Barcelona prior to practicing in Maine

for nearly 20 years. A4 is a member of the American Institute of Architects and the US Green Building Council. A4 partners hold licenses in Maine, Florida and Brazil and are LEED trained.

08/17/2023

Lake house

Lake House
08/13/2021

Lake House

A4's new baby
06/05/2021

A4's new baby

A4's Augusto Rosa and Kay Stevens-Rosa repurpose an original 1880's Bar Harbor School (and subsequent Masonic Lodge) bui...
02/06/2021

A4's Augusto Rosa and Kay Stevens-Rosa repurpose an original 1880's Bar Harbor School (and subsequent Masonic Lodge) building into a pair of luxury lofts in a lightning-speed and nail-biting transformation. Read about the challenges (but oh, the fun that was had!) and see the results here...

An architect couple transforms a 19th-century Masonic hall into a pair of inventive living spaces.

Summer constrution
05/27/2020

Summer constrution

Site visits at 12F has it’s compensation, the beauty of light and shadows playing together 🙂
01/17/2020

Site visits at 12F has it’s compensation, the beauty of light and shadows playing together 🙂

A4’s two new projects coming up!
12/12/2019

A4’s two new projects coming up!

The library by A4architects at the Bar Harbor Bar Harbor Designer Showhouse - La Rochelle
07/21/2019

The library by A4architects at the Bar Harbor Bar Harbor Designer Showhouse - La Rochelle

05/15/2019

Boat House anyone?

The Shore House - one of our favorite experiences!
03/27/2019

The Shore House - one of our favorite experiences!

Shore House, as its owners call it, is a new house with deep roots in history, intimately connected to both time and place. Its architecture reflects the strong vernacular traditions of downeast Maine but in a modern enough way that … Continue reading →

Address

69 Cottage Street
Bar Harbor, ME
04609

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+12072880954

Website

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