additions

additions

Discover period home additions by Arciform, where we design and build seamless custom expansions that merge flawlessly with your home's storied architecture.

A home addition can integrate naturally with your home, enhancing its character while providing the additional space you are looking for. We carefully consider architectural details, proportions, and materials to ensure a seamless blend of old and new.


In Portland's historic neighborhoods, we navigate the approval process, managing details, setbacks, lot coverage, and other city requirements to ensure smooth progress. With decades of experience, we navigate designing and building your addition both professionally and creatively.


A custom home addition improves your lifestyle, whether it's a light-filled kitchen expansion, a private primary suite, or a connection to the outdoors. We unite the new with the existing, considering codes, systems, and finishes for complete harmony.


Start planning your historic home addition and schedule your complimentary consultation with our design and build experts.

A well-planned addition can transform how you live in your home.

Whether you're expanding for a growing family, creating space to age in place, or finally getting that sunroom, we’ll help you design an addition that looks and feels like it’s always been there.

LET'S EXPLORE WHAT YOUR HOME CAN BECOME

A well-planned addition can transform how you live in your home.

Whether you're expanding for a growing family, creating space to age in place, or finally getting that sunroom, we’ll help you design an addition that looks and feels like it’s always been there.

LET'S EXPLORE WHAT YOUR HOME CAN BECOME

“If you’re looking for someone to create a space that seamlessly integrates with the rest of your house – especially an older historic home – I could not recommend Arciform highly enough.”

Dan Volkmer, Portland, OR

“The work crew did a great job of paying attention to small details so that the new part of our house flows seamlessly with the old and the new construction is very high quality as well. The crew also did a great job of being respectful of our family, as we lived in a portion of the whole house during almost all of the time of the remodel process. Thank you to one and all!”

Michelle, Portland, OR

“We have used Arciform for the remodel of our 1909 home in Portland Heights. Our project involved most of the house, in 3 phases over the course of a few years. We are absolutely thrilled with the end result. Arciform is a highly professional team, from start to finish.”

Lynn, Portland, OR

“This is an amazing design/build company. Anne and Richard have created something very special, highly ethical with the highest standards of service.”

Gretchen N., Portland, OR

“I did a significant remodel of my 2nd floor with Arciform about 18 months ago. They provided a lovely design, meticulous specifications and accurate bid and a high-quality finished product.”

Jan N., Portland, OR

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