Accessory Structures

At Io we specialize in the design of historically sensitive carriage houses. These detached structures provide additional enclosed spaces to provide vehicle parking, storage, home gym/office/studio, and/or even an accessory dwelling unit (ADU) such as a granny flat apartment. Our carriage house design process works to:

Provide much needed covered parking, storage, and/or shop space on your property.

Optimize building costs by adding a second level living, home-office, or studio space.

Create multi-generational housing or fantastic guest spaces.

Provide a potential revenue stream in the form of an Accessory Dwelling Unit (ADU), if allowed in your city.

ADU's also offer affordable housing options in expensive historic neighborhoods

Support community vitality while reducing automobile infrastructure and preserving open space, through smart density.

Start My Project

Before we get started, please tell us more about your project! If we determine that your project is a good fit for our expertise, someone from our team will be in touch with you about the next steps within 1-2 days!

Architectural Sketch
  • Base Map
  • Basic Code Review
  • Initial Site Visit & Meeting (1hr)
  • Vision Board
  • Sketch Floor Plans
  • Perspective Sketch
  • Budget
  • Virtual Design Review Meeting (1hr)

Project Planning

The first step in realizing the carriage house of your dreams is to engage in our project planning service, where we establish the big idea and budget for your project!

On-Site Meeting

We meet with you on-site to discuss your project, and identify initial opportunities and potential constraints.

Code Review

We research any potential restrictions (municipal zoning ordinances and HOA requirements) that might impact the proposed design.

Concept Plan

Our team of designers works with you to develop a vision for your project. This conceptual plan identifies the style, overall massing, and preliminary layout - painting a picture for what your carriage house can be!


This exercise is more than just a pie in the sky wish-list for your carriage house – we work with you to discuss your budget options, and develop phasing plans so that you can move forward with confidence.

Our Projects

What our clients are saying...

Andy Monaco

It was such a great pleasure working with Shalae and Io LandArch on not only one, but two EM:HE builds! She was able to listen, and hear, our needs as the client, quickly turn around a clear, cohesive plan, and execute that plan and vision during the install of the landscape. The final landscaping product truly complimented the architecture of the house and successfully blended traditional garden motifs with contemporary styling and modern amenities.

Amelia Jones

Io worked with me over the course of a winter to develop the ideas I had for my yard and the vision I had for living in it. They added artistic and historical elements that are appropriate for the style and time period of my house. I appreciated their monitoring of the installation process so that the end product was as successful as the exciting plans suggested it would be. I am really happy with the results.

Lauren Weiss

I wanted to drop you a line to say a big thank you to you and your team. Our yard is exploding with plant growth, all the grasses and sages are so happy. Zack, who wanted to sell the house before because he hated the maintenance now loves sitting in his little private grass zone and watching the bees. This yard is already bringing us so much happiness ❤️🌱

Flo Bravo

Working with Io was incredible. Their team is dedicated and highly responsive. When I emailed Sydney with a list of questions, she took the time to call me and talk through everything. The designers listened to our wishes, respected our budget (they didn't present options that weren't realistic!), and delivered a beautiful design. We are so excited for our new backyard!

Emily Lippincott

Natalie at Io LandArch was the perfect partner for my landscape design project. The home I purchased had never had a proper landscape design done and was over 50 years old so really needed some help. Natalie spent tons of time with me, understanding what I wanted and changing things as I changed my mind. She also helped manage the bid process and the construction, offering expert advice along the way. I highly recommend her and the team!

Welcome to Emaurri, a beginning of something truly wonderful! Create your beautiful new architecture or interior design site the easy way.

[emaurri_core_instagram_list photos_number=”6″ columns_number=”3″ space=”tiny” image_resolution=”thumb” behavior=”columns”]