Beacon Hill Cedar Cottage is one of CAST’s City of Seattle Pre-approved cottage plans

Designed by CAST and built by the homeowner who is also a contractor, Beacon Hill Cedar Cottage includes the amenities and feel of a larger home. Its efficient footprint provides two bedrooms, well-daylit spaces, lots of storage, and a covered outdoor living area.

Bathed in sunlight, a generous central area includes the kitchen, dining, and living spaces. Carefully placed large windows and glass entry doors flood the area with light that bounces off the white walls to make it feel larger than its square footage. The open glass doors and deep eaves create a vibrant indoor/outdoor living experience.

The durable Japanese cypress exterior is treated using the traditional Shou Sugi Ban technique, ensuring both beauty and natural resilience.

With two bedrooms, and maximized storage throughout, there is plenty of room to keep things close at hand to pursue hobbies and work from home.

Square Feet: 707 + 147 SF patio

Photos: Peter Bohler Photography + Director
Shou Sugi Ban exterior: Nakamoto Forestry
Windows: Marvin  

See More: Beacon Hill Cedar Cottage

WA State legislature passes SB 5491 single-stair bill

As we struggle with the construction cost of housing across the state and look to make building middle housing more affordable and abundant, the building code can sometimes add unnecessary complexity without adding any benefit to life safety. 

In Seattle for the last fifty years or so, we’ve had a provision for small multifamily buildings that can eliminate one of the two typical stairs under very strict, prescriptive conditions: four units per floor, sprinklered buildings, fire-resistance-rated construction, quick access to a protected exit or to the street.  These aren’t high rises or big apartment blocks.

Small apartment buildings should be the building block for middle housing and the single-stair provision makes many more sites feasible and gives architects more flexibility to design great buildings.  

We have designed four of these small apartment buildings, varying from four to ten units.  The sites are small urban infill, and a second stair would have probably killed the projects.  On many infill sites, having a second stairwell means fewer windows for residents, fewer units, less ventilation, more blank exterior walls, and ultimately higher rent for residents because the buildings are much less efficient.  

Senate Bill 5491 legalizes single-stair apartment buildings up to six stories. It will require the State Building Code Council (SBCC) to develop recommendations for these buildings and adopt the changes by July 2026. 

The SBCC must convene a technical advisory group to recommend modifications and limitations to the International Building Code (IBC) that would allow for a single exit stairway to serve multifamily residential structures up to six stories.

The recommendations must include:
• considerations for adequate and available water supply
• the presence and response time of the fire department
• any other provisions necessary to ensure public health, safety, and general welfare

Six-to-twelve-plexes offer a superior urban experience, more housing units, more housing variety, and at least some fully accessible housing units. They also may preserve more tree canopy, increase open space, and optimize daylight compared to townhomes. These homes will push the bounds of the single-family envelope but maintain an urbanism-friendly street frontage.

As one of the region's leading voices for abundant and affordable housing choices, we advocate for smart density and missing middle housing. More efficient land use is critical to address our housing crisis, climate change, and persistent inequities in access to housing opportunities.

An array of CAST’s detached accessory dwelling units (DADUs)

Statewide efforts to boost housing options make headway

This past legislative session, several bills made it through both houses and each will have long term benefits for the production of urban infill housing types such as cottages, ADUs, and small stacked apartment buildings.

HB 1337

The passing of HB 1337 expands housing options by easing barriers to the construction and use of ADUs.

·        legalizes two ADUs per lot in any configuration of attached/detached

·        legalizes an ADU on any lot size that’s legal for a house

·        legalizes ADU size up to at least 1,000 SF 

·        legalizes ADU height up to 24 feet

·        ends requirement for owner to live on site

·        caps impact fees at 50% of those charged on houses

·        lifts parking mandates within 1/2-mile or 15 minutes from transit stop

·        prohibits design standards or other restrictions more stringent than what applies to the main house 

·        legalizes ADUs to abutting property lines on alleys

·        legalizes ADUs in existing structures that violate current rules for setbacks or lot coverage

·        prohibits requirements for public right of way improvements

·        legalizes the sale of ADUs as condominiums

HB 1110

The Middle Housing Bill will mandate that medium and large cities create development standards for their lowest density zones to accommodate more housing.  For Seattle, it means:

·        Up to 4 units on any parcel not previously limited by an HOA or PUD.

·        Up to 6 units on parcels that are within ½ mile (a 10 minute walk) of frequent or fixed transit

·        Up to 6 units on any parcel if 2 are designated as affordable. 

The form that these new housing types will be open ended, but the Department of Commerce is busy developing a model code for cities to use as a starting point.  The deadline for cities to comply is 6 months after their next comprehensive plan cycle (for Seattle that is mid 2025). 

Spokane Four

As one of the region's leading voices for abundant and affordable housing choices, we have been advocating for backyard cottages—accessory dwelling units (ADUs)—since Seattle first considered them citywide in 2009.

More efficient land use is critical to address our housing crisis, climate change, and persistent inequities in access to housing opportunities. Modest infill houses like ADUs are a key strategy to empower citizens to provide new housing, build generational wealth, and leverage taxpayers’ investment in infrastructure, transit, schools, and parks. 

A “People Place” by Design
The Mazama Public House was conceived with community in mind.

“The long communal tables were always indicative of the way we were thinking about the place. You come in and you’re part of the community. You share a table and suddenly you’re in conversation with a person you’ve never met before. It’s a fun opportunity.”
-- Stefan Hampden, CAST architecture

See the full article here on Issue.

This pub is the new gathering spot for the community of Mazama, at the north end of Washington’s Methow Valley.  The 1,868 square foot public house is designed to seat 56 and another 50 outside with built-in benches on the four-season covered patio. In warm weather, a garage door system opens for a seamless connection to the outdoor decks. The height of the shed roof and the expansive windows on two sides are sited to take advantage of natural light and views toward Goat Peak. The interior features wood beams punctuated by blackened steel and concrete floors. Custom tables and bar slabs were crafted from locally sourced Douglas-fir. Outside, blackened steel will accent the wood structure. The siding is a dark-stained, rough-sawn vertical channel shiplap.

Green design features the use of highly durable siding materials including a mix of locally harvested wood from the Methow Valley and Boise Cascade products. The generous overhangs were designed to protect the siding from wear and tear. Full LED lighting was installed.

📸@benjdrummond
📸@mitchellimage

@mazamapub
Architect: CAST architecture
Owner: Grumpy Goats, LLC
Operator: Old Schoolhouse Brewery @oldschoolhousebrewery
Contractor: Bjornsen Construction, Tom Bjornsen                                    
Structural: Harriott Valentine Engineers @harriottvalentine
Lighting: LightWire @ltwire
Windows & doors: @sierrapacificwindows  

Edelweiss House in the Methow Valley

This home, on two acres, near Mazama in the Methow Valley, was sited to take maximum advantage of a south-facing orientation. Its horseshoe shape creates a courtyard between the wings of the home which is cooler in the summer and cozy with a fire pit in the winter. The home’s design highlights the indoor/outdoor relationship that characterizes Methow Valley life.

The twelve-foot-high bank of windows and NanaWall in the great room face southwest and provide transparency through the home, while framing valley and mountain views. The interior wood ceiling extends out through the overhang above the veranda, further drawing the eye out and bringing in the outdoors. The roof height was intentional, to protect from the summer heat, and allow winter sun in to warm up the space.

A centerline from the kitchen to the fireplace wall is a nod to formality. The chandelier anchors the space from either side patios and the kitchen/living room axis. The open kitchen, clad in local Douglas fir, was designed for those social interactions that happen best around food.

The primary bedroom wing includes one bedroom, bathroom, walk-in closet with laundry room and doggie bed, and connection to the outdoor dog run. Obscure glass and a built-in Douglas fir headboard create the shared wall with the bathroom, bringing in extra light to the spaces.

On the opposite side, the utility wing starts just off the kitchen with a pantry and food prep area. A multipurpose room includes space for a guest bedroom with Murphy bed and built-in cabinetry, an office, and a game area. The area can be separated by a pocketed curtain.

Photos: Andrew Giammarco

See Portrait Magazine’s feature on Edelweiss House here.

TEAM
Bjornsen Construction‎
Evans Concrete Construction
B&B Excavating
A & J Electric
NanaWall Systems
Harriott Valentine Engineers
Johnsen Steel Works
Sierra Pacific Windows

The Methow Valley’s Riverside Winthrop Mixed-use project – On the Boards

“This is an amazing gift to the community. I hope everyone will look for ways to make sure it happens.”     
 -- public meeting attendee

This mixed-use project, at the east side of Winthrop in Washington’s Methow Valley, is positioned to become the upvalley entrance to “old downtown.” The site is a challenging set of narrow parcels overlooking the confluence of the Methow and Chewuch Rivers. The private development is driven by long-time Winthrop residents Peter Goldman and Martha Konsgaard and prioritizes doing right by the community on several fronts.  

Given the housing crisis affecting the area, CAST is working with the town on zoning changes to allow for long-term residential rentals, and to integrate workforce housing into the project's program. At both a pedestrian as well as a vehicular gateway to the city, we are linking the town’s boardwalk to the Susie Stephens trail and the town's civic center on the south side of the river. We are working with the community to create an entry point to a public riverwalk trail system. Additionally, the project is envisioned as a template for how buildings can work within Winthrop's westernization code while striving for very high levels of sustainability and designing to passive house standards for the residential and office suites. 

Riverside’s program will provide one 1-bedroom and two 2-bedroom residential units overlooking the river, with approximately 2,600 SF of pedestrian-level retail space which spills out into a public courtyard strengthening views and access to the river from town. The second floor incorporates 2,650 SF of office space, continuing the client’s tradition of renting below market rate to community non-profit businesses.

Team
Client: Peter Goldman and Martha Kongsgaard
Architect: CAST architecture
Builder: North Star Construction Company  www.Northstarbuilds.Com
Civil & Structural: DCG   www.dcgengr.com   
Electrical: TFWB   tf-wb.com
Environmental:  Grette  www.gretteassociates.com  
Geotech: Geoengineers  www.geoengineers.com/ 
Mechanical: Ecotope   www.ecotope.com 
Survey: Tackman   www.tackmansurveying.com

A small building can have a big impact: this design has a commercial suite, a live work unit, two subsidized one bedroom apartments and two 2 bedroom apartments (with bonus lofts).

seattle architect has more missing middle housing on the boards

The housing crisis in California is so difficult in part because jurisdictions have opposed or slowly walked new housing through a mix of bad zoning and bureaucratic barriers. In response, the state has invoked a provision called the ‘builder’s remedy’ where towns and cities that have failed to show how they can meet their housing targets lose their ability to enforce their own zoning rules, provided that projects include some percentage of affordable housing.

The design is pushed to the street, preserving more backyard for residents and mature trees. The commercial space can be thought of as a cafe, retail or daycare.

As part of this zoning holiday we’ve designed this speculative small infill project. It has a commercial suite, a live work unit, two affordable one bedroom apartments and two 2 bedroom apartments with lofts.

Diagram of five unit apartment building.

This project is geared for using the Passive House green building standard to achieve very low operating expenses, and high indoor air quality. It is packed with amenities such as large porches and bike storage. If you are a developer interested in infill development or a property owner looking to make the most of this window of opportunity, please contact us at Matt@CASTarchitecture.com.

The straightforward roof design of this home is designed for its rugged environment in Washington’s Methow Valley. We kept it simple and avoided complex shapes—a roof that holds snow reduces the chance of slough off and provides an energy-saving bonus.

Deep eaves and generous covered walkways and entries help keep outdoor circulation free of ice, reduce shoveling, and simplify living.

Roof Design in snow country

Plan a simple, generous roof that will hold snow and cover outdoor walkways, entries, and deck areas.

-  A blanket of snow on the roof provides a free, insulating, energy-saving bonus.

-  A roof that holds snow reduces the chance of avalanche, creep, or slough off and minimizes chance of injury or damage to the structure.

-  Plan for the roof to cover four-season outdoor living areas.

-  Keep the roof simple—avoid complex shapes, valleys, and roof-to-wall intersections.

-  Avoid gutters as meltwater can create ice dams at eaves and accumulate in gutters resulting in maintenance issues.

-  Avoid skylights, and roof penetrations when possible. Roof vents, chimneys. and plumbing vents should account for snowpack.

Photos: Built Work Photography

Seattle Architect pursues passive house certification with missing-middle housing on Lake Union

Echo on Eastlake apartments is pursuing Passive House certification, with early design and feasibility studies complete on the new 10-unit apartment building in Seattle’s Lake Union neighborhood.

This building will replace an existing single-family structure in this residential urban village, adding missing-middle housing. It utilizes the stacked flats concept which pushes the bounds of the single-family envelope but maintains an urbanism-friendly street frontage. There is one central stair and no shared walls. And, the two homes on the ground floor are both fully accessible.

Six-to-twelve-plexes offer a superior urban experience, more housing units, more housing variety, and at least some fully accessible housing units. They also may preserve more tree canopy, increase open space, and optimize daylight compared to townhomes.

More to come in the months ahead.

TEAM
Developer: West Crescent Advisors, LLC
Owner’s Representative: Woodworth Construction Management LLC @woodworth_built
Architect: CAST architecture
Builder: Carrig Construction
Civil Engineer: Davido Consulting Group
Landscape Architect: Karen Keist Landscape Architects
Arborist:  Moss Studio
Geotechnical Engineer: Pangeo, Inc.
Surveyor: Terrane
Structural Engineer: Harriott Valentine Engineers
Envelope Consultant: B.E.E Consulting

Seattle architect hiring

Current Opportunities:
Design Associate with 2+ years of experience
AND
Project Architect/Manager with 5+ years of experience

CAST Architecture is a Seattle-based firm with extensive experience designing contemporary spaces throughout the Northwest. Specializing in modern and sustainable projects, the firm is committed to improving the lives of individuals, families, and the community through vibrant and thoughtful design. We are inspired by collaboration, intend on crafting timeless, high-performance buildings, and are committed to positive social outcomes.

Our studio environment is friendly and low-key. We enjoy working collaboratively and actively foster a team approach in all of our endeavors. We pride ourselves in promoting a healthy work/life balance and passions and interests outside the office. While we’d love to have everyone in the office working together, we support flexible remote-work scheduling.  

DESIGN ASSOCIATE

Job Description
The candidate will work under the leadership of a licensed architect/project manager and will assist with all aspects of the design and production of residential, commercial, and public architectural works. Additional duties will include general administrative tasks and assisting with the production of marketing materials as needed.

Experience with documentation and delivery is a big plus. We’re always working on several tenant improvements, early learning centers, and custom residential work that require collaboration, creativity, and attention to detail.

Qualifications

• First and foremost you are an exceptional designer who excels working in a collaborative and creative environment

• A ‘can do’ work attitude on all tasks from the mundane to the extraordinary

• Solid verbal, written, and graphic communication skills

• A well-rounded understanding of the technical aspects of architectural design including materials use, construction techniques, and construction details

• A Bachelor’s or Master’s degree in architecture or interior design from an accredited university is required

Technical skills

• Proficient with architectural BIM software, preferably ArchiCAD (Note – we do not use Revit/AutoCAD). We will train if you don’t have ArchiCAD experience but are ready to learn.

• Familiar with Affinity/Adobe design products, Bluebeam, and Microsoft Office.

• Capable of producing high-quality renderings with Lumion is a plus but not required.

Benefits

• Flexible schedule, remote work

• Competitive compensation

• 401K+3% employer match

• Health, dental, and vision insurance

• Overtime pay

• Annual bonus

• Support for professional development and certifications

Submit a cover letter, resume, and samples of design work digitally to employment@castarchitecture.com. We will review and contact applicants on a rolling basis in January.

PROJECT ARCHITECT/MANAGER

Job Description
The immediate need is to work on a range of housing projects, including affordable multifamily, market-rate infill, custom houses, and institutional projects.  Our projects are staffed with small fluid teams, usually with a principal, project architect and one or more design associates. After a collaborative schematic design, the project architect leads design development, consultant coordination, construction documents, permitting, and construction administration, while managing additional staff as necessary to complete the project.

Qualifications

• First and foremost you are an exceptional designer who excels working in a collaborative and creative environment

• A ‘can do’ cooperative attitude

• Highly organized project management

• Solid verbal, written, and graphic communication skills

• A well-rounded understanding of the technical aspects of materials, methods, energy use, and construction details

• 5+ years experience

• A Bachelor's or Master's degree in architecture from an accredited university is required

Technical skills

• Proficient with architectural drafting software, preferably ArchiCAD (Note – we do not use AutoCAD).  We will train if you don’t have ArchiCAD experience but are ready to learn. 

• Proficient with Bluebeam, and Microsoft Office suite. 

• Capable of producing high-quality renderings with Lumion would be a huge plus but not required

• Certification in Passive House or LEED, energy modeling, and experience with sustainable construction systems and methods.

Benefits

• Flexible schedule, remote work

• Competitive compensation

• 401K+3% employer match

• Health, dental, and vision insurance

• Overtime pay

• Annual bonus

• Support for professional development and certifications

Submit a cover letter, resume, and samples of design work digitally to employment@castarchitecture.com. We will review and contact applicants on a rolling basis in January.

No phone calls or hand-delivered applications, please.