Star Construction WA builds custom sunrooms, sunroom additions and glass enclosures for homes and businesses across the Puget Sound. Whether you want an open porch closed in before the next wet season, a glass sunroom installed over an existing deck, or new glass railings to finish the space, our own crews handle the design, the permits and the installation from first measurement to final walkthrough.
Residential and commercial installations across Seattle, Bellevue, Mercer Island, Everett, Renton and surrounding King County.
Star Construction WA designs and installs custom sunrooms and Lumon balcony enclosures for homeowners, condo boards, restaurants and hotels across the Seattle area. Our work uses Lumon’s frameless retractable glass system, the same technology you’ll find on thousands of balconies across Canada and Northern Europe, engineered to handle the wet Pacific Northwest climate without trapping moisture.
For residential customers, that usually means closing in a deck so you can use it through the rainy months without losing the view, or turning a covered patio into a three-season room that stays usable well past summer. For commercial customers — restaurants extending outdoor seating, multi-family buildings retrofitting balconies, hospitality properties protecting guest spaces — the same system gives you weather protection and noise reduction without the visual weight of traditional aluminum framing.
We’re a Seattle-based licensed contractor (Washington L&I bonded, insured), we handle permits, and we do free in-home or on-site consultations from Bellevue to Mill Creek. Most projects are quoted in under a week.
A short walkthrough of how the frameless panels open, stack and close, and what a finished sunroom or glazed balcony looks like once our crew is done.
We install the Lumon frameless retractable glass system as an authorized dealer for the Seattle metro — factory-measured panels, factory warranty, local installation crew.
Bring warmth and light into your home with a cozy sunroom designed for relaxing, entertaining, and enjoying natural light — even on gray days. With thoughtful design and quality materials, it becomes a seamless extension of your living space.
Lumon’s frameless retractable glass turns a deck or patio into a comfortable space you can use most of the year. Slide the panels fully open in summer for an open-air feel, close them in fall and spring to keep rain and wind out. Single-pane tempered safety glass, with intentional 2 to 3 mm ventilation gaps between panels so the space doesn’t trap moisture.
Request A Free QuoteThese are designed as three-season rooms, but Seattle winters are mild enough that most of our customers keep using the space well into the cold months. A small patio heater or electric fireplace handles the coldest weeks. Lumon themselves suggest an infrared heater or a thermal rug if you want to push it further. Don’t expect indoor temperatures in January without a heat source, but you’ll get a lot more usable months than a screened porch gives you.
Request A Free QuoteMost of our residential work falls into one of three shapes. A deck enclosure where the homeowner wants to keep the view but stop losing the space for six months of the year. A full sunroom addition off the back of a house, often replacing a screened porch. Or a condo balcony glazed in with Lumon’s retractable panels so the unit gains usable square footage that doesn’t count against most HOA setback rules (we’ll check yours).
The build is straightforward but the design decisions aren’t, and that’s where we spend most of the first consultation. You’ll want different glazing for a south-facing Mercer Island lot than for a north-facing Ballard one. A Bellevue project with a hot tub needs different ventilation than a Renton three-season room. We sit down with you, look at the orientation, and pick the panel configuration that matches how you actually plan to use the room.
Commercial projects are where the Lumon system really earns its keep. Restaurants in Capitol Hill and Belltown have used it to keep outdoor seating profitable nine months longer per year. Hotels in Bellevue have retrofitted whole guest-room balcony stacks in a single off-season. Multi-family buildings around Renton and Lynnwood use it to upgrade existing balconies without disrupting tenants, because the panels install from inside the rail.
We handle the permit work, the L&I paperwork, and we coordinate with your property manager or general contractor. Most commercial installs we’ve done in the last two years have been phased — a few units at a time, on a schedule the building can actually live with.
Lumon is a Finnish company that’s been making retractable balcony glass since 1978 — over 45 years of refining the same system. They have more than one million installations worldwide, with a strong presence across Canada and Northern Europe in climates as wet or wetter than Seattle. That matters because Pacific Northwest moisture is the single biggest reason cheaper enclosure systems fail. The trapped condensation rots out the framing within a decade. The Lumon panels are frameless on three sides and slide open in seconds, so the space ventilates the way a screened porch does, but with full weather protection when closed.
No vague estimates and no surprises halfway through. Here is exactly how a Star Construction WA project runs, from the first visit to the warranty paperwork.
We come to your home, restaurant, or building. Usually 45 minutes. We measure the opening, talk through how you actually use the space, and check for anything weird with the structure or the HOA rules.
Itemized — panels, framing, labor, permits, electrical if needed. No verbal estimates that change later.
We handle the City of Seattle and surrounding municipality submissions. For condos we put together the package for your board.
Lumon panels are made to the exact measurements of your opening, so production is usually 4 to 6 weeks.
Most residential balconies are one day. Sunrooms run 3 to 5 days. Commercial phased installs are scheduled around your operating hours.
You get the Lumon factory warranty plus our workmanship warranty. We register both at the end of the job.
We install sunrooms and Lumon balcony glazing throughout King and Snohomish counties. Click any of the cities below to see local project examples, or call (206) 600-2225 for areas not listed.
Outside the city? We also install sunrooms and Lumon balcony glazing in Issaquah and Sammamish.
Decks, patios, porches and condo balconies we have enclosed for homeowners across the Seattle metro.
Restaurant patios, hotel balconies and multi-family retrofits delivered on a schedule the building could live with.
Rated Excellent based on 50 verified Google reviews from homeowners and businesses across the Puget Sound region.
Most residential balcony jobs in our service area land between $12,000 and $28,000, depending on the linear footage of glass, how the corners are handled, and whether we’re touching the existing railing. Sunroom additions are a different scope and usually start around $45,000. We give you a written, itemized quote — no “starting at” pricing.
In Seattle and Bellevue, yes for any sunroom addition. Most balcony enclosures on existing decks don’t need a permit because we’re not changing the structure, but we always check with the local jurisdiction before quoting. For condos, you’ll need HOA approval first; we’ll help with the submission package.
Usually yes, but how it shows up on an appraisal depends on whether the space counts as conditioned square footage. A Lumon enclosure typically adds value as an amenity rather than appraisable living space, because the panels are single-pane and the system is intentionally ventilated. If you specifically need appraisable square footage added to the house, that’s a different kind of build — bring it up at the consultation and we’ll walk you through the options.
The system is engineered for wet climates — Finland, Norway, coastal Canada. Water drains out through gaps at the bottom of each panel, condensation ventilates naturally, and the panels themselves are tempered safety glass. We’ve had installs out for 8+ years in Bellingham and Tacoma with no moisture issues.
Yes — restaurant patios are one of our most common commercial jobs. We handle the King County health department coordination if you’re enclosing space where food is served, and we can integrate heating, ventilation, and emergency egress requirements into the design.
A single residential balcony usually takes one day on-site once the panels are manufactured. A full sunroom is typically 3 to 5 working days. Commercial phased installs are scheduled to your operating hours — restaurants we usually work overnight or during the slow season.
Lumon’s factory warranty covers materials for 5 years, with guaranteed spare-part availability for 10 years and functional and safety components available for 20. Our workmanship warranty covers the installation labor for 2 years. Both warranties are registered at the end of the install and the paperwork is yours.
Our regular service area is King and Snohomish counties — Seattle, Bellevue, Mercer Island, Renton, Kirkland, Redmond, Bothell, Lynnwood, Everett, Mill Creek and the surrounding cities. For projects in Tacoma, Bellingham or Olympia we’ll come out, but expect a small travel charge in the quote.
If you are looking for a skilled team of motorized louvered pergola and deck professionals then look no further than Star Construction WA.
Monday – Saturday, 7am – 7pm · Serving King, Snohomish And Pierce Counties
