Compare the highest-rated windows professionals in Mercer Island, Washington. All contractors are licensed, insured, and verified through our rigorous screening process.
A highly-rated, locally-focused provider known for its extensive selection of window brands and styles. They specialize in full-frame replacement and insert windows, with a strong emphasis on energy efficiency and professional installation. Their consultants are praised for being knowledgeable and non-pushy.
As a branch of the national premium brand, this local company offers a full-service experience from consultation to installation. They are renowned for their high-quality, custom-made, and durable Fibrex® composite windows. They are a top choice for homeowners seeking a seamless process and long-term, low-maintenance solutions.
A leading provider of the premium Pella brand, this local dealer offers exceptional product quality and innovation. They provide a wide array of windows, including specialty shapes, hurricane-rated options, and smart home-integrated glass. Their strength lies in combining a top-tier product with certified local installation expertise.
The window service market for Mercer Island is a high-tier, competitive landscape dominated by established, premium providers. Due to the island's demographic of discerning homeowners with high-value properties, the average quality of service and products is exceptionally high. The competition is not on price but on reputation, product quality, customization capabilities, and superior customer service. Energy efficiency is a paramount concern, driven by both environmental consciousness and the desire to reduce utility costs. Typical pricing reflects this premium market; homeowners should expect significant investment for full-home window replacement, often ranging from $20,000 to $60,000+ depending on the home size, window quality (e.g., triple-pane gas fills, low-E coatings), and complexity of installation. Most leading contractors are based in Bellevue, Seattle, or surrounding suburbs but consistently serve the Mercer Island community.
4.7+ star average from verified customer reviews
All contractors are properly licensed and insured
10+ years average experience in the industry
Familiar with Mercer Island regulations and climate
Get answers to common questions about windows services in Mercer Island, Washington.
For a standard-sized home on Mercer Island, a full window replacement typically ranges from $15,000 to $40,000+, depending on the number of windows, materials (vinyl, fiberglass, or wood), and glass options. Prices are often higher here than regional averages due to the prevalence of custom-sized windows in older homes, the demand for high-performance units to handle our wet, windy climate, and the general cost of living. Investing in quality, energy-efficient windows with low-E coatings and argon gas is crucial for long-term savings on heating bills, especially during our cool, damp winters.
Yes, Mercer Island requires a building permit for any window replacement that involves altering the structural framing of the opening. The City's Community Planning and Development department enforces the Washington State Energy Code, which mandates specific U-factor and Solar Heat Gain Coefficient (SHGC) ratings for windows to ensure energy efficiency. Furthermore, if your home is in a designated historic area or has covenants, there may be additional design review requirements to maintain architectural consistency, so checking with the city and your HOA is an essential first step.
Late spring through early fall (May to September) is generally ideal, as the weather is drier and more predictable, allowing for safe installation and proper sealing of materials. While professional installers work year-round, scheduling during our wet, rainy season (October-April) can lead to project delays and requires extra precautions to protect your home's interior from moisture. Planning and booking several months in advance is highly recommended, as reputable local companies often have long lead times, especially for custom orders.
Prioritize contractors who are locally licensed, bonded, and insured in Washington State, and who have extensive experience with Mercer Island's specific architectural styles and permit process. Seek out providers with strong references from island residents and look for certifications from manufacturers like Andersen or Pella, which indicate trained installation crews. Always verify their standing with the Washington State Department of Labor & Industries and request a detailed, written contract that includes cleanup, warranty information, and a timeline.
To withstand Puget Sound's strong wind-driven rain, look for windows with a high Design Pressure (DP) rating, indicating superior structural strength and air/water infiltration resistance. Features like durable exterior cladding (e.g., aluminum or fiberglass), robust weatherstripping, and proper flashing techniques are non-negotiable for a watertight seal. For energy efficiency against our mild but damp cold, specify double or triple-pane glass with low-E coatings and argon gas fill to minimize heat loss and reduce condensation.