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Business Details
We are Alexander, a familyowned business that has been providing premium replacement windows and doors on the San Francisco Peninsula since 1971. Our team of certified installers works entirely inhouse with no subcontractors, ensuring every project meets our strict quality standards. We have installed highquality windows, doors, and skylights for thousands of homeowners across the Bay Area, building a reputation for reliability and craftsmanship. Our awardwinning showroom in Burlingame displays top brands such as Marvin, Milgard, Simonton, Andersen, and ThermaTru, allowing customers to see and select products with expert guidance. We offer a free, noobligation inhome consultation and a guaranteed satisfaction commitment for every job, large or small. With over 50 years of experience, we solve complex design and installation challenges, delivering longterm value and energy efficiency to our clients.

Our BBB A+ accredited status and Diamond Certified dealer designation reflect our dedication to professional standards and transparency. We prioritize customertrusted service, backed by hundreds of positive reviews from San Mateo County homeowners. Our experienced staff handles design, permitting, and installation as a single, coordinated team, simplifying the process for our clients. We continuously invest in training and technology to stay at the forefront of industry innovations and product performance. Our commitment is to exceed expectations, ensuring each customer receives a stressfree upgrade that enhances their homes comfort and value.
Highlights and features
  • We bring 50+ years of window and door expertise.
  • Our inhouse team ensures no subcontractors and consistent quality.
  • We guarantee satisfaction through a free inhome consultation.
  • We are BBB A+ accredited with Diamond Certified dealer status.
  • Our showroom displays top brands for handson product selection.
Services
Replacement Windows
We install highperformance replacement windows using premium brands such as Marvin, Milgard, and Simonton, tailored for homeowners seeking energy efficiency and aesthetic upgrades. Our certified installers handle design, permitting, and precise fitting, ensuring a seamless, leakfree installation. The result is lower utility bills, increased home value, and yearround comfort for the client.
Patio Doors
We provide custom patio door installations that blend indoor and outdoor living spaces for families who enjoy entertaining. Our inhouse team uses durable materials and precise hardware to guarantee smooth operation and weather resistance. Clients experience expanded entertaining areas, enhanced curb appeal, and longlasting performance.
Entry Doors
We install secure entry doors that combine style with robust construction for homeowners prioritizing safety and curb appeal. Our certified installers ensure precise alignment, reliable locking mechanisms, and a seamless aesthetic finish. The benefit is increased security, improved first impressions, and lasting durability for the property.
Skylights
We install custom skylights that flood interiors with natural light, enhancing comfort for residential spaces. Our specialists select energyefficient glazing and integrate flawless sealing to prevent leaks and heat loss. Homeowners gain brighter interiors, reduced heating costs, and a modern aesthetic upgrade.
Front Door
We fit premium front doors that provide striking curb appeal with highquality hardware and custom finishes, and reliable security for residential properties. Our experienced installers ensure precise alignment, sturdy hardware, and a seamless finish for lasting performance. Clients enjoy enhanced safety, improved aesthetics, and increased property value over time.
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