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(517) 371-5858



810 E Mount Hope Ave, Lansing, MI 48910

Closed Now

Regular Hours

Mon - Fri

7:30 am - 4:30 pm

Extra Phones

Fax Number: (517) 371-2053

TollFree: (800) 456-5859

General Info

Olsen/Mastermark Company deals primarily in window & door sales, heat formed PVC board and CNC routing/laser engraving and laminate counter top supplies. Some smaller but still important facets of our company involve sales of Blum hardware, Fastcap tools and window and door parts. While we no longer supply parts for or service existing windows and doors, we currently have a large collection of window and door parts in stock.

Payment Methods

Visa, Mastercard, All Major Credit Cards, Check, Debit


Our building runs along the rail road tracks between South Cedar Street and South Pennsylvania Avenue, near South Lyons Avenue


Windows & Doors, Laminate Counter-top Supplies, Custom PVC Trim Board Heat Forming, CNC Routing and CNC Laser Cutting/Etching

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  • user avatar
    Rhonda N.

    I am very satisfied with my experience with Olsen Mastermark and definitely am pleased with the new windows. The product was better than another local competitor, and so was the cost! I had 8 windows replaced and am looking forward to a much warmer winter with lower heating bills. The installer, Jim, was on time and stayed late to ensure everything was done to my satisfaction. Jim was professional, worked quickly and cleaned up immaculately. When he left, there were no nails, scraps, metal or anything left behind to clean up
    The salesperson, Tracy, was very informative and educated me about the different options available that best fit my needs and budget. He was honest and demonstrated excellent work ethic.The account manager, customer service, as well as the installer were all very professional, polite and helpful. I would go with Olsen Mastermark again if I needed other work for my home. Would definitely recommend to others looking to replace windows!

  • user avatar
    Anthony N.

    Do not do business with this company. The owner has a rotten attitude and offers terrible customer service.

  • Hard to communicate with

    I had at least 6 unreturned emails and 3 phone calls. Questions and directions were often ignored.

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