Ganahl Lumber Company - Lake Forest

Diamond Rating

To earn the Showroom Diamond, the dealer must have a showroom with a minimum number of Milgard products on display.
To earn the Web-Site Diamond, the dealer must have their own Web-site with information about the Milgard products and the services they sell.
To earn the AAMA Certified Diamond, the dealers must have at least one member from each of their installation crews complete the AAMA Installation Masters training and pass the AAMA Certified Install test.
To earn the Product Knowledge Diamond, all Dealer Sales Consultants must pass a series of standardized Milgard administered tests demonstrating Milgard product knowledge.





23132 Orange Avenue
Lake Forest, CA 92630
United States

Store Hours

Monday 6:00am - 6:00pm
Tuesday 6:00am - 6:00pm
Wednesday 6:00am - 6:00pm
Thursday 6:00am - 6:00pm
Friday 6:30am - 6:00pm
Saturday 6:00am - 6:00pm
Sunday Closed

Services Offered

Essence Dealer
Has Showroom
MGWS Dealer
New construction
Offers installation

About Us


We're not the best because we're over 100 years old, we're over 100 years old because we're the best! We are family and employee owned. We strive to do the ordinary things... extraordinarily well!

Areas Served

Pasadena, Anaheim, Capistrano Beach, Los Alamitos, Buena Park, Laguna Beach, Costa Mesa, Corona and Lake Forest.


Ganahl Lumber Company - Lake Forest

See All Reviews
Ganahl Lumber Company - Lake Forest is rated 5.0 out of 5 by 5.
Rated 5 out of 5 by from Helpful Guidance I went into Ganahl Lumber in Lake Forest to talk about replacing my Windows and Doors. I was given patient advice regarding styles and options. It was nice not having to deal with a High Pressure salesman like the ones who had come to my house. I was even given referrals for local contractor's to do my installation. Thank You Annette.
Date published: 2019-03-14
Rated 5 out of 5 by from Lots of quality building products to select from All my building product needs are met at Ganahl Lake Forest love to shop at this store
Date published: 2019-03-12
Rated 5 out of 5 by from Professional Help and Great Service Recently bought Milgard windows for a job in Oceanside. Annette in always helpful in explaining the product features and options, and following up on status. I like the painted option to match existing wood windows.
Date published: 2019-03-10
Rated 5 out of 5 by from Excellent customer service Very happy with the product, warranty and customer service
Date published: 2019-03-09
Rated 5 out of 5 by from Fun place to shop and people are great !!! wow this was the best, great people and great service ....
Date published: 2013-11-25
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