
About Us
When “good enough“ isn’t good enough for you…
ConSpec Building Systems - we are a small general contracting firm in business since 1991. Specializing in kitchen & bath remodeling, room additions, whole house remodeling & green upgrades. Fully supervised crew with all licenses, insurance and bonding. On site every day from commencement to completion. If you want quality work done safely and efficiently - call us FIRST.
Wood beam restoration a specialty for those with Craftsman-style homes. Don't replace those rotten beams - RESTORE them.
Ask us about our NAHB Green Certification and our Certified Graduate Remodeler designations... Let us tell you why we're the contractor OTHER contractors recommend.
We are EPA Certified Lead Safe remodelers.
History
Established in 1991
Local for 3 generations and proud to Angelenos!
Free design consultation or in-home energy audit and preliminary estimate.
Services Provided
Bathroom Remodeling, Custom Homes, Energy-Efficient Homes, General Contracting, Green Building, Home Additions, Home Extensions, Home Remodeling, Kitchen Remodeling, Pool House Design & Construction, Project Management, Radiant Floor Heating, Sliding Door Installation, Trim Work, Window Installation, Window Replacement, Wine Cellar Installation
Areas Served
Bel Air, Beverly Hills, Brentwood Los Angeles, Encino, Sherman Oaks, Studio City, Universal City, Valley Village, West Hollywood, West Los Angeles
Awards
National Association of Home Builders Certified Graduate Remodeler (CGR).National Association of Home Builders Certified Green Professional (CGP). EPA Lead Safe Contractor
Credentials
3 Houzz Awards
3 Houzz Badges
Write a Review









9 Reviews for ConSpec Building Systems

Rachel Winokur Interiors
Relationship
Colleague
I worked as the Interior Designer with Roger on an episode of House Crashers. What makes Roger so valuable is his availability and responsiveness to come up with a workable construction plan. Also, he solved many problems that came up during construction in a quick and effective manner. Plus, his calm demeanor in such a time sensitive and intense situation, is refreshing. The room which he and his team renovated in just 3 days was a casual cottage sunroom. He also worked on some of the exterior. The homeowners were thrilled with the renovation and were excited to use that room after treating it as mostly a storage room up until that moment. I highly recommend Roger!
December 30, 2015

Comment from ConSpec Building Systems:
Thanks Rachel! It was great working with you and I look forward to collaborating on another project...

fhuntsberry
Relationship
Client
I hired Conspec Building Systems to undertake a major renovation of my house. Roger is personally involved with every construction project and takes the time to listen to the client's needs. Conspec works with a large list of highly qualified subcontractors who do incredible work. I cannot say enough good things about my experience.
August 28, 2015

Lynn Doran
Relationship
Client
Conspec Building Systems did an excellent job remodeling my house. Every detail was thought out and executed perfectly. My vision and their execution made this a perfect match.
I have a high taste level and expect quality work. Conspec did it!!! Thank you!!!
August 10, 2015

hdpresident
Relationship
Client
Conspec remodeled our vintage 1931 large sorority house bathroom. The design improved traffic & opened up the room. The crew worked all summer without a major disruption to the girls still living there. The quality of their work is outstanding, with every detail carefully tended. The project was completed on time and within budget. This was the third bathroom project they've done for us, & we're starting the planning process for #4. Love working with these guys!
September 28, 2014Last modified:December 13, 2015

ampants
Relationship
Client
I recently hired ConSpec Building Systems to patch and paint an entire house as well as replace all gutters with copper gutters. (And a few other random updates that were needed). From our very first meeting to the last day of the job, Roger was punctual, thorough, communicative, professional and all around an absolute dream to work with. He followed through on his word from the quote he gave to the timeline he predicted right down to every tiny detail that was part of the job. He and his crew went above and beyond to make this monster of a job and completely hassle-free experience. I trust Roger implicitly and highly recommend him to anyone who wants any sort of renovation to be a pleasant experience.
July 26, 2013

emilyap
Relationship
Client
I used Conspec Building Systems for an overhaul of four bathrooms (stripping to studs in a 1930 house). Roger Krost, owner, and Chris Moyer, foreman on the project, were excellent collaborators and finished on our target date. We also stayed within 5-7% of our target budget. Part of the reason we accomplished those goals (staying on time and budget) was that Roger, Chris, and I stayed in close contact throughout the project, and when something came up, I was available to make a decision. The end results are nothing less than fantastic!
I have never seen more thorough, efficient, on-time contractors. Conspec consistently goes above and beyond. I sought several bids before going with them. Though they weren't the least expensive, I was convinced that the quality and integrity in their work would far outweigh any other contractor with whom I spoke.
Conspec has also done smaller projects at our home - building a custom fence, general handy work, etc.
I cannot recommend Conspec highly enough!
May 19, 2013

lar706a
Relationship
Client
Conspec Building Systems completed a large scale dormitory bathroom, other bathroom, and laundry room remodel for a sorority house.
They performed the effort with the highest degree of professionalism, and within budget and schedule. The schedule was critical as the house is vacant only in the summer months. The budget was also critical as the management of the property operates as a non-profit entity and seeks to be as cost efficient as possible.
Conspec also assisted with successfully obtaining the various building permits, which had some nuances due to the nature and use of the property as a sorority house.
We would highly recommend Conspec Building Systems for large scale remodeling efforts.
April 22, 2013

rickzook
Relationship
Colleague
I met Roger on an extensive remodel in Beverly Hills. The short time allowed to complete the project required Roger to keep all sub contractors on schedule. The project ran smoothly and was completed on time. No quality was compromised. The client was impressed.
Since our first meeting we have worked on a half dozen jobs, some of them quite difficult. He has come through on every one.
Roger has extensive knowledge of the trades required in construction. He uses time tested sub contractors, and it's always a pleasure to be part of his team.
I recommend Conspec whenever asked; and I don't recommend tradesmen unless I'm sure of their skills.
And...he answers his phone!
Richard Zook
Zook Woodwork
April 14, 2013Last modified:April 16, 2013

laurenceallenarchitectaia
Relationship
Colleague
One of the finest contractors I have ever used. I am an architect in Southern California and have worked with a number of residential and commercial contractors. Mr. Krost is at the top of my list. His attention to detail is the best. He manages every project to make sure the work is perfect and the client is happy. My recommendation completely. Laurence Allen Architect, AIA.
April 11, 2013Last modified:December 16, 2017
1 Ideabook
4 Comments
Commented: Hello, can you please provide more information about the room divider?Hi, thanks for the question!
We had this room divider custom made by our cabinet maker to a design provided by the owner of the home. This divider was similar to a divider that the home owner saw in ...
May 10, 2020
Commented: Shower panTerrazzo shower pan.
December 30, 2016
Commented: kooking for cherry latticewine rack insert to go intocabinet 32x12x12Hafele website in cherry or maple
March 3, 2015
Commented: How did you make shelvesHi Nicki; the shelves were made by drilling holes in solid wood shelves and running rope thru the holes (with knots tied under each hole). HTH! Also, since this was a reality show you can buy the epis...
November 24, 2014
Contact ConSpec Building Systems
![]() | ConSpec Building Systems |
13351 Riverside Dr #310
Sherman Oaks, CA 91423
Sherman Oaks, CA 91423
Typical Job Cost $50,000 - 1.5 million
License Number 736784
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