GCC Designs

Business Details

36 Years

experience

Your Trusted Partner for Home Design & Construction Solutions

Since 1990, GCC Designs has been a trusted partner for homeowners seeking expert residential design and construction management solutions. With over 30 years of experience, our team specializes in transforming visions into reality through customized floor plans, CAD drawings, and permit-ready documentation. Led by owner Mark Greenwald, a certified Project Management Professional (PMP) with 35 years of industry expertise, we combine technical precision with a client-centric approach to deliver projects on time and within budget. Our reputation for reliability, quality craftsmanship, and transparent communication has been built through 250+ successful projects across Southern California.

We pride ourselves on proactive problem-solving, adherence to local regulations, and a commitment to sustainable design practices. Recognized with five NARI awards for excellence in remodeling, our services span from small interior upgrades to full-scale home additions and accessory dwelling units (ADUs). By maintaining open lines of communication and prioritizing client needs at every stage, we ensure a seamless transition from concept to completion. Our comprehensive support includes site surveys, structural evaluations, and construction oversight, making us a one-stop solution for residential building projects.

Services

Residential Additions ADU Designs Kitchen Remodels Bathroom Remodels Exterior Remodeling Floor Plans CAD Drawings Construction Management Garage Conversions Sustainable Design

Details

Year established: 1990

Highlights and features

30+ years of experience in residential design and construction
Certified Project Manager with PMP credentials
Client-focused approach ensuring timely and budget-conscious results
Award-winning designs recognized by NARI
Comprehensive service from concept to completion

What people say

Prompt and professional Exceeded expectations Reliable and trustworthy Award-winning designs Seamless process

Website

Update Listing

Services

Residential Additions

We design and manage residential additions that seamlessly integrate with existing structures. Our process begins with detailed site analysis and client consultations to create functional, code-compliant expansions. From concept sketches to construction oversight, we ensure structural integrity while maintaining aesthetic continuity with your home's original design.

ADU Designs

Our ADU designs maximize space efficiency while meeting local zoning requirements. We create comprehensive floor plans for detached or attached units, incorporating energy-efficient features and universal design principles. Our team handles permit documentation and coordinates with utility providers to ensure compliance with solar panel and energy code mandates.

Kitchen Remodels

We transform kitchens through customized layouts that optimize workflow and storage. Our designs balance aesthetics with practicality, incorporating modern appliances, efficient lighting solutions, and durable materials. We manage contractor coordination and ensure compliance with structural and electrical codes throughout the renovation process.

Bathroom Remodels

Our bathroom renovations focus on creating functional, spa-like environments tailored to client needs. We specialize in accessible design features, water-efficient fixtures, and moisture-resistant materials. From small powder rooms to luxury master suites, we handle plumbing modifications and ensure ADA compliance when required.

Construction Management

We provide end-to-end construction management services, coordinating contractors and monitoring project timelines. Our oversight includes quality control inspections, budget tracking, and permit compliance verification. We maintain regular client communication through progress reports and on-site visits to ensure project goals are consistently met.

People

Mark Greenwald

Owner & Building Designer

With 35 years in construction and 250+ completed projects, Mark Greenwald combines PMP-certified project management with hands-on building expertise. His approach emphasizes active listening, technical precision, and sustainable practices to deliver client visions within budget and timeline constraints.

Questions

What types of residential projects does GCC Designs handle?

We specialize in home additions, ADUs, kitchen and bathroom remodels, exterior renovations, and custom floor plans. Our services cover projects from small updates to full-scale construction.

Do you assist with permit approvals?

Yes, we prepare detailed permit documentation and manage submissions to local authorities, leveraging our expertise to streamline approvals for building, zoning, and energy compliance.

How do you handle project timelines?

We create realistic schedules during planning and provide regular progress updates. Our hands-on oversight ensures timely completion while addressing any unexpected challenges that arise.

Are your designs energy efficient?

We incorporate energy-saving features like LED lighting, tankless water heaters, and high-performance insulation. Our ADU designs meet California's solar panel requirements for new constructions.

Can you work with existing contractors?

Yes, we collaborate with your chosen contractors while maintaining quality control. Our construction management services ensure all work aligns with approved plans and specifications.

Reviews (6)

Write a Review

Rory S.

Dec 28, 2021 Report

Very satisfied with GCC! Quality & well thought out work all within a very reasonable timeframe. Will definitely use him again when the need arises.

Barbara M.

Oct 25, 2021 Report

Had the pleasure of working with Mark during my renovation. Not only was he helpful. He provided high quality, easy to follow blue prints for my general contractor. His knowledge of different building codes and requirements helped tremendously. Even after providing me with my drawings, he was always available to answer questions and provide me with advice during the various phases of my home renovation. I highly recommend him.

Don C.

Oct 19, 2021 Report

Mark is great to work with, always returns calls, and extremely knowledgeable. His plans for my project were approved with no corrections. He has my highest recommendation!

David N.

Feb 16, 2021 Report

We gave Mark (GCC owner) a call based on his years of experience and reviews from his past clients to draw plans for a room addition and kitchen remodel. He listened to our ideas and along with his creative input came up with a great design. Mark has full knowledge of the current building codes and the plans were approved by the city without a hitch. His honesty, dependability, and efficiency made the whole experience stress free. Thank you!

Tico L.

Feb 03, 2021 Report

Mark from GCC is great! Didn't end up using him as he draws up plans, but talk about a friendly and knowledgeable guy! He referred me to someone that could help me. If I needed someone to draw up plans, I would definitely consider using GCC.

Rachel G.

Jan 22, 2021 Report

I wish I had hired GCC years ago to help me visualize the master bathroom remodel. Mark responded immediately, made great recommendations, and quickly drew and delivered the plans. The software used to visualize the changes made all the difference for me since I need to see the changes before executing the project. Thanks for your help GCC!