Mixed-Use
A mixed-use building combines several functions into one structure. For instance, parts of a building may be devoted to hotel rooms while other parts are used for residential units and commercial services.
EV Charging Infrastructure & Solar PV System Design
Smarter Energy Solutions Backed by Complete Engineering
Whether you are developing a commercial property, upgrading a multifamily project, or adding sustainable energy features to your home, S3DA Design provides complete engineering support for EV charging infrastructure and solar photovoltaic (PV) systems.
Unlike standalone installers, our team delivers fully coordinated Structural, Mechanical, Electrical, and Plumbing (MEP) engineering to ensure your systems are integrated efficiently, safely, and in compliance with local codes and permitting requirements.
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Complete EV Charging Infrastructure Design
We provide engineering support for EV charging systems for:
- Commercial buildings
- Multifamily developments
- Retail centers
- Office buildings
- Parking structures
- Hospitality properties
- Residential homes and garages
Our engineering services include:
- Electrical load calculations and capacity analysis
- Panel upgrades and distribution design
- Utility coordination
- EV charger placement and layout planning
- Conduit routing and power distribution
- Parking lot and garage electrical design
- Permit-ready engineering drawings
- Coordination with existing building systems
By evaluating your building’s current electrical infrastructure, we help prevent overloaded panels, avoid costly installation issues, and create a scalable system that can support future EV charging demand.
Solar PV System Engineering
Our team provides complete solar PV engineering solutions for both commercial and residential projects.
We support:
- Rooftop solar systems
- Ground-mounted solar arrays
- Solar canopies
- Battery backup integration
- Net metering coordination
- Energy storage system planning
- Residential solar installations
- Commercial solar system design
Our solar engineering services include:
- Electrical single-line diagrams
- Load calculations and energy analysis
- PV system layout and equipment planning
- Inverter and battery placement coordination
- Roof attachment details
- Structural mounting design
- Permit-ready plans and calculations
- Coordination with utility and AHJ requirements
Full MEP Integration for Better Performance
One of the biggest advantages of working with S3DA Design is our complete in-house MEP coordination.
Many solar and EV charging installers focus only on the installation itself. Our engineering team evaluates how these systems affect the entire building.
We coordinate with:
- Existing electrical service and panel capacity
- HVAC equipment loads
- Plumbing and utility routing
- Building power distribution
- Emergency backup systems
- Lighting and site systems
- Future expansion requirements
This integrated approach helps improve efficiency, reduce conflicts during construction, and ensure your project performs reliably over the long term.
Structural Review & Faster Permitting
Solar systems and EV charging equipment often require structural review before permits can be approved.
Our in-house structural engineers evaluate roof capacity, mounting conditions, support framing, and equipment loads to help streamline approvals.
We provide:
- Roof load evaluations
- Structural calculations
- Mounting frame design
- Equipment anchorage details
- Seismic and wind design review
- Foundation and canopy support design
- Permit-ready structural plans
By keeping structural and MEP engineering under one roof, we reduce coordination delays and help move your project through permitting faster.
Why Choose S3DA Design
- Complete Structural and MEP engineering under one roof
- Experience with commercial and residential projects
- Permit-ready plans and calculations
- Faster coordination between disciplines
- Support for local permitting and utility requirements
- Scalable designs for future growth
- National experience across multiple project types
Ready to elevate your structural and
MEP designs?
Structural Calculations
While architecture defines the appearance of a building, structural engineering ensures the building stands up and can withstand heavy winds, earthquakes, or gravity loads. Structural calculations are the math behind this ability and determine the properties of columns, joists, beams, slabs, trusses, and other members that comprise a building.
Our structural calculation follows local building codes, therefore not only ensures you can get a permit but also consider value engineering to cut down actual construction costs.
Request a Free Consultation
Planning an EV charging or solar PV project?
Our engineering team can review your property, discuss your goals, and provide a customized proposal for your project.
Sample projects
May 15, 2026
May 06, 2026
Structural design for a Garage Remodel, Buxton, OR
May 04, 2026
MEP design for childcare, Granada Hills, CA
Apr 21, 2026
Mixed-Use Development in Los Angeles, CA
What our clients say
"S3DA Design team are a good hard working group of professionals. They provide great communication, drawings and feedback during all aspects of the design and permitting process. I have worked with them on multiple commercial and residential projects and they always deliver in a timely manner and are priced very well. I recommend using them on any project. Their drawings are methodical and easy to understand, which makes the job easier for everyone! "
Belal Siddiqui
Owner of Mobius Designs
"I truly enjoy working with the S3DA Design team. We have completed several projects and they are professional, communicative, and expedient. They deliver good solutions quickly for a competitive price. Their work usually passes the plan check on the first submittal. I highly recommend the S3DA Design team."
Steve Poehlein
Chief Designer at sp design+build
"My husband and I have a small architectural firm in Atlanta that specializes in transforming shipping containers and modular systems into residential and commercial projects and our "go-to" engineering firm for MEP services is S3DA. They are easy to work with, professional and provide quality work and always deliver on time. Looking forward to continuing the collaboration."
Sharon Ferguson
Co-Founder | Architect | Influencer
"“S3DA Design is one of the best structural and MEP design companies we’ve worked with. Their entire team always delivers us projects of exceptional quality while staying on schedule and under budget. They offer full package design services as well and virtually handle any design projects. We have chosen to work with S3DA Design on our projects” Structural Design"
Evan Wyatt Bliss
Owner & Design Director at STUDIO BLISS LLC
"S3DA contacted me through LinkedIn and while I am usually skeptical of cold messages, I was in need of an MEP engineer so I thought I would give them a shot. After more than a year of working on several projects with their team, I have found them to be responsive, reasonable with timelines and budgets, and willing to stand behind their work. While there are many good engineers out there, S3DA’s customer service stands out as a valuable resource."
Chris Cox
Chief Consultant, Development & Planning at BeGreenLegal Cannabis Consulting
"S3DA Design is a very critical engineering partner for us and our clients because of their attention to detail and professional relationship building skills. They have a very sincere concern for the quality of their work and satisfaction of their clients. Our company provides residential design services requiring the services of a professional structural engineering firm. We have worked with other engineering firms in the past, but S3DA Design has out performed all competitors on several fronts including pricing. But more importantly, it is S3DA’s relationship building and communication skills that have impressed me the most. They sincerely care about the quality of their work and the satisfaction of their clients. I highly recommend them and their work."
Joe Serrano
CEO/Exec. Director at TentMakers Inc./ReCycled Housing
"S3DA is a very conscientious engineering firm with the mindset of coming up with the best solutions for its clients that are effective and cost-efficient. I would recommend S3DA to support your structural designs on your project."
Brenda Hurley
Licensed Realtor at Excel Realty
Frequently Asked Questions
It depends on the complexity of the house, but in most cases, you will need roughly 5 to 8 sets. Those who will need design prints include:
- The owner
- The Contractor
- The Sub-contractors
- The Building Department
- The Mortgage Lender
- The Building Inspector
Yes, you can. If you or your builder have a talent for design, a clear idea of what you want, and if you can create plans that meet your local building authorities, you can go ahead with designing your house.
Well, it depends on several factors such as the complexity of the project, the square area of the land, add-on services like extra revisions, project management services or any type of construction help. We recommend you get in touch with our experts for a better understanding.
Different architects offer numerous services when it comes to initial meetings with potential clients. Many architectural design firms agree to a quick, one-off introduction free of charge to discuss the project, your budget and their ability to deliver.
Our architectural design firm offers
- Conceptual Design
- Exterior Design
- Landscape Design
- Design Development
- Detailed Design and Drawings Production
- Technical Specifications
