Expert Residential Solar Design & Permit Plan Sets — Delivered in 24–48 Hours
Scale your installation volume without the overhead of an in-house drafting team. We deliver flawless, code-compliant residential plan sets in as little as 24 hours.
WHAT WE OFFER
High-Volume Residential Engineering Services
Scalable, strictly compliant CAD and engineering solutions built specifically to accelerate pipelines for top-tier solar installers.
Rooftop Solar Layout Design
We design precise, optimized rooftop solar panel layouts for single-family and multi-family homes — accounting for roof pitch, orientation, shading, setbacks, and local code requirements. Every layout is engineered for maximum energy production and delivered permit-ready.
Solar PV System Design
Our engineers design complete residential solar PV systems — including panel selection, string sizing, inverter configuration, and energy production estimates — tailored to each homeowner's energy needs and roof structure.
Electrical Single-Line Diagrams (SLD)
Comprehensive and error-free electrical CAD drafting. We deliver complete Single-Line and Three-Line diagrams detailing the exact electrical flow from the rooftop array down to the main service panel, subpanels, and utility meter.
AHJ-Ready Permit Plan Sets
Every residential permit package is explicitly engineered for the local Authority Having Jurisdiction (AHJ). We integrate all mandatory safety placards, label maps, structural mounting calculations, and equipment cut sheets to ensure a seamless first-time approval.
AHJ-Ready Permit Plan Sets
Every residential permit package is explicitly engineered for the local Authority Having Jurisdiction (AHJ). We integrate all mandatory safety placards, label maps, structural mounting calculations, and equipment cut sheets to ensure a seamless first-time approval.
PTO & As-Built Documentation
We provide rapid red-line updates and post-installation "as-built" documentation reflecting the exact field conditions, allowing you to secure your final municipal inspections and utility Permit to Operate (PTO) immediately.
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What Is Included in Your Residential Permit Package
Built for Installer Profitability & Speed
Every residential permit package we deliver is meticulously drafted and reviewed through a multi-tier QA process. We provide everything your local permitting office requires
- AHJ-compliant site plans and dimensioned roof layouts
- Complete electrical Single-Line Diagrams (SLD) and wire sizing
- Strict IFC fire safety setbacks and structural access pathways
- Racking, mounting, and structural attachment details
- Complete system string sizing and inverter configuration
- Custom warning placards and electrical labeling maps
- Integrated equipment specification (cut) sheets
- Priority free revisions until the permit is approved by the AHJ
Eliminate Your Permit Backlog Today
Stop letting CAD drafting limits dictate your revenue. Partner with NexaSun to clear your residential pipeline instantly with fast, reliable, and rigorously compliant engineering.