24-hour standard turnaround All 50 states NEC 2023 · IFC · NFPA 855 Engineering since 2013
Solar Designs USA Plan sets & PE stamps
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Solar permit design · PE structural stamps

Solar permit plan sets, PE-stamped in 24 hours.

Outsourced solar design for installers and EPCs nationwide. Permit-ready plan sets cost $250 flat under 20 kW, with structural PE stamps, shade reports and ESS battery layouts added as you need them — drawn to the code year your AHJ actually adopted.

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13 years· 50 states· 24h turnaround· Sealed calcs included
Permit plan set sheet PV 1.0: site plan for a 14.19 kW DC array of 33 modules across four roof planes, with all three strings colour-coded, 18-inch and 36-inch fire access pathways hatched, and the load calculation table, bill of materials and roof section schedule drawn on the same sheet.
Site plan & array layoutSheet shown
14.19 kW DCSystem
33 modulesArray
4 planesRoof

Sheet index

What’s in a standard set.

Everything the jurisdiction needs to review and approve, plus a specification sheet for every component — bundled in, never sent separately. Structural and battery sheets are add-ons, ordered on the jobs that need them. Commercial and utility-scale sets add civil, interconnection and equipment-pad sheets.

Sheet  ·  Description

  • PV 0.0Cover sheet, system specifications & governing codes
  • PV 1.0Site plan, fire pathways, string layout & load calculations
  • E 1.1Three-line diagram, conductor schedule & 120% busbar calculation
  • S 1.1Installation notes & attachment details
  • E 1.2Warning labels & placard schedule
  • SpecsEquipment specification sheets for every component
  • StructuralSealed framing plan & load calculations — +$200
  • ESSBattery layout, clearances & ventilation — add-on

Open the sheet explorer — magnify any region and see what a plan checker looks for →

Plan check

The six redlines that hold up most permits.

After thirteen years of submittals across every major AHJ, the rejection reasons repeat. Each one is checked before your set leaves our office — which is what you are really buying when you outsource solar design.

  • IFC 1205 / IRC R324

    Fire access pathways

    Ridge setbacks and access pathways missing, or dimensioned to a code year the jurisdiction never adopted.

    Every pathway and setback is dimensioned on PV 1.0 against the adopted code year.

  • NEC 690.12(D)

    Rapid shutdown labeling

    Placards absent, wrong wording, or shown without a mounting location.

    Full placard schedule with call-out locations on E 1.2.

  • NEC 705.12(B)(3)

    Busbar overload

    The 120% allowance applied to the wrong busbar rating, or supply-side taps shown without justification.

    Busbar and OCPD arithmetic is printed on E 1.1, never assumed.

  • Structural

    Unsealed calculations

    Loading asserted on the drawing with no stamped calculation package behind it.

    Sealed calcs for site-specific wind and snow ship inside every structural set.

  • Listings

    Missing equipment data

    Cut sheets omitted, or UL listing numbers absent from the equipment schedule.

    Cut sheets bundled with the set and listing numbers carried on E 1.1.

  • NFPA 855

    ESS clearances

    Battery separation, egress clearance and ventilation not shown on the drawing.

    Clearances dimensioned and ventilation noted on the battery sheet.

Common questions

What is included in the standard permit package?
For $250 on systems under 20 kW: cover sheet with project data and code summary, site plan with setbacks and fire access pathways, roof plan and array layout, attachment and mounting details, electrical single-line and three-line diagrams, equipment schedule, and the placard and label schedule. Specification sheets for every component are bundled in as standard. Delivered as one submittal-ready PDF. The structural stamp is a $200 add-on, since most jurisdictions only ask for it on re-roofs, tile and marginal framing.
What data do you need from me to start a design?
The service address, the serving utility and the AHJ, your equipment list (modules, inverters, racking, ESS), and either a site survey or roof photos with measurements. If you already have a sales proposal or a layout, send it and we will work from it rather than starting over.
Is there a flat rate per plan set, or is it based on system size?
$250 flat for a standard residential set under 20 kW. The structural stamp is $200 on top, and battery or EV charger sheets are priced separately. Anything over 20 kW is quoted per project. Installers on a standing weekly schedule pay a reduced rate per set — ask us to set one up.
Can you integrate with an existing solar system?
Yes. Additions and retrofits are routine. We document the existing array and service equipment, recalculate busbar and OCPD against the combined system, and draw the interconnection method the utility requires for that service type.
What is your turnaround time for corrections or AHJ revisions?
Same business day in most cases. Corrections to drawings we produced are at no charge, including resubmittal sheets.
How do you handle structural stamp and calculations?
It is a $200 add-on rather than part of the base set, because most AHJs only require it on re-roofs, tile and marginal framing. When you order it, a licensed PE reviews the framing, runs load calculations against the site’s wind and snow criteria from the adopted code year, and seals both the framing plan and the calculation package.

Order a plan set

Send your solar project in five minutes.

Everything we need to draw and seal a residential set. A licensed engineer starts the same business day and the stamped PDF lands within 24 hours.

01

Project address

Street address of the install. Attaching a utility bill is optional, but it carries the exact service address, the meter number and the unit number on anything multi-family.

02

Modules

Quantity and whatever you know of the model. “REC 450W” is enough — we’ll match the exact part number and pull the cut sheet.

Enter a wattage and we size the array
Over the 20 kW instant-order limit

Let’s scope this one first.

Past 20 kW the sheet count, structural scope and interconnection method vary too much to price flat. Fill in the rest of this form and send it as a quote request — you get a number back the same business day, and no card is taken now.

Already sending us work every week? Installers on a standing design schedule pay a reduced rate per set, commercial included. Mention it when you send this and we’ll set it up.

03

Inverter

Microinverter, string or hybrid — the model drives the single-line and the rapid-shutdown labeling.

04

Main service panel

Rating and physical location. We need both to run the NEC 705.12 busbar check and to place the point of interconnection on the site plan.

05

Racking system

Drives the attachment details on S 1.1 and the span tables behind the structural calculations.

Manufacturer *
06

Site photos

The more we can see up front, the fewer questions come back to you mid-draw.

0 of 5 photos0 MB of 20 MB
07

Add-ons

Each one adds its own sheet to the set.

Adds a sealed framing plan with load calculations run against your jurisdiction’s wind and snow criteria. Most AHJs require it on a re-roof, on tile, and on anything with marginal rafters.

08

Your details & payment

The set is emailed to this address as a sealed PDF with the calculation package attached.

No card needed now. Send the order and we invoice you. Card payment is coming shortly via Stripe’s hosted fields, so card data never touches your server.
✓

Work order received.

A licensed engineer has it. You’ll get the sealed PDF and the calculation package by email within 24 hours — sooner if the jurisdiction is one we draw for every week.

  1. Confirmation sent to your email, with your reference number.
  2. We invoice you for the set — no card has been charged.
  3. If anything on the roof needs clarifying, we call before we draw — we don’t guess.
  4. Stamped set delivered as one submittal-ready PDF.

What we draw

Four disciplines, one submittal-ready set.

A standard permit-ready set costs $250 flat under 20 kW, with component specification sheets bundled in. Add the structural stamp, a shade report or battery design only on the jobs that need them. We work as the outsourced design department for installers and EPCs from California to the east coast.

Solar knowledge base

Plan-check rules, code changes and the questions installers keep asking — one new article a week, each one checked against the code edition it cites.

Browse the knowledge base →

Start a work order

Send one job. Judge the set.

info@solardesignsusa.com (323) 682-2282
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