I'm doing a final walkthrough on a new house in a lightning-heavy area.

No, this is not complete or safe. Here's why:

Critical Issues:

1. CSST Bonding Deficiency (NEC 2020 250.104(B) & 2023 250.104(C))

• The CSST (Corrugated Stainless Steel Tubing) must be bonded with a dedicated #6 AWG conductor (or larger) that runs directly from the CSST to the electrical service equipment or grounding electrode conductor
• Bonding at the meter nipple alone is insufficient - the bonding jumper must connect to the CSST itself, not just the black iron pipe
• This is a lightning strike risk - CSST can rupture from electrical energy if not properly bonded

2. Grounding Electrode System (NEC 250.50, 250.53)

• Two ground rods are required only if the first rod has resistance >25 ohms (NEC 250.53(A)(2))
• The copper water line bonding at the panel is correct (NEC 250.104(A))

Immediate Action Required:

1. Install dedicated CSST bonding jumper - #6 AWG minimum from CSST to panel/service equipment
2. Verify ground rod spacing - rods must be at least 6 feet apart (NEC 250.53(G))
3. Test ground resistance - if first rod is <25 ohms, second rod may not be required

Recommendation:

This requires a licensed electrician to install the proper CSST bonding. The current installation creates a significant fire/explosion hazard during lightning strikes. Do not proceed with final walkthrough until corrected.

Code References: NEC 2020/2023 250.104(B)(C), 250.53(A)(2), 250.53(G)

No, they are not done. The CSST installation is incomplete and likely non-compliant.

The Issue: You have yellow (non-ARC) CSST. Per NEC 250.104(B) and the manufacturer’s installation instructions (which are enforceable per NEC 110.3(B)), yellow CSST must be bonded to the electrical grounding system to reduce lightning-induced arcing damage. The black iron nipple bonding you described only bonds the rigid pipe at the meter; it does not electrically connect the downstream CSST tubing runs to the grounding electrode system.

Required Fix:

1. Bond the CSST: A #6 AWG copper bonding jumper must connect the CSST system (typically at the manifold or first fitting downstream of the meter) to the service equipment ground bar, the grounding electrode conductor, or the grounding electrode itself.
2. Clamp: Use a listed grounding clamp (e.g., brass) on the CSST brass fitting or a listed CSST bonding clamp—not on the yellow jacket.
3. ARC CSST Exception: If the plumber installed black-jacketed ARC-rated CSST (e.g., TracPipe CounterStrike, FlashShield), bonding is still required by most manufacturers, but the criteria differ. Verify the jacket color and model.

Action: Do not sign off. The electrician must run the #6 bonding jumper from the CSST piping system to the panel ground bar. This is a life-safety issue in a high-lightning area.