Buyer's Guide: What to Know Before Purchasing a Home with Solar Panels in 2026

You've found your dream home—and it comes with solar panels. That's great news, right? Solar homes can save thousands on electricity, but not all solar is created equal. Before signing, you need answers.

According to Zillow's 2025 data, homes with solar panels sell for 6.9% more than comparable homes—but that premium applies mainly to owned systems. Leased solar can reduce buyer interest and complicate financing.

Related: If you're selling a home with solar, check out our complete guide: Selling a Home with Solar: Must-Knows for 2026

Who Owns the Solar Panels?

Before making an offer, determine the solar ownership structure:

1. Seller-Owned Solar (BEST)

The seller paid cash or financed and paid off the system.

Advantages:

No monthly payments
Full ownership transfers
All warranties transfer (25-year panel, 10-25 year inverter)
You receive all future incentives
Net metering credits are yours
Increases home value 6-10%
Qualifies for traditional mortgages

Verify: Original installation contract, warranty docs, interconnection agreement, performance data, no UCC-1 liens.

2. Financed Solar (CAUTION)

Seller has an outstanding solar loan.

Two scenarios:

Seller pays off at closing (best outcome)
You assume the loan (requires lender approval, affects your debt-to-income)

Warning: Some mortgage lenders won't approve homes with assumable solar loans.

3. Leased Solar or PPA (COMPLEX)

Solar company owns equipment, seller pays monthly.

How it works:

Monthly lease payment ($50-$300+ residential)
20-25 year term
Annual escalators (2-3.9%)
You must qualify with solar company

Critical issues:

Solar company can reject you (kills the deal)
15-25 year commitment with annual increases
Lenders view as property liens
Buyout costs: $15,000-$40,000
Escalators compound over time

Solar lease providers:

Sunrun: Generally smooth (Rating: ⭐⭐⭐⭐)
Vivint: Fair process (Rating: ⭐⭐⭐)
Tesla: Difficult transfers, poor service (Rating: ⭐⭐)
Sunnova: Professional but slow (Rating: ⭐⭐⭐)

Calculate If Solar Is Worth It

For OWNED Solar:

Get specs: System size (kW), panel brand, inverter type, installation date

Calculate savings:

8 kW system producing 11,500 kWh/year
At $0.13/kWh = $1,495 annual savings
Fair value premium: 6-10% ($18,000-$30,000 for $300k home)

Factor degradation: Panels degrade ~0.5% per year

For LEASED Solar:

Example (BAD lease):

Lease: $150/month = $1,800/year
Production: 10,000 kWh × $0.13 = $1,300 value
Result: LOSING $500/year

Example (Marginal):

Lease: $120/month = $1,440/year
Production: 12,000 kWh × $0.13 = $1,560
Net savings: $120/year (minimal)
With 2.9% escalator, becomes negative by year 10

Demand:

Zero premium for poor economics
0-3% premium max for favorable leases
Or seller pays first 2-3 years
Or seller buys out lease

Solar System Inspection

Hire Solar-Specific Inspector

Cost: $300-$600

They check:

Panel condition (cracks, discoloration)
Inverter operation
Wiring and connections
Mounting integrity
Roof condition
Production vs. expected output

DIY Checks

Monitoring system:

Request login from seller
Review 12 months production
Check for drops or errors
Verify inverter online status

Visual:

Panels: Look for damage
Inverter: Check for error lights
Wiring: Look for damage
Roof: Check for leaks

Red flags:

Seller won't provide monitoring access
Missing production data
Recent production drops
Inverter offline
Visible damage
Roof leaks

Net Metering: Hidden Value

What it is:

Send excess solar to grid
Receive credits on utility bill
Use credits when consuming more than producing

Grandfathered rates = major value:

California:

NEM 2.0 (old): $0.30/kWh credit
NEM 3.0 (new): $0.08/kWh credit
NEM 2.0 worth 4X more

Verify transfer:

Contact utility before offer
Confirm grandfathered rates transfer
Make net metering transfer a contingency

Mortgage Financing with Solar

Owned Solar: Usually Fine

Lenders like owned solar (increases value, no payments).

Leased Solar: Complications

Lender concerns:

UCC-1 liens (requires subordination)
Lease payments affect debt-to-income
Transfer approval risk
Future resale concerns

FHA loans: Particularly strict, many refuse leased solar

VA loans: More flexible

Conventional: Most flexible with proper documentation

Best practices:

Pre-qualify with solar-experienced lender
Disclose lease upfront
Allow 60-90 days for closing
Make financing contingent on solar approval

Negotiating Price

Owned Solar:

Fair premium: 6-10% ($18,000-$30,000 for $300k home)

Adjust for:

System age (older = less premium)
Inverter warranty remaining
Recent repairs
Local market comparisons

Leased Solar:

Start with ZERO premium

Only accept premium (0-3% max) if:

Net savings $1,000+/year
Short remaining term (5 years or less)
Low escalator (under 2%)
Easy transfer

Demand reduction if:

Costs more than electricity value
High escalator (3%+)
Long term (15+ years)
Difficult transfer (Tesla)

Red Flags: When to Walk Away

🚩 Tesla/SolarCity lease (difficult transfers, poor service)

🚩 Negative net savings (lease costs more than electricity value)

🚩 Seller won't provide documentation

🚩 Recent system failures

🚩 Roof damage near mounts

🚩 Lender refuses the loan

🚩 Unrealistic seller expectations (10%+ premium for leased system)

Buying Checklist

Before Offer:

[ ] Determine ownership type
[ ] Get lease agreement (if leased)
[ ] Calculate net savings
[ ] Review production data
[ ] Check monitoring access
[ ] Verify net metering
[ ] Pre-qualify with solar-experienced lender

In Offer:

[ ] Solar transfer approval contingency
[ ] Net metering transfer contingency
[ ] Solar inspection contingency
[ ] Mortgage approval contingency
[ ] 60-90 day closing timeline

During Due Diligence:

[ ] Receive all solar documentation
[ ] Schedule solar inspection
[ ] Submit lease assumption (if applicable)
[ ] Submit net metering transfer
[ ] Review title for liens

Before Closing:

[ ] Confirm solar company approval
[ ] Confirm utility approval
[ ] Confirm lender approval
[ ] Receive monitoring credentials
[ ] Verify warranties transfer

At Closing:

[ ] Sign solar transfer agreement
[ ] Sign net metering transfer
[ ] Receive all passwords
[ ] Get system operation tutorial

Commercial Property Buyers

Commercial solar has unique complexities:

PPAs dominate:

15-25 year contracts
Pay per kWh
Annual escalators

Financing challenges:

UCC-1 liens require subordination
Solar payments affect NOI
Entity transfer restrictions

Due diligence:

Review PPA with attorney
Calculate net savings
Verify tenant benefits
Check solar company stability
Review O&M contracts

Related: For commercial sellers, see Commercial Owner Financing section

Questions to Ask Seller

About the system:

Own or leased?
If owned: Paid off?
If leased: Monthly payment and term?
Annual escalator?
When installed?
System size?
Average production?
Can I see 12 months data?
Panel and inverter brand?
Any failures or repairs?

About transfer: 11. Contacted solar company about transfer? 12. Transfer process and timeline? 13. Transfer fees? 14. Net metering grandfathered? 15. Contacted utility? 16. Will provide all documentation? 17. Extend closing if needed?

About roof: 18. Roof age? 19. Any leaks near panels? 20. Last roof inspection?

Common Mistakes to Avoid

❌ Assuming all solar is good ❌ Not checking lender solar experience ❌ Accepting seller's production estimates ❌ Ignoring escalator clauses ❌ Skipping solar inspection ❌ Not verifying net metering transfer ❌ Paying premium for leased solar ❌ Short closing timeline

Is a Solar Home Worth It?

Owned solar: Usually YES

Significant savings
Increases value
Environmental benefits
Smooth transfer

Leased with good terms: MAYBE

Net savings $1,000+/year
Moderate escalators (under 2.5%)
Easy transfer

Leased with poor terms: NO

Negative savings
High escalators (3%+)
Long term (15+ years)
Difficult transfer

Get Expert Help

Work with:

Real estate agent with solar experience
Real estate attorney for lease review
Solar inspector for system verification
Mortgage lender with solar experience

Final Thoughts

Solar homes offer tremendous benefits when you do your due diligence:

✅ Verify ownership type ✅ Calculate actual savings ✅ Inspect the system ✅ Confirm transfers ✅ Work with experienced professionals ✅ Negotiate appropriately

Questions about buying a solar home? Contact Solar Sam for expert guidance.

📞 (573) 819-9623 📧 info@solarsam.com

More Solar Real Estate Resources:

Buyer's Guide: Purchasing a Home with Solar Panels in 2026