Winnetka, CA · January – July 2026 · LADWP / LADBS

Two roofs. Two permits. One correction day.

A newly built two-unit property in Winnetka with a small solar system on each dwelling. Both permits were inspected together, and both came back with corrections on the same day.

On this separately metered two-unit project each dwelling carried its own solar permit and its own interconnection. That meant two of everything — including correction notices, which arrived on the same day and were handled in parallel.

At a glance

Dwellings

Two on one lot

Systems

2.05 kW AC-CEC each

Inverters

Enphase IQ8A

Permits

One per dwelling

Interconnections

Two work requests

Roof

Composition shingle

Corrections

Both permits, same day

Utility / AHJ

LADWP / LADBS

The story

A newly built property in Winnetka: a two-story dwelling with an attached second unit of about the same size, finished and signed off before the solar started. Each unit got its own small array — 2.05 kilowatts AC-CEC apiece — with an Enphase IQ8A microinverter under every module.

Both interconnection applications went in on the same day in January 2026, filed under the parent address because that is the address the property had. The utility assigned two work request numbers and relabeled them to the unit addresses.

Inspections were requested for both units in March. Both permits came back with corrections on the same day — one notice per permit, issued together.

That is the practical consequence nobody mentions at the quote stage: on a property metered like this one, everything the building department does, it does twice. Two permits, two inspection requests, two correction notices. Both notices were handled in parallel rather than one after the other.

Re-inspections were requested two weeks later and the building department released both installations at the start of April.

The utility side closed in July: site evaluation, interconnection approval and permission to operate, again for both units.

How it ran

The calendar runs from the interconnection applications to permission to operate, with the correction cycle handled for both permits together.

What we did

• Designed a separate small array for each dwelling rather than one shared system.
• Filed an interconnection application per dwelling and tracked both work requests.
• Requested inspections for both permits together.
• Cleared the corrections on both permits in one pass rather than one after the other.
• Carried both units through building department release to permission to operate.

System specifications

Is your project like this one?

• You have built, or are buying, a two-unit property and want solar on both halves.
• You want to know what doubles when there are two dwellings and what does not.
• You have received a correction notice and want to know what it changes.
• You want each unit's array monitored on its own.
• Your Winnetka property is served by LADWP, while permits are handled by LADBS.

Cali Energy in Winnetka

Frequently asked questions

Does a two-unit property need two solar permits?

On this project yes — one permit per dwelling, and one interconnection work request per dwelling, because the two dwellings are separately metered. The building department issued its correction notices per permit as well, both on the same day.

What is a correction on a solar permit?

A notice from the building department listing what has to change or be shown before the permit can be signed off. It is a normal step rather than a failure. On this property both permits drew one on the same day, and re-inspections were requested two weeks later.

Is it faster to put one bigger system on a two-unit property?

It depends on how the property is metered. Where each dwelling is its own utility customer, each needs its own system and its own interconnection. That is the structure here, and it is decided at design rather than at installation.

How long did the whole thing take?

Applications in late January 2026, corrections in March, building department release at the start of April, permission to operate in July.

Does Cali Energy work on new two-unit developments in Winnetka?

Yes. Winnetka is inside City of Los Angeles boundaries, so permits run through LADBS and interconnection through LADWP, and on a two-unit property that happens twice.

What this would look like on your roof

Related

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• Twenty-two modules. Twenty-two reporting Chatsworth, CA · 8.14 kW DC · REC Alpha Solar
• The inspection passed. The paperwork did not Granada Hills, CA · 7.47 kW · 76 days Solar

This timeline reflects this property and this permitting path. Updated September 2026.