About Loona Construction

One team. Your whole build, handled.

Loona Construction is a Bay Area builder and construction management company. We design, engineer, permit and build ADUs, additions and custom homes, with one team that owns the result.

1-bedroom ADU built by Loona, San Jose
50+ successful projectsAcross the Bay Area
5.0 on Google18 reviews
Licensed and insuredCSLB Lic. #1095467
$1,000 depositThen you pay only for finished work

How we’re set up

From first drawing to final inspection

You don’t hire an architect, an engineer and a contractor separately and pass messages between them. One team plans the whole project and owns the result.

Reviewing plans on an ADU job site
  1. 01

    Design

    Plans, renderings and a materials list, built around your lot and budget.

  2. 02

    Engineering

    Structural engineering and Title 24 energy calculations, planned with the builders so the drawings can be built.

  3. 03

    Permits

    We submit to the city, answer every comment and resubmit until your permit is approved.

  4. 04

    Construction

    Licensed crews do the trades. We schedule and manage every one of them and book each inspection.

What we stand for

What you can count on

01

Priced in full before we start

The full project is priced from your approved plans and a detailed scope of work, then locked in your contract. You decide in your own time.

02

Always ahead

The budget is planned before we break ground, each inspection is booked as the trade finishes, and we answer every city comment and resubmit for you. The site doesn’t sit waiting.

03

Clear about money from day one

A clear scope, exclusions named up front, a $1,000 maximum deposit, and milestone payments that never run ahead of the work.

“Owning an older home means unexpected issues always come up, but Eric and his team never left us to figure things out alone. They were responsive, supportive, and always had solutions.”
Isaac R. · Google review · September 2025 · Read on Google

Working with Loona

What every client gets

  • One point of contactFrom first drawing to move-in, one person answers your questions.
  • Updates every week, with photosPlus a note after every inspection and milestone.
  • A private project hubLive photos, inspection reports, your payment schedule and every required document, in one place online.
  • Answers the same business dayCall, text or email, Monday to Friday, 9am to 5pm.

Next step

See what you can build on your lot.

We review every request within 1 business day. If it’s a project we take on, we call you to talk through your lot, your city’s rules and a rough budget. There’s no cost to find out.

Or call (510) 453-0400, Monday to Friday, 9am to 5pm.

Step 1 of 4

What are you building?
Call Check my lot and budget

Follow us

See what we’re building on Instagram

Follow @loona_construction for job-site updates, finished ADUs and straight answers on permits and costs across the Bay Area.

Follow us on Instagram