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San Mateo & the Peninsula

About SM.AutoDetailing

One person.
Every job.
No exceptions.

SM.AutoDetailing is owner-operated, which means Demian shows up to every single job — no subcontractors, no variation, no guessing who's working on your car. Just consistent results every time.

Owner-operated

3+ Years active

75+ vehicles detailed

SF Peninsula

Demian

Owner & Detailer

5.0 ★

Operation

Owner Every Job

Response

Same-Day

Service Area

We Come to You

Travel Fees

None

Founder

Demian
Arroyo

Founder · SM.AutoDetailing

I started SM.AutoDetailing at 13 with my own money and a basic kit. No investors, no backing — just me deciding I wanted to build something real while most people my age weren't thinking about it.

Three years in, nothing about that has changed. I show up to every job personally. Same standard every time, no matter the car or the client. That consistency is what this business was built on.

The goal was never to be the cheapest option. It was to be the one people come back to — because the work speaks for itself.

Every service is designed to deliver real results and real value — not just a clean car, but one that's protected, presentable, and done right. We hold ourselves to the highest standard of quality and client satisfaction every single time. No exceptions, no off days.

Founded at 13 · Self-funded · Owner-operated

Peninsula Work

Our Philosophy

Every package.
Every time.
No exceptions.

We don't believe in a "good enough" service depending on what you paid. Every package we offer has been built and refined with one outcome in mind — you walk away impressed. That's not a guarantee we throw around. It's the standard we hold ourselves to on every single job.

"The thing that has never changed is our attention to detail and desire to push ourselves to offer the highest quality service."

— Demian Arroyo, Founder of SM.AutoDetailing

01

Maximum Value

Every package delivers more than you expect — not just what you paid for.

02

Constantly Refined

We improve our process so the outcome keeps getting better job after job.

03

Attention to Detail

Nothing gets missed. The standard doesn't drop because the job is small.

04

Client First

Your satisfaction is what we're working toward on every single job.

As Seen In the Press

Recognized
beyond the work.

The business caught the attention of the San Mateo Daily Journal — not for a promotion, but because the story behind it was worth telling.

SM Daily Journal

July 21, 2025

Guest Perspectives · Teen Entrepreneurship

Rethinking Social Media:
A Resource for Teen Entrepreneurship

By Giselle Espinoza

Journalist Giselle Espinoza found SM.AutoDetailing on Nextdoor, booked a detail, and then decided the story behind the business was worth telling. The piece explores how Demian started his business at 13, self-funded it from the ground up, and turned the same social media most teens scroll past into a genuine learning tool and business launchpad.

"Do not give up. It just gets hard for a long period of time and people think it's over... I have been through that time, I just tell myself I know it is going to get better."

— Demian, featured in the Daily Journal

"That's the most important thing to me actually, that it's mine."

— Demian, on self-employment

Featured at age

15

San Mateo, CA

Publication

SM Daily Journal

Print & Digital · Local News

Read Full Article

Our Standards

The standard behind
every detail.

Three things we hold ourselves to on every single job. No shortcuts, no exceptions — whether it's a quick wash or a full ceramic restoration.

01

Our Promise

5.0 ★ · 46 Verified Reviews

Google · Nextdoor · Yelp — Peninsula-wide

01

of 03

Precision on every single job.

The process doesn't change based on the service or the car. Every job gets the same level of attention — methodical, thorough, and finished only when it's actually right. That's what 5.0 stars is built on.

Same process whether it's a wash or full restoration

We don't leave until every panel and surface is done right

Owner does the work — not a crew, not a subcontractor

Demian

Founder · Lead Detailer · San Mateo

★★★★★

02

Convenience

We come to you — no shop, no drop-off

14+ cities across San Mateo & the Peninsula

02

of 03

At your driveway. On your schedule.

Mobile means we bring everything — pressure washer, steam machine, extractor, chemicals, pads — to wherever your car is. You don't rearrange your day. You just come back to a clean car.

Full setup at home, work, or any parking spot

Same-day response, Mon–Sun 9AM–7PM

No travel fees across the service area

Demian

Founder · Lead Detailer · San Mateo

★★★★★

03

Results

75+ vehicles · 3+ years of consistent results

100% recommendation rate from verified clients

03

of 03

Results that are visible immediately.

Not surface-level clean. Properly decontaminated paint, extracted carpet, conditioned leather, and protected surfaces that actually hold up. The difference shows — and it lasts longer than a car wash.

Visible improvement from the first pass

Protection that extends time between services

Interior and exterior treated — not just wiped down

Demian

Founder · Lead Detailer · San Mateo

★★★★★