Home / Services / Plumbing & Electrical

Plumbing & electrical, handled in-house on your project

Most remodel horror stories are really plumbing and electrical stories — the trades hiding in the walls. We keep them in-house on our projects, and we take on the upgrade work older LA and Orange County homes need: repipes, water heaters, panel upgrades, rewires, and EV charging.

RepipesWater heaters200A panel upgradesRewiringEV chargersRecessed lighting
Plumbing & Electrical — Guillen Construction

Everything is permitted and inspected, and here's the part homeowners love: our own drywall crews patch and texture-match afterward, so the job is actually finished when it's finished.

Plumbing & Electrical

What's included

Repipes & rough plumbing

Copper and PEX repipes for aging galvanized systems, plus full rough-in for remodels, additions, and ADUs.

Water heaters

Tank and tankless replacements with the seismic strapping, venting, and permits California actually requires.

Panel upgrades

100-to-200-amp service upgrades that make EV chargers, ADUs, and electrified kitchens possible — coordinated with the utility.

Rewiring & new circuits

Knob-and-tube and cloth wiring out, grounded copper in — plus dedicated circuits for the appliances that keep tripping yours.

EV charger installation

Level 2 charging at home, sized to your panel's real capacity — often the same project as a panel upgrade.

Lighting & fixtures

Recessed LED layouts, under-cabinet, exterior — designed so the light lands where you live, not just where the old box was.

How it works

How we work

01

Walk the job

We meet at your property, listen, measure, and give you straight answers — including the ones you didn't ask for. Estimates are free.

02

Price & permits

A written, line-item scope with a milestone payment schedule that follows California law. Plans, engineering, and permits handled.

03

Build

Our own crews, a clean site, and a schedule we actually keep. You get one point of contact and updates you don't have to chase.

04

Walk-through & warranty

We punch the list to zero, pass final inspection, and stand behind the work after the trucks leave.

FAQ

Questions we hear a lot

Are permits pulled for this work?

Always — repipes, panels, water heaters, and new circuits all get permits and inspections. It protects your insurance coverage and your resale, and it's the only way we work.

How long does a whole-house repipe take?

Usually 2–4 working days for the plumbing, with water back on every night — then our drywall crew patches and texture-matches the openings, which is the step standalone plumbers leave you to arrange.

Do I need a panel upgrade for an EV charger or ADU?

Often, but not always — we load-calc your panel first. If the math works on 100 amps we'll tell you; if not, we handle the 200-amp upgrade and utility coordination as one project.

Copper or PEX?

Both done right outlast you in this climate. Copper takes heat and sun better at exposed stubs; PEX is quieter, freeze-tolerant, and faster to install. We'll recommend per house, not per fashion.

Areas we serve

Free estimate

Let's walk your project.

Free on-site estimates. Straight answers on price, permits, and timeline — no runaround.

(213) 858-9161 Call or text — English y español.

Tell us about your project

We reply within one business day — usually faster.

No spam, no pressure. A licensed contractor reads every message.