Reliable Building Maintenance & Commercial Construction in El Cajon

Providing high-capacity janitorial, facility engineering, and general contracting for El Cajon’s business parks, retail centers, and HOAs. Expert solutions that stand up to the East County heat.

A+ BBB Rated | Licensed General Contractor #724136 | License #B724136 | Certified Landscape Irrigation Auditors

We are El Cajon’s preferred janitorial & commercial service company.

With over 36 years of experience, we’ve been offering unparalleled customer service and a vast array of janitorial and building maintenance services and contracts for commercial, industrial and residential customers in El Cajon, and all San Diego areas.

Our customers rely on McKowski’s Maintenance Systems for our premier level of janitorial & commercial cleaning services

Our Janitorial & Maintenance Solutions in El Cajon

El Cajon properties deal with extreme temperatures and sun damage. Position yourself as the expert who knows how to mitigate these specific inland issues.

  • Heat-Resistant Exterior Maintenance: “The East County sun is brutal on paint and asphalt. We use high-UV-rated coatings and proactive asphalt sealing to prevent cracking and fading, saving you thousands in long-term replacement costs.”

  • Industrial & Retail Janitorial Powerhouse: “With El Cajon being a hub for commerce and manufacturing, we offer heavy-duty janitorial services and porter contracts designed for high-traffic environments and large-scale facilities.”

  • Water-Wise Landscaping & Irrigation: “We help El Cajon properties stay green without breaking the bank. Our certified irrigation auditors design drought-tolerant landscapes that thrive in the inland climate while complying with local water regulations.”

  • Asphalt & Concrete Safety: “High temperatures can accelerate the degradation of parking lots. We specialize in cold patching, striping, and ADA-compliant concrete repairs to keep your El Cajon business park safe and accessible.”

Janitorial Services

Janitorial Maintenance Contracts

Porter Services Contracts

Complete Carpet Cleaning

Hard Floor Care and restoration

Electro Static Dissipative (ESD) Flooring

Consulting

Commercial Maintenance Services

Painting

Drywall Patching & Repair

Electrical

Plumbing

Welding

Concrete Repairs

Monthly Maintenance Contracts

General Building Programs

Landscape Maintenance

Landscape Irrigation & Plant Installation

Landscape Development & Planning

Consulting

Why Choose Us

The Best Commercial Maintenance Option in El Cajon

teamwork

In-House Team

Unlike other firms, our staff is in-house. This means better quality control and lower costs for you.

experience

40+ Years of Experience

We’ve been serving San Diego County since 1979. We aren't a 'fly-by-night' operation.

solutions

Comprehensive Solutions

One call handles it all—from a leaky faucet to a full-scale remodel.

professional

Professional Staff

Our maintenance team is geared to assist production and manufacturing facilities

quality

Quality Work

We pride ourselves in our work defined by unparalleled customer service and employee satisfaction

save money

Saves You Money

All of our employees are in-house, which allow us to pass the savings to our clients

Proudly Rated 5 Stars By Our Clients

See what our customers are saying about us on Google, Facebook & Yelp – consistently rated 5 stars for quality and service

Ready to protect your property in El Cajon?

Don’t wait for "deferred maintenance" to become an expensive emergency. Whether you need a one-time repair or a long-term janitorial contract, McKowski’s Maintenance Systems is here to help.

What Our Clients Say

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