Clean & Inspect Your Home’s Exterior: A September Home Maintenance Tip

September may technically mark the beginning of fall, but Southern California homeowners know the warm weather isn’t necessarily going anywhere just yet.

That’s actually good news for your home maintenance list.

After months of sunshine, heat, dust, backyard gatherings, sprinklers, and everyday outdoor exposure, September is a great time to clean and inspect your home exterior.

For many homes in Cerritos, Buena Park, and throughout Orange and Los Angeles counties, that means checking stucco rather than traditional siding. Either way, a quick exterior inspection can help you spot cracks, deteriorating caulking, stains, or other problems while they’re still manageable.

Start With a Home Exterior Walk-Around

Before you start washing anything, walk around your property and take a good look at the exterior.

Check for:

• Cracks or chips in stucco
• Damaged or warped siding
• Peeling or deteriorated paint
• Cracked or missing caulking
• Staining or discoloration
• Mildew or organic growth
• Gaps around windows and doors
• Damage around trim and exterior penetrations

Pay particular attention to areas exposed to intense afternoon sun and places regularly hit by sprinklers.

Use Your Phone to Inspect Higher Areas

You don’t necessarily need to climb a ladder to get a better look.

Use your smartphone camera and zoom function to photograph higher areas of your home’s exterior. You may be surprised by how much detail you can see once you enlarge the photo.

This can be especially useful for checking areas near rooflines, second-story windows, eaves, trim, and other difficult-to-see locations.

Clean Away Summer Dirt and Grime

Once you’ve inspected the exterior, it’s time for a cleanup.

Dust and grime can accumulate over a long Southern California summer. Cleaning these surfaces can instantly freshen your home’s appearance.

However, the correct cleaning method depends on your exterior material.

Be Careful With Pressure Washing

A pressure washer can be useful on certain surfaces, but more pressure isn’t necessarily better.

Excessive pressure or improper technique can damage stucco, paint, wood, seals, and other exterior finishes. It can also force water into cracks or behind exterior materials.

For many surfaces, a garden hose, soft brush, mild appropriate cleaner, or lower-pressure washing method may be a safer choice.

Always follow the recommendations for your home’s specific exterior material.

Inspect Caulking Around Windows and Doors

September is also a good time to inspect exterior caulking.

Look closely around:

• Windows
• Exterior doors
• Trim
• Utility penetrations
• Pipes and vents
• Other sealed openings

Caulking can deteriorate, separate, or crack over time due to heat, sunlight, movement, and age.

Small gaps may allow moisture and pests into places they don’t belong.

Can You Replace Exterior Caulking Yourself?

Some minor caulking repairs are manageable DIY projects.

First, determine whether the joint is actually intended to be sealed. Remove deteriorated material as appropriate, clean the area, allow it to dry completely, and use an exterior-grade sealant that’s compatible with the surrounding materials.

Follow the product manufacturer’s application and curing instructions.

And don’t indiscriminately seal every opening you see. Some exterior assemblies are intentionally designed with drainage or ventilation openings.

Why September Is a Great Time for Home Exterior Maintenance

While much of the country may be preparing homes for freezing temperatures, our priorities are different.

A September exterior inspection can help Southern California homeowners:

• Wash away summer dust and grime
• Improve curb appeal
• Find stucco cracks
• Identify deteriorating caulking
• Look for moisture-related staining
• Spot sun and heat damage
• Catch maintenance issues before seasonal rain arrives

That makes this a particularly useful transition-season project for our area.

When Should You Call a Professional?

Some exterior problems are more than cosmetic.

Consider calling a qualified professional if you find significant stucco cracking, damaged siding, widespread deterioration, signs of water intrusion, substantial mildew or staining, or damage that keeps returning after repairs.

Professional cleaning may also make sense for large homes, difficult-to-access areas, or surfaces that require specialized equipment or techniques.

The original source for this maintenance tip estimated professional pressure washing at approximately $200 to $400, but current Southern California pricing can vary substantially based on home size, surface material, accessibility, and scope of work.

Get a current local estimate before budgeting for professional services.

Final Thoughts

September’s warm Southern California weather gives homeowners another opportunity to tackle exterior projects before the seasons begin to shift.

Walk around your home. Look closely at the stucco or siding, windows, doors, trim, and caulking. Then give appropriate surfaces a gentle cleaning to remove the remnants of summer.

It’s not just about making your house look good.

Regular exterior maintenance can help you spot small problems earlier, protect your property, and keep that all-important curb appeal looking its best.

Wash away summer—and give your home a fresh start for fall.

Frequently Asked Questions

Why should I clean my home exterior in September?

September’s warm Southern California weather makes it a convenient time to remove summer dust and grime while inspecting the exterior for cracks, deteriorating caulking, stains, and other maintenance issues.

Should I pressure wash stucco?

Use caution. Excessive pressure can damage some stucco finishes or force water into cracks and openings. Follow the recommendations for your particular exterior finish and consider gentler cleaning methods when appropriate.

What should I look for when inspecting my home exterior?

Look for stucco cracks, damaged siding, peeling paint, deteriorating caulking, stains, mildew, gaps around windows and doors, and signs of possible moisture intrusion.

Can I repair cracked exterior caulking myself?

Some small caulking repairs can be DIY-friendly. Make sure the joint should be sealed, prepare the surface correctly, and use an exterior-grade sealant compatible with the surrounding materials.

When should I call a professional for home exterior repairs?

Consider professional help for significant cracks, widespread deterioration, damaged siding, recurring moisture problems, difficult-to-access areas, or conditions you’re unsure how to repair correctly.