San Marcos has a mix of housing you don’t see everywhere: newer hillside homes in San Elijo Hills and Discovery Hills, established neighborhoods and older homes around Lake San Marcos, manufactured home communities, and plenty of rentals near Cal State San Marcos and Palomar College. New construction doesn’t mean termite-proof. We inspect homes, rentals and commercial buildings, identify drywood or subterranean activity, and treat it with a written plan.
Signs of Termites in San Marcos Homes
- Small piles of pellets (frass) below windowsills, door frames or attic beams, a sign of drywood termites
- Pencil-width mud tubes on the foundation, garage walls or crawlspace piers, a sign of subterranean termites
- Swarms of winged termites indoors or near lights, or piles of discarded wings on sills
- Wood that sounds hollow, or paint and trim that bubbles or blisters
- Doors and windows that start to stick for no clear reason
Drywood vs. Subterranean Termites in San Marcos
Subterranean termites are common in San Marcos where yards are irrigated and slopes are planted. On hillside lots, drainage often pushes water toward the foundation, and we find mud tubes along slab edges, garage walls and expansion joints. Newer homes are often built with treated lumber, but termites can still travel over it through cracks and gaps.
Drywood termites show up in attics, eaves, wood trim and patio covers, and in the older homes and manufactured homes around Lake San Marcos. In manufactured homes we pay close attention to skirting, wood framing underneath and areas near the water heater.
Our Termite Control Process in San Marcos
- Full inspection — We check the attic, garage, eaves, crawlspace or slab edges, and exterior wood for live activity, damage and conditions that invite termites.
- Species identification — Drywood and subterranean termites are treated differently, so we confirm which one you have (some homes have both).
- Treatment plan — Depending on the species and how far the activity has spread, that can be localized spot treatment, structural wood treatment or a soil treatment around the foundation. If the activity is too widespread for local treatment, we explain whole-structure options plainly.
- Written report — You get a clear summary of what we found, what we treated and any repairs or moisture fixes we recommend.
- Follow-up — We recheck at agreed intervals to confirm the treatment is holding.
Termite Inspections for Selling or Buying in San Marcos
Most San Marcos home sales include a Wood Destroying Organism (WDO) inspection. The report follows the format set by California’s Structural Pest Control Board and sorts findings into Section 1 (active infestation or damage, which lenders usually want fixed before closing) and Section 2 (conditions likely to lead to an infestation, such as earth-to-wood contact or moisture). For rentals and investment properties, a clear report helps landlords plan repairs and keep records between tenants. See our real estate termite inspection page for how the report works.
Termite Prevention Tips for San Marcos
- Make sure slope drainage and downspouts carry water away from the foundation
- Seal cracks in slabs and gaps where pipes enter the house
- Keep mulch and soil below the stucco line, and wood off the ground
- In manufactured homes, keep the area under the home dry and the skirting intact
- Landlords: schedule inspections between tenants so problems are caught early
Areas We Serve in San Marcos
We provide termite control across San Marcos, including San Elijo Hills, Discovery Hills, Lake San Marcos, Santa Fe Hills, Richland and the neighborhoods around Cal State San Marcos, in zip codes 92069 and 92078. We also service commercial properties in San Marcos. We also cover termite control in Vista and handle general pest control through our San Marcos pest control page.
Frequently Asked Questions
My San Marcos home is newer. Do I still need termite inspections?
Yes. Treated lumber and slab construction help, but subterranean termites can still enter through slab cracks, expansion joints and plumbing gaps, and drywood termites can fly into attics and eaves.
Do you treat termites in manufactured homes?
Yes. We inspect the framing, skirting and underside of manufactured homes, which is where activity is usually hidden.
Do you handle termite inspections for rentals and commercial buildings in San Marcos?
Yes. We work with landlords, property managers and business owners and provide written reports for your records.
How can I tell if termites are active or old?
Fresh pellets, rebuilt mud tubes and swarmers mean active termites. Old damage with no new signs may be from a past infestation, and an inspection will confirm which it is.
Seeing pellets, wings or mud tubes in San Marcos? Call today for a termite inspection and a clear, written plan.