Carlsbad Concrete Group ranks as the North County coast's trusted specialist in add-on concrete for newer homes, specializing in ADU slab foundations, driveway overlays, and side-yard RV pads. We offer stamped patios and walkways that tie into builder flatwork.
Get a free concrete estimate
Our team provides permit-ready footings and slabs, delivering more usable space for homes and clean, level pads for both residential and commercial projects. Backed by 11 years in business and our 1-year written workmanship warranty, we have finished over 1,460 projects, from a resurfaced 2-car driveway to a 780 sq ft ADU slab.
From under-slab plumbing checks to the final sealed overlay, our team handles every detail. Serving Harmony Grove and neighboring Elfin Forest, Rancho Santa Fe and Lake San Marcos, we book inspections ahead so framing crews are never waiting on us.
Request a free estimate, and our estate location manager will measure your Harmony Grove lot and talk through the plan.
Jason, Harmony Grove Village, Harmony Grove
A detached ADU planned at the back of a newer lot, with plumbing set before the pour
Emily, Harmony Grove Village, Harmony Grove
A sound but stained and scaled driveway on a 2010s home
Investment and duration figures are estimates. Your written quote sets the final price and schedule.
What you can hold us to
Jason in Harmony Grove Village planned a detached ADU at the back of a newer lot, with plumbing set before the pour. We poured a 780 sq ft ADU slab as a slab-on-grade with thickened footings and a vapor barrier, to the engineer's plan, with the inspector booked before the truck, an estimated $9,200 to $12,800 job over an estimated 4 to 7 days, and the slab was signed off first time and ready for framing the next week.
Emily, also in Harmony Grove Village, had a sound but stained and scaled driveway on a 2010s home. Instead of a full tear-out we ground the surface, patched the scaled spots and laid a polymer-modified overlay with a light broom texture over the 520 sq ft 2-car driveway, an estimated $2,100 to $2,900 project that took an estimated 1 to 2 days, and the drive now has a clean, even surface without demolition.
Most Harmony Grove concrete work is addition, not replacement. Sixty-four percent of the homes here were built in the 2010s, so the builder drives and walks are young and usually sound, and owners are adding what the builder left out: an ADU, a covered patio, an RV pad or a wider side yard. The job is to tie new concrete into existing slabs at the same height and slope, with a clean joint between them.
Heat is the Harmony Grove weather factor. The village sits about 719 ft up and inland, with dry heat rather than coastal fog, so fresh concrete loses water fast on a summer afternoon. We pour early, keep the slab wet while it cures, and cut joints the same day so shrinkage cracks follow the lines.
Harmony Grove concrete is typically estimated per project, and footing depth, plumbing coordination and finish move the price most. An ADU or addition slab foundation is estimated at roughly $3,600 to $14,000 for about 600 to 1,000 sq ft, and a driveway resurfacing overlay typically runs $1,200 to $2,900.
| Harmony Grove job | Est. investment | Est. time on site |
|---|---|---|
| ADU or addition slab foundation | Est. $3,600 to $14,000 per project | Est. 3 to 7 days |
| Driveway resurfacing overlay | Est. $1,200 to $2,900 per project | Est. 1 to 3 days |
| RV pad or side-yard slab | Est. $2,400 to $8,400 per project | Est. 2 to 3 days |
| Stamped or colored patio | Est. $3,200 to $7,600 per project | Est. 2 to 4 days |
| Walkway or garden path | Est. $1,400 to $3,400 per project | Est. 1 to 2 days |
An ADU slab lands higher in its range when the engineer calls for thicker footings, and an overlay only makes sense when the slab under it is sound. Plain broom-finish concrete typically runs $6 to $13 per sq ft installed on a Harmony Grove patio or walk, and stamped concrete typically runs $8 to $19 per sq ft installed when the owner wants color and pattern.
Harmony Grove prices shown here are estimates and could change once plans and the site are reviewed. Your written quote sets the final price and the pour schedule, including the inspection date.
New patios usually match the builder's broom-finished flatwork or step up to integral color on stamped and decorative concrete patios, and a worn but sound drive is a candidate for concrete resurfacing and overlays rather than demolition.
Driveway approaches, retaining walls and foundations are permitted; we pull the permit and book the inspection. Every quote is itemized, naming the tear-out, base, reinforcement, finish and joint layout. Each Harmony Grove slab or overlay carries our 1-year written workmanship warranty from its pour date.
We pour throughout Harmony Grove Village and the older lots around it, and the same crews work Elfin Forest, Lake San Marcos and Rancho Santa Fe. Every community is on our concrete service areas list.
ADU builds start with ADU and addition foundations, and owners with a trailer or boat add an RV pad or side-yard slab along the garage.
An ADU or addition slab is estimated at roughly $3,600 to $14,000, and Jason's 780 sq ft slab came in at an estimated $9,200 to $12,800; your written quote sets the final price.
Yes, when the slab is sound, a polymer-modified overlay like Emily's restores the surface without demolition.
Most ADU slabs take an estimated 3 to 7 days on site, plus the inspection before the pour.
We set new slabs at the same height and slope and match the broom texture, with a clean joint between old and new.
Yes, an ADU foundation is permitted work, and we pull the permit and book the inspection.
Harmony Grove slabs are typically poured 1 to 3 weeks after signing, plus the permit time an ADU needs.
A crew of 3 to 5 is on site on pour day, with the finishing foreman on every pour.
Call today or send the form, and we will measure your Harmony Grove lot and price the slab, patio or overlay in writing.
Your local contact
Names, photos and stories are on our about page.
Location manager covering Harmony Grove
Runs the Harmony Grove schedule from the first site visit to install day.
Where we work
Call us or send the form, and we will book a site walk and measure the job.
Calls only, we do not receive text messages.
