A Ramona Fence Company That Builds It Right
Cornerstone Fence is a licensed, owner-run fencing contractor serving homes, ranches, and businesses across San Diego County.
Fences built the way they should be
Cornerstone Fence is run by Brian Fonseca out of Ramona. The name says what we care about most: a fence is only as good as what it's set on. That means the right hole depth, real concrete footings, and post spacing that keeps the line straight for years instead of months.
We install chain link, wood, vinyl, wrought iron, steel, and aluminum fencing, along with custom gates, handrails, and guardrails. Our work ranges from backyard privacy fences and pool enclosures to ranch perimeters on hillsides and slatted chain link around commercial yards.
We hold a California CSLB C-13 fencing license. Every job starts with an on-site measure and a written, itemized quote, and it ends with a walk of the full fence line together so you can see that every post is plumb and every gate latches.
What we stand for
Six standards we hold ourselves to on every project — big or small.
Licensed Work
CSLB C-13 licensed for fences, gates, and railings.
Straight Answers
Itemized quotes and honest advice on materials.
Solid Footings
Posts set deep in concrete, never shortcut.
Respect for Your Time
We show up when we say and keep you posted.
Clean Lines
Level rails, even spacing, and gates that swing true.
Local and Accountable
A Ramona business you can reach directly by phone.
A better service experience, by design
Generic promises are easy. We focus on the habits that actually make the difference.
Four steps from first call to final walkthrough
A clean, predictable process so you always know what's next.
Call or Request a Quote
Tell us what you're fencing and why: privacy, pets, livestock, pool safety, or security. We'll set a time to come out.
On-Site Measure
We measure the line, check slope and soil, mark gate locations, and talk through material options on the spot.
Written Quote
An itemized quote with footage, materials, gates, and old-fence removal. Free and no obligation.
Install & Walkthrough
We set posts, hang panels and gates, clean up, then walk the line with you and adjust anything that isn't right.
Local crew, serving your neighborhood
From Ramona and Julian to Poway, Escondido, and Rancho Bernardo: easy to reach and quick to schedule an on-site estimate.
Ready to work with a team that puts quality first?
Get a free, no-pressure estimate and see what a careful, service-first process looks like.