Name: Brownstone L&H
Address: Stanwood, Northwest Washington, 98292, WA
Telephone: 360-333-7738

Extending a Paver Patio in Mount Vernon, WA: Seamless Tie-In With a Year-Old Patio

Hardscape and Fence Services by Brownstone L&H

10-13-2026 – Brownstone L&H LLC

Extending a Paver Patio in Mount Vernon, WA: Seamless Tie-In With a Year-Old Patio

We extended a paver patio near Little Mountain in Mount Vernon, WA by 10 by 15 feet, tying it into a 10 by 12 foot patio we built for the same homeowner a year earlier. The result is one larger, level patio that looks like it was all built at once, finished in about 3 working days.

Project at a glance

– Location: Near Little Mountain, Mount Vernon, Skagit County, WA
– Scope: Paver patio extension tied into an existing patio, plus lawn restoration
– Original patio: 10 by 12 feet, built one year earlier
– Extension: 10 by 15 feet, for about 270 square feet in total
– Pavers: Belgard Mega-Lafitt textured three-piece pavers in Autumn, with a charcoal border
– Base: Geotextile fabric and 7 to 9 inches of open-grade clear chip
– Grade fix: One row of 8-inch wall block under the low edge
– Materials: Sourced from Northstar Stone Supply in Ferndale, WA
– Timeline: About 3 working days
– Typical cost for a similar patio: $7,000 to $15,000

Why she called us back

A year after we built her first patio, the homeowner called us back with two goals:
1. More space for family gatherings. The original patio worked well, but it was not big enough for everyone.
2. Less maintenance where water sat. The lawn next to the patio held standing water, which meant mud, soft ground, and a spot that was hard to mow or use.
– Extending the patio over that wet area solved both at once: more usable space, and a surface built to drain instead of a patch of soggy lawn.

How we extended the patio

1. Laser layout and excavation

We set up a laser level to match the finished height of the existing patio and set the grade for the new section. Then we removed 8 to 12 inches of soil across the extension area to make room for a full base.

2. Geotextile fabric

Fabric went down over the native soil first. It keeps the soil from mixing into the base rock and helps stop weeds from coming up over time.

3. Open-grade base in three lifts

We installed 7 to 9 inches of clear chip, an open-grade crushed rock with no fine material, and compacted it in three separate lifts. Compacting in layers gets the whole depth solid, not just the top.

Open-grade base matters most in a spot like this one, where water was already sitting. Water drains down through clear chip instead of staying in the base, which keeps the patio from settling or shifting through our wet winters.

4. A row of wall block to handle the slope

The yard drops off along one side. Before finishing the base, we set a single row of 8-inch retaining wall block along the low edge. The block holds the base in place and brings the patio up to finished grade, and the pavers run right over the top of it, so the wall is hidden under the patio edge.

With the block in place, we backfilled behind it with more clear chip and compacted it.

5. Screeding the bedding layer

We set screed bars and spread a clear chip paver bedding layer, then screeded it perfectly flat and level with the old patio.

6. Tying into the existing patio

This is the step that makes an extension look like one patio instead of two. We removed the existing charcoal border on the side where the new section meets the old one, so the field pavers could run straight from the original patio into the new area. Then we installed a new charcoal border around the outside of the full, larger patio.

Because we used the same Belgard Mega-Lafitt pavers in the same Autumn color, the new section blends into the original.

7. Washing and drying

We pressure washed the full patio, old and new together, and let it dry completely. Polymeric sand needs a fully dry surface and dry joints to set correctly.

9. Polymeric sand and lawn restoration

The next day we swept polymeric sand into the joints and set it with water. Then we brought in soil and seeded the lawn around the new patio edges so the yard was finished, not left as bare dirt.

How long it took:

The extension took about 3 working days from start to finish, including excavation, base, the wall row, pavers, polymeric sand, and lawn restoration.

What a patio extension like this costs:

A similar patio installation typically runs $7,000 to $15,000, depending on the size of the patio and the condition of the property. Adding lighting, premium pavers, or a raised patio can bring a project to $20,000 to $40,000.

For a full breakdown of what drives the price, see our [paver patio cost guide]

Common questions about extending a paver patio

Can you extend an existing paver patio?

Yes. The new section is excavated and based the same way as the original, set to the same height, and tied in by removing the border where the two meet so the pavers run continuously.

Will the new pavers match the old ones?

If the same paver and color are still available, they blend closely. Pavers can weather slightly over time, but pressure washing the whole patio together and sealing both sections the same way helps them look like one surface.

How do you make a patio extension level with the old patio?

We use a laser level to set the new base and bedding layer to the exact height of the existing patio before laying any pavers.

How much does it cost to extend a paver patio in Mount Vernon?

A similar patio typically runs $7,000 to $15,000 depending on size and site conditions. Lighting, premium materials, or a raised design can bring it to $20,000 to $40,000.

Can a patio fix standing water in the yard?

It can help a lot when it is built on an open-grade base. Clear chip lets water drain down through the base instead of sitting on the surface the way it does in compacted lawn.

How long does a patio extension take?

This 10 by 15 foot extension took about 3 working days.

Want to make your patio bigger?

If your patio feels too small for how you use it, an extension is often simpler than starting over, as long as the new section is matched and tied in properly. We will look at your existing patio, the grade, and any drainage issues, and tell you what it will take.

Brownstone L&H builds and extends paver patios in Mount Vernon, Burlington, Sedro-Woolley, Anacortes, and throughout Skagit, Whatcom, and Snohomish County. Call (360) 333-7738 or request a free estimate.

License NUmber

#BROWNL*753BW

Phone

360-333-7738

Brownstonelh@gmail.com