Patios and pool decks
Paver patios and pool decks in Northridge, CA
The postwar tracts here left people with real backyards. This is how to turn one into an outdoor room that handles a Valley summer and drains properly on flat ground.
Big lots, and what to do with them
Northridge grew in the 1950s and 1960s as single story ranch subdivisions on generous parcels. Devonshire Country Estates and Devonshire Highlands, postwar tracts with wide curving streets, are the clearest example, and the same pattern repeats through the grid between Nordhoff Street and Devonshire Street. The result is a lot of backyards with more space than the original builder ever paved.
That space is an opportunity and a trap. Pouring stone across all of it produces a hot, blank rectangle. The better move on a big Northridge lot is to define zones: a dining area sized to the table you actually own, a separate lounge or fire area, a path connecting them, and planting left between. Pavers make that easy because pattern, color, and border can change from zone to zone without a single control joint showing up.
Building for the heat
Inland Valley summers here are long and hot, with the kind of ultraviolet load that fades anything left in it. Three decisions do most of the work. Pick a lighter or medium multi tone blend, which stays cooler underfoot and disguises fade because the variation was designed in. Orient the main seating so the afternoon sun is behind it rather than in your eyes. And plan shade at the same time as the paving, because a pergola footing set during the base work costs a fraction of one cut in later.
Thermal movement matters too. A poured slab expands and contracts as one plate and eventually relieves that stress at a crack. A paver field has a sand joint every few inches, so the same movement disappears into the joints and never becomes a visible line.
Drainage when nothing slopes
Northridge sits on the gently sloping alluvial fan of the San Fernando Valley, and at the scale of a single backyard that reads as dead flat. Nothing drains on its own. Every patio here gets its fall built into the base, away from the house, verified with a level rather than assumed. Where the ground cannot fall 6 inches in the first 10 feet, section R401.3 of the California Residential Code has hard surfaces within 10 feet of the foundation slope at least 2 percent away from the building.
Two details are worth insisting on. Keep the finished paver surface below the slab line and any weep screed at the base of the wall, so water never has a path back toward the foundation. And where a patio is boxed in by a fence or a side yard with nowhere to shed, either run a channel drain to daylight or build the field permeable, letting water pass through open joints into a stone reservoir underneath. On level ground, permeable is not a green upgrade so much as a practical answer, and any paver company that works in Northridge should be raising it before you have to ask.
Base spec for a patio
- A compacted aggregate base under a patio. The CMHA application guide sets a minimum of 4 to 6 inches for walks and 6 to 8 inches for driveways, so a patio that only carries feet sits at the shallower end, compacted just as carefully, in lifts, and deeper on soft ground.
- Screeded bedding sand, a nominal 1 inch per the CMHA guide specification, flat and consistent, never thickened to hide a low spot in the base.
- Edge restraint on every open side. Without it the perimeter courses walk outward and the joints open up. This is a classic failure on a patio that was otherwise built well.
- Polymeric joint sand, swept and vibrated in, which locks the field together and keeps weeds and ants out of the joints.
Pool decks
Pool decks price higher than patios for a straightforward reason: cutting. The perimeter curve, the coping line, steps, a spa surround, and equipment access all generate saw work, and the tolerance is tighter because every cut is visible from the water. Choose a paver with a textured face for slip resistance, keep the color on the lighter side so bare feet can cross it in August, and set the field so splash out runs to a drain rather than back toward the house. Pavers also have a practical advantage around water: if the deck ever needs to come up for a plumbing repair, the stone lifts out and goes back down.
Patio size and what moves the price
Size comes first, but not in a straight line. Small patios carry a higher effective rate because mobilization, delivery, and setup do not shrink with the job. After size come the shape, the pattern and border, and any seat wall or drain. The contractor prices it in writing after measuring, and full detail is in the Northridge cost guide.
Under vehicle load the base spec changes. More on Northridge driveway construction.
Rear patios and pool decks are pictured rather than promised.
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How much does a 20x20 paver patio cost in Northridge?
It is priced per job, in writing, after the contractor measures, because no neutral source publishes installed patio prices. On a 20 by 20 patio the price moves with the paver line, the pattern, any contrasting border or seat wall, and the drainage detail. A simple square layout in a standard concrete paver sits at the low end, and a tumbled stone with a border and a built in seat wall moves it up.
How big should a patio be for a Northridge backyard?
The ranch lots here are forgiving, so size to the use rather than the fence line. Start with the table you own, add room to pull every chair out and walk behind it, and that is the dining zone. A lounge zone sits beside it. A very large patio reads better broken into two connected areas than as one large field of stone.
Do pavers get hot in summer?
Any hard surface does in a Valley summer. Concrete pavers in a light or medium blend run noticeably cooler underfoot than dark stone or a dark stained slab, and they shed heat faster once the sun moves off them. Color choice is the biggest lever you have on this.
Can a patio be built right up to the house?
Yes, and it should be built with the fall running away from it. On level Northridge ground that pitch is cut into the base by hand, and California Residential Code section R401.3 asks for at least 2 percent of slope on hard surfaces within 10 feet of the foundation where the ground cannot fall 6 inches in the first 10 feet. The finished surface is kept below the slab line and any weep screed so water leaves the house instead of collecting against the foundation.