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Estate backyard with a pool, a wide lawn and lounge seating
Ontario, California

Backyard & Outdoor Living in Ontario

Full backyard transformations, pavers, outdoor kitchens, fire features, shade structures and turf. Designed, permitted and built by our own crews.

Backyard & Outdoor Living built for Ontario properties

George and William B. Chaffey founded Ontario in 1882 as an irrigation colony, and its backbone was Euclid Avenue, a boulevard of twin roadways divided by a central mall that rises on a long, easy incline from the Southern Pacific tracks toward the mouth of San Antonio Canyon. The older city holds eight designated historic districts, where Craftsman bungalows stand near Mediterranean, Tudor and Victorian houses. To the south, the 13-square-mile Ontario Ranch occupies land the city annexed in 1999 from the former San Bernardino County Agricultural Preserve, where dairy farms had shaped the landscape since the early 1900s and are now giving way to master-planned neighborhoods. Beneath most of the city lies alluvial sand that the Safety Element treats as a wind-related hazard, so a backyard plan here weighs historic review, dust and wind during excavation, and exactly where a pool, its barrier fence and an ADU may sit on the lot.

Two eras share the city: the Chaffey brothers' original subdivision pattern, still intact around the historic downtown and Euclid Avenue, with early tracts such as College Park, subdivided into 48 lots in 1914, and Armsley Square, laid out in 1924, and Ontario Ranch to the south, where former dairy properties are being converted to master-planned neighborhoods. Development Code Table 6.01-1 sets the minimum traditional single-family lot at 18,000 square feet in the AR-2 district, 10,000 in RE-2 and RE-4, and 7,200 in LDR-5.

We are a design-build team, which means the people who draw your project are the people who build it. Design, engineering, permits and construction run through one project manager and our own crews, so nothing gets lost in a handoff between a salesperson and a subcontractor. We are licensed, bonded and insured, CSLB license #1119054.

Permits in Ontario: Under the Development Code's residential standards, a pool, spa or pond 1.5 feet deep or more cannot be built in a front yard, must sit at least 3 feet from side and rear property lines and must be enclosed by a decorative nonclimbable fence or wall at least 5 feet high, while diving boards, slides, waterfalls and decorative rockscapes need at least 5 feet from side and rear lines. ADU applications go to the Building Department electronically through the city's Citizen Portal Access, and the city's ADU handout caps a detached unit at 850 square feet for a studio or one bedroom and 1,000 square feet for two or more, generally at 16 feet tall, with 4-foot side and rear setbacks and 6 feet of separation between detached structures. Exterior alterations to historic buildings, including homes in the city's eight designated historic districts, need a Certificate of Appropriateness reviewed by Planning staff, the Historic Preservation Subcommittee and the Historic Preservation Commission, or a Planning waiver for minor alterations.

Permit details checked September 2026 against City of Ontario. Rules change, so we confirm them again for your parcel.

What We Build

  • Pool setbacks and 5-foot barrier fencing
  • Certificate of Appropriateness review in historic districts
  • Wind and dust control during excavation
  • Detached ADU sizing and 6-foot structure separation
  • Full backyard transformations
  • Paver patios, driveways and walkways
  • Outdoor kitchens and BBQ islands
  • Pergolas, patio covers and shade structures
  • Fire pits, fire tables and fireplaces
  • Retaining walls and seat walls
  • Artificial turf and drought-tolerant planting
  • Drainage correction and grading
  • Landscape and architectural lighting
  • Front yard and curb appeal remodels

Local Conditions

What building in Ontario actually involves

Every city in Southern California builds differently. These are the things that change the scope, the schedule or the budget on Ontario projects.

01

The Safety Element describes the alluvial sand beneath most of Ontario as very susceptible to erosion, with strong winds driving it onto property, and its policies require dust-control best management practices on all excavation and grading and prohibit excavation and grading during strong wind conditions as defined by the Building Code, which brings the wind forecast into any dig schedule.

02

Because of the local topography and the nearby Cajon Pass, the Safety Element names Santa Ana winds as by far the city's greatest fire hazard, with increased risk in older portions of Ontario, although its 2025 CAL FIRE-based map shows no Fire Hazard Severity Zone inside city limits.

03

Much of the central and western city, roughly from Fourth Street south to Riverside Drive and west of Haven Avenue, lies inside the Safety Element's mapped zone of subsidence due to groundwater pumping, liquefaction is also listed among local hazards, and the city follows state guidelines and the California Building Code to decide when a project needs a geotechnical investigation.

04

Properties inside the Airport Influence Area of the LA/Ontario International Airport Land Use Compatibility Plan are subject to that plan's requirements under the Development Code, a check worth making alongside zoning before an addition or ADU is designed.

Areas we serve in Ontario:College ParkArmsley SquareRosewood CourtEl Morado CourtEuclid AvenueOntario Ranch

Investment

What this costs in Ontario

Real Southern California ranges, not a teaser number. Every project is priced line by line after we have seen the site.

Full backyard transformation

$50,000 to $250,000+

What moves it: how much hardscape is involved, whether a pool or outdoor kitchen is included, grading and retaining, and the level of lighting and planting

Paver patio and hardscape

from about $13,000

What moves it: square footage, paver type, base preparation, drainage, and any steps or retaining involved

Outdoor kitchen and BBQ island

$10,000 to $50,000+

What moves it: counter length, appliance package, countertop material, and whether gas, water and power need to be run a long distance

Pergola and shade structure

from about $9,500

What moves it: span, material (wood, aluminum or louvered), footing requirements, and integrated lighting or heating

Artificial turf

from about $9,900

What moves it: area, turf grade, base depth, drainage, and any pet-specific infill

Your number depends on your lot, your access and your finishes. We walk the site, then price every line so you can see exactly where the budget goes.

Get a line-item price for your Ontario property

How We Build

Your Ontario project, step by step

01

Site Review

We measure the yard, check drainage and grade, and find the constraints before design starts.

02

Design & 3D

You walk the whole yard in 3D, so layout and materials are settled before we build.

03

Plans & Permits

Structures, walls and electrical get drawn and permitted where the work requires it. In Ontario that submittal goes to City of Ontario Community Development, Building Department.

04

Demo & Grading

Old surfaces come out, levels are set and drainage is corrected properly.

05

Build

Hardscape, structures, kitchen, features and lighting go in, sequenced by our own crews.

06

Planting & Handover

Planting, turf and final detail, then a full walkthrough of the finished yard.

Ontario Questions

Common questions from Ontario homeowners

Who issues the permits for this work in Ontario?

City of Ontario Community Development, Building Department. Under the Development Code's residential standards, a pool, spa or pond 1.5 feet deep or more cannot be built in a front yard, must sit at least 3 feet from side and rear property lines and must be enclosed by a decorative nonclimbable fence or wall at least 5 feet high, while diving boards, slides, waterfalls and decorative rockscapes need at least 5 feet from side and rear lines. ADU applications go to the Building Department electronically through the city's Citizen Portal Access, and the city's ADU handout caps a detached unit at 850 square feet for a studio or one bedroom and 1,000 square feet for two or more, generally at 16 feet tall, with 4-foot side and rear setbacks and 6 feet of separation between detached structures. Exterior alterations to historic buildings, including homes in the city's eight designated historic districts, need a Certificate of Appropriateness reviewed by Planning staff, the Historic Preservation Subcommittee and the Historic Preservation Commission, or a Planning waiver for minor alterations. We prepare the drawings, make the submittal and handle plan-check corrections ourselves, so you are not the one chasing plan check.

What makes building in Ontario different?

Two eras share the city: the Chaffey brothers' original subdivision pattern, still intact around the historic downtown and Euclid Avenue, with early tracts such as College Park, subdivided into 48 lots in 1914, and Armsley Square, laid out in 1924, and Ontario Ranch to the south, where former dairy properties are being converted to master-planned neighborhoods. Development Code Table 6.01-1 sets the minimum traditional single-family lot at 18,000 square feet in the AR-2 district, 10,000 in RE-2 and RE-4, and 7,200 in LDR-5. One local condition that shapes the work: The Safety Element describes the alluvial sand beneath most of Ontario as very susceptible to erosion, with strong winds driving it onto property, and its policies require dust-control best management practices on all excavation and grading and prohibit excavation and grading during strong wind conditions as defined by the Building Code, which brings the wind forecast into any dig schedule.

Which parts of Ontario do you work in?

All of it, including College Park, Armsley Square, Rosewood Court and El Morado Court. Our crews run every job out of our Cahuenga Pass base in Los Angeles, with our own people on site.

What does a backyard or outdoor living project cost in Ontario?

Full backyard transformation: generally $50,000 to $250,000+ across Southern California. What moves it is how much hardscape is involved, whether a pool or outdoor kitchen is included, grading and retaining, and the level of lighting and planting. We give line-item pricing after seeing the site rather than quoting a number over the phone.

How long does a backyard remodel take?

A patio and turf refresh often finishes in three to five weeks. A full transformation with hardscape, an outdoor kitchen, structures and lighting typically runs ten to sixteen weeks, and longer if a pool is part of the same phase.

Pavers or poured concrete?

Pavers cost more up front but flex with ground movement instead of cracking, and individual units can be lifted and replaced. Poured concrete is cheaper initially, but a crack means cutting out and repouring a section that rarely matches. On most Southern California soil we recommend pavers for anything you will look at every day.

Can you fix drainage at the same time?

Yes, and on most projects we insist on it. Correcting grade and adding proper drainage while the yard is already open is far cheaper than retrofitting it after new hardscape is down.

Do you handle the whole yard in one project?

Yes. Design, permits, hardscape, structures, kitchen, lighting and planting run through one team and one project manager, so nothing gets lost between trades.

Planning a backyard or outdoor living project in Ontario?

Sit down with your project manager, go through the details, and get an accurate estimate for your property. We call you back within one business day.

Licensed, bonded & insured · CSLB license #1119054