
Backyard & Outdoor Living in Stevenson Ranch
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 Stevenson Ranch properties
Stevenson Ranch is one of the West Ranch communities of unincorporated Los Angeles County, a master-planned neighborhood west of Interstate 5 and north of Pico Canyon Road that was built out in phases under a plan approved by the County. To the south, Pico Canyon holds Santa Clarita Woodlands State Park and the historic oil town of Mentryville, and the County's area plan notes significant stands of oak trees around West Ranch's developed areas. With no city government of its own, Stevenson Ranch takes its building permits from County Public Works and its zoning from County Title 22, and inside the Stevenson Ranch HOA an Architectural Committee must approve pools, spas, hardscape and landscaping in writing before work begins. Fire mapping sets much of the rest of the brief: about four in five single-family lots fall in a Very High Fire Hazard Severity Zone, which brings a County Fire landscape review into new structures and large additions and can narrow the ADU options on those lots.
Master-planned tract homes built out in phases, nearly all between 1987 and 2004 according to LA County Assessor records. Assessor parcel data puts the median single-family lot near 7,800 square feet, with the middle half between roughly 6,300 and 10,000 square feet, and most lots are zoned either RPD (Residential Planned Development) or R-1.
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 Stevenson Ranch: Stevenson Ranch is unincorporated, so building permits come from County Public Works through its Santa Clarita district office on Valencia Boulevard, and zoning follows County Title 22 rather than a city code. About four in five single-family lots fall in a Very High Fire Hazard Severity Zone on the current state maps; there, a new structure, an addition equal to at least half the existing square footage, or certain accessory structures over 120 square feet need a County Fire fuel modification plan approved before the building permit. Under Title 22 Section 22.140.640, a lot in a Very High Fire Hazard Severity Zone as depicted in the County General Plan can add only a state-exempt ADU, meaning a conversion of existing space or a detached unit of up to 800 square feet with four-foot side and rear setbacks, unless it has two separate, non-overlapping vehicular routes to a highway, each at least 24 feet wide, or fronts a highway with direct vehicle entry. Within the Stevenson Ranch HOA, pools, spas, hardscape, landscaping and patio covers also need written Architectural Committee approval before work starts.
Permit details checked September 2026 against LA County Planning, Los Angeles County Code and LA County. Rules change, so we confirm them again for your parcel.
What We Build
- HOA Architectural Committee submittals
- Fuel modification landscape plans
- Fire-zone ADU access and size review
- Geotechnical review in mapped landslide zones
- 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 Stevenson Ranch actually involves
Every city in Southern California builds differently. These are the things that change the scope, the schedule or the budget on Stevenson Ranch projects.
About four in five single-family lots are mapped Very High Fire Hazard Severity Zone and more than nine in ten sit in a fire hazard zone of some severity; where a fuel modification plan applies, its zones out to 30, 100 and 200 feet from each structure, or to the property line, govern planting and layout.
More than a quarter of single-family parcels fall inside a state-mapped earthquake-induced landslide zone and about one in ten inside a liquefaction zone on the Newhall and Oat Mountain quadrangles, so soils findings belong at the start of pool and structure design.
An oak at least eight inches in trunk diameter, measured four and a half feet above grade, has a County protected zone reaching five feet beyond the dripline or 15 feet from the trunk, whichever is greater; encroaching into it takes an Oak Tree Permit, and approved digging there can be limited to hand tools or small power equipment.
In any Fire Hazard Severity Zone a County ADU must sit at least 200 feet from publicly dedicated open space, although the rule still allows a unit of 800 square feet with four-foot side and rear setbacks, which matters on lots that back onto open space.
Investment
What this costs in Stevenson Ranch
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 Stevenson Ranch propertyHow We Build
Your Stevenson Ranch project, step by step
Site Review
We measure the yard, check drainage and grade, and find the constraints before design starts.
Design & 3D
You walk the whole yard in 3D, so layout and materials are settled before we build.
Plans & Permits
Structures, walls and electrical get drawn and permitted where the work requires it. In Stevenson Ranch that submittal goes to Los Angeles County Public Works, Building and Safety Division (Santa Clarita District Office).
Demo & Grading
Old surfaces come out, levels are set and drainage is corrected properly.
Build
Hardscape, structures, kitchen, features and lighting go in, sequenced by our own crews.
Planting & Handover
Planting, turf and final detail, then a full walkthrough of the finished yard.
Stevenson Ranch Questions
Common questions from Stevenson Ranch homeowners
Who issues the permits for this work in Stevenson Ranch?
Los Angeles County Public Works, Building and Safety Division (Santa Clarita District Office). Stevenson Ranch is unincorporated, so building permits come from County Public Works through its Santa Clarita district office on Valencia Boulevard, and zoning follows County Title 22 rather than a city code. About four in five single-family lots fall in a Very High Fire Hazard Severity Zone on the current state maps; there, a new structure, an addition equal to at least half the existing square footage, or certain accessory structures over 120 square feet need a County Fire fuel modification plan approved before the building permit. Under Title 22 Section 22.140.640, a lot in a Very High Fire Hazard Severity Zone as depicted in the County General Plan can add only a state-exempt ADU, meaning a conversion of existing space or a detached unit of up to 800 square feet with four-foot side and rear setbacks, unless it has two separate, non-overlapping vehicular routes to a highway, each at least 24 feet wide, or fronts a highway with direct vehicle entry. Within the Stevenson Ranch HOA, pools, spas, hardscape, landscaping and patio covers also need written Architectural Committee approval before work starts. 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 Stevenson Ranch different?
Master-planned tract homes built out in phases, nearly all between 1987 and 2004 according to LA County Assessor records. Assessor parcel data puts the median single-family lot near 7,800 square feet, with the middle half between roughly 6,300 and 10,000 square feet, and most lots are zoned either RPD (Residential Planned Development) or R-1. One local condition that shapes the work: About four in five single-family lots are mapped Very High Fire Hazard Severity Zone and more than nine in ten sit in a fire hazard zone of some severity; where a fuel modification plan applies, its zones out to 30, 100 and 200 feet from each structure, or to the property line, govern planting and layout.
Which parts of Stevenson Ranch do you work in?
All of it, including Westridge, Diamondhead, Marblehead and Pacific Colony. 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 Stevenson Ranch?
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.
More services in Stevenson Ranch
Stevenson Ranch Guides
Planning guides for Stevenson Ranch homeowners
Costs, materials and process notes from our own projects.
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Read guideIndoor-Outdoor Living Conversions in Southern California
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Read guideTarzana Outdoor Living: A Builder's Guide to South of the Boulevard Lots
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Read guidePorter Ranch Backyard Transformation: Wind, Slope and What It Costs
A full backyard transformation in Porter Ranch runs $95,000 to $280,000. Wind exposure, slope, HOA review and fire-zone material rules shape the design before anything about style enters the conversation.
Read guidePlanning a backyard or outdoor living project in Stevenson Ranch?
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