Altadena, California
Landscape Construction in Altadena, CA
Grading, drainage, borders and planting. The unglamorous half that decides whether the pretty half lasts. Serving Altadena and the surrounding San Gabriel Valley.
The short answer
MKW Homes builds landscapes in Altadena, and the first thing to know is that your permit runs through Los Angeles County, not the City of Pasadena, because Altadena is unincorporated. The second is that most lots here slope toward the foothills, so drainage and retaining set your budget long before the plants do. Get the water moving away from the house first, and everything you build on top of it holds.
PermitsWho signs off in Altadena.
Permits for Altadena go through Los Angeles County Public Works, Building and Safety.
Local detail
Altadena is unincorporated Los Angeles County, not the City of Pasadena. Permits go through LA County, and the submittal process and review timeline are different. Contractors who work mostly inside Pasadena city limits get this wrong and it costs weeks.
Housing stockWhat we find in Altadena.
Craftsman and ranch homes on larger lots, many on sloping ground against the foothills.
Neighborhoods we work in
The buildLandscape Construction in Altadena.
What actually sets the price
On a sloped Altadena lot the grading and the water work decide your number more than the planting ever will. The real cost drivers are how much dirt has to move, how much drainage you run, whether you need retaining, the hardscape square footage, the size of the plants going in, and how many irrigation zones the yard honestly needs. A flat rear yard in Janes Village is a different job from a lot falling toward the foothills, where every foot of slope adds earthwork and pipe. We price the ground first and the pretty part second.
The material choices and the trade-offs
For drainage you are choosing between surface swales, French drains, and area drains tied to solid pipe. Perforated pipe collects groundwater, solid pipe carries it away, and mixing the two up is a common failure. For walls, poured concrete and CMU block take real height and load, while stacked stone and segmental block suit lower garden walls. Hardscape splits three ways: poured concrete is cheapest and cracks on a straight line, pavers flex with our clay and lift one at a time for repair, natural stone costs the most and lasts the longest.
Permits and the ground under Altadena
Because Altadena is unincorporated, your paperwork goes through Los Angeles County Public Works, Building and Safety, filed on the county EPIC-LA portal, not through Pasadena. A retaining wall is triggered by height measured from the bottom of the footing, not the dirt you see, and once it passes the county threshold it needs an engineer's design. The San Gabriel Valley sits on expansive clay that swells when wet and shrinks when dry, which pushes footings deeper and changes how we handle drainage and planting. We confirm the exact permit path with the county on the walk.
The order the work goes in
The sequence is not negotiable, because each step sits on the one before it. We grade and set drainage first, so water leaves the house on a positive slope. Then retaining, to hold the ground we just shaped. Then the hardscape: patios, paths, and driveways. Then irrigation, zoned by water need and sun exposure so a shady bed and a hot south wall never share a valve. Then planting, sized to the budget. Lighting goes in last. Do it in this order and nothing gets dug up twice.
How long it runs and what it feels like
A straightforward rear yard moves faster than a sloped lot that needs engineered retaining and real earthwork, and the county review adds calendar time before a shovel moves. During the build there is heavy equipment, exported soil, and a stretch where the yard is bare graded dirt and open trenches, which always looks worse right before it looks better. We stage the work so your access and utilities stay usable, and we give you the honest week-by-week rather than a finish date we cannot hold.
What it lasts and the upkeep it needs
Get the grading and drainage right and that part lasts for decades, because it is buried and does not wear. Hardscape life tracks the material: concrete and stone go the longest, pavers you can re-level as the clay moves under them. The living parts need tending. Irrigation heads drift out of alignment and clog, so they want a seasonal check, and our clay means you watch for settling near walls and drains after the first heavy winters. A yard graded to move water stays healthy. One that ponds fails slowly from the roots up.
The mistake we see most
The common one is planting on top of ground that was never graded to move water. The yard looks finished for a season, then the low spots pond, the beds stay soggy, the roots rot, and the fix means tearing out grown plants to do the grading that should have come first. On our clay it is worse, because saturated soil swells and shoves against footings and walls. Positive drainage away from the foundation is the single most valuable thing to get right and the most costly to fix later. So we do it first.
What to ask before you hire
Ask how they will move water off the lot and away from the house, and listen for a real answer about slope and pipe, not just plant names. Ask whether your walls need engineering and how they measure the height that triggers it. Ask if they pull the county permit through EPIC-LA or expect you to chase it. Ask how they zone irrigation and whether they separate sun from shade. Ask to see a sloped Altadena job they finished. And ask who is on site each day. The answers tell you fast who has built here before.
QuestionsLandscape Construction in Altadena.
Do I need a permit for landscaping in Altadena?
It depends what you build. Grading, retaining walls over the county's height trigger, and drainage work generally need a permit through Los Angeles County Public Works on the EPIC-LA portal, since Altadena is unincorporated. Simple planting usually does not. We confirm exactly what yours needs with the county on the walk.
Why does my sloped Altadena yard cost more than a flat one?
Because the ground work, not the plants, sets the price. A lot falling toward the foothills needs more earthwork, more drainage pipe, and often engineered retaining to hold the grade, all spent before anything green goes in. A flat yard skips most of that, so two identical plant lists can price very differently.
What is the best drainage for the clay soil here?
There is no single best, you match the method to the lot. Most Altadena yards use surface grading on top, area drains at the low points, and solid pipe to carry it out to the street. On our expansive clay the goal never changes: keep water moving away from the foundation and never let it sit.
How tall a retaining wall can I build without engineering?
The height is measured from the bottom of the footing, not the dirt you see, and once it passes the county's threshold it needs an engineer's design. We will not guess the number to sound confident. We measure from the footing on your lot and confirm the current trigger with Los Angeles County before we design the wall.
How long does a landscape build take in Altadena?
It depends on the slope, the earthwork, and whether the walls need engineering, plus county review time before work starts. A flat rear yard moves quickly, a hillside lot with retaining runs longer. We give you an honest week-by-week schedule after the walk rather than a date we cannot stand behind.
Can you fix a yard that floods or ponds after rain?
Usually, yes. Ponding almost always means the ground was never graded to move water, so we regrade for positive slope away from the house and add drains and pipe where the low spots collect. On Altadena's clay that is the difference between a yard that drains and one that stays soggy and kills plants.
See it builtReal landscape construction we finished.
ReviewsWhat clients say.
Hired Mike and his crew to redo our entire backyard and driveway. Removal of the asphalt and existing landscaping, running water lines and electrical, artificial grass, plant borders, a paver driveway, raised the patio gazebo, added a paver patio, landscaped borders, irrigation and outdoor lighting.
Teri CraftLocal Guide · 33 reviewsFrom start to finish the job was handled with the utmost professionalism and attention to detail. What stood out most was their communication. Mr. Ward kept me informed every step of the way.
Angela Adams5 reviewsMKW Homes just painted our home. We are very satisfied with the work. During the process everything was clean and organized.
Jake Baloian3 reviewsMike and his crew were great. They did a wonderful job on the stucco patching and painting, and we were very pleased with the results.
Jen B1 reviewHired Mike and his crew to redo our entire backyard and driveway. Removal of the asphalt and existing landscaping, running water lines and electrical, artificial grass, plant borders, a paver driveway, raised the patio gazebo, added a paver patio, landscaped borders, irrigation and outdoor lighting.
Teri CraftLocal Guide · 33 reviewsFrom start to finish the job was handled with the utmost professionalism and attention to detail. What stood out most was their communication. Mr. Ward kept me informed every step of the way.
Angela Adams5 reviewsMKW Homes just painted our home. We are very satisfied with the work. During the process everything was clean and organized.
Jake Baloian3 reviewsMike and his crew were great. They did a wonderful job on the stucco patching and painting, and we were very pleased with the results.
Jen B1 reviewNearby citiesLandscape Construction near Altadena.
Free estimatesIn Altadena.
Michael usually gets to the property the same week.