Trueform Hardscapes tiered retaining wall project on a Mission hillside
Mission

Hardscape & Landscape Contractor in Mission

Mission's hillsides demand slope engineering most contractors do not do. Trueform specializes in tiered walls, stormwater control, and rock shelf excavation.

Mission Hillside Builds Done Right

Mission is one of the most geographically challenging municipalities in the Fraser Valley for hardscape work. Much of the city is built into the hillsides north of the Fraser River, with lots that drop or rise significantly front to back. Soils vary from rocky glacial till in the upland neighborhoods to silty alluvium closer to the river. Properties often have mountain runoff that crosses the lot before reaching city drainage. And the municipal inspector knows exactly which contractors cut corners on slope work. We build here the right way or we do not build here at all.

The upland neighborhoods, including Cedar Valley, Silverdale, Mission Heights, and College Heights, sit on glacial till with frequent rock outcrops. Excavation here is slower and more expensive than on flat valley lots because you often hit a rock shelf 18 to 36 inches down. We plan for this in the quote, not as a change order, and we bring the right equipment (hydraulic breakers, rock buckets) to the first day of work. Tiered retaining walls are almost always the right answer in these neighborhoods, because a single tall wall creates too much surcharge and has a higher failure risk than two moderate walls on the same slope.

Down toward the Fraser River, in Hatzic, Ferndale, and Cherry Ridge, the soil changes to silty alluvium and the water table rises. These properties often sit on old river terraces with great views but tricky drainage. Our approach here is to grade water away from every hardscape surface before it reaches the structure and to use flexible base systems that can tolerate minor movement without cracking.

Mission also has one of the more active storm event histories in the region. The combination of upland runoff, steep terrain, and localized downpours means that every hardscape project needs an honest drainage plan. We integrate French drains, catch basins, and regrading into almost every Mission quote because skipping this step guarantees problems within two winters. The City of Mission building department is experienced with slope work and will flag designs that do not include drainage, so there is no shortcut.

Trueform Works Across All of Mission

Cedar ValleySilverdaleHatzicFerndaleMission HeightsCollege HeightsCherry RidgeWest HeightsMission CityHatzic PrairieStave Falls
Local Knowledge

Why Mission Is Different

Climate

Mission receives 1,700 to 1,900 mm of rainfall annually, more than Abbotsford or Langley, because of its position at the base of the Coast Mountains and the orographic lift effect. Upland neighborhoods see more freeze thaw cycles than the Fraser lowlands. Stormwater events are common from October to February.

Soil Conditions

Upland Mission (Cedar Valley, Silverdale, Mission Heights) sits on glacial till with frequent rock outcrops, often hitting bedrock within 18 to 36 inches. Hatzic, Ferndale, and the river flats are silty alluvium with a higher water table. Hatzic Prairie is organic lowland soil similar to Sumas Prairie in Abbotsford.

Permits & Bylaws

The District of Mission requires a building permit for retaining walls over 1.2 metres and often requires engineered drawings for any wall on a slope steeper than 30 percent. Hillside development permit areas impose additional requirements on excavation, tree removal, and stormwater control. Trueform handles all permits and engineering.

Trueform Tips

Assume every upland Mission project will hit rock. Budget for it in the quote, not as a surprise change order. Never skip the drainage plan in Mission, because runoff volumes are higher here than anywhere else we work. And in Hatzic Prairie, plan for slight settlement the same way we do on Abbotsford's Sumas Prairie.

Cedar Valley Hillside Terrace System

Cedar Valley, Mission

A Cedar Valley lot with a 2.8 metre grade drop across 14 metres of backyard. We excavated through a rock shelf with a hydraulic breaker, installed two Allan Block retaining walls with geogrid reinforcement and integrated French drains, built a 36 square metre natural stone patio on the upper terrace, and installed a granite tread staircase connecting the terraces. The final build turned a steep unusable slope into three distinct outdoor zones.

See More Mission Projects
Cedar Valley Hillside Terrace System, Trueform Hardscapes in Cedar Valley, Mission

Mission Project FAQs

Mission hillside projects are legitimately harder than flat lot projects. Excavation through rock shelves takes longer and requires specialized equipment. Slope work often requires engineered drawings and deeper base preparation. And drainage systems are larger and more complex because of higher runoff volumes. These are real costs, not markups, and we quote them transparently so there are no surprises.

For most residential hardscape projects, no. But if your wall exceeds 1.8 metres on a slope, if your project is inside a hillside development permit area, or if the city inspector flags slope concerns, yes. The District of Mission and Trueform both err on the side of engineering when there is any slope instability question. We coordinate with local geotechnical engineers as needed.

Yes, with proper engineering. Steep driveways in Cedar Valley, Silverdale, and Mission Heights need a deeper compacted base, higher strength pavers (typically 80mm), proper surface drainage (channel drains at the base of the slope), and slip resistant surface textures. We have built multiple steep driveways in Mission that perform well through winter ice events.

Mission gets significantly more rain than Abbotsford or Langley, especially in the upland neighborhoods. Excavation and base preparation cannot happen in saturated conditions because wet clay is impossible to compact properly, so we schedule Mission projects to target drier windows from April through October. Winter projects are possible but require tarping and temporary drainage.

For most Mission hillside projects we recommend Allan Block or Unilock segmental retaining walls with geogrid reinforcement. These systems are engineered for slope conditions and carry full manufacturer warranty when installed to spec. For walls over 1.8 metres or walls in unstable soils, we coordinate with a structural or geotechnical engineer.

Yes. We submit all building permit applications to the District of Mission on your behalf, coordinate engineering drawings when required, respond to inspector comments, and schedule inspections. You do not need to visit the permit office.

What Mission Homeowners Say

We had been told by two contractors that our slope was too steep for a usable backyard. Trueform designed a three terrace solution that added a patio, garden, and lawn. Worth every dollar.

Cedar Valley, Mission

The river side of our lot always flooded in November. Their drainage plan solved it on the first winter. I did not have to call them back once.

Hatzic, Mission

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