
Full Backyard Project in Mill Valley
WDC coordinates landscape and hardscape as part of whole-home construction projects in Mill Valley — driveway reconstruction, retaining walls, outdoor living structures, pool coordination, and exterior drainage — managed under a single project scope. Exterior work in Mill Valley often carries its own permit requirements, particularly for properties near the hillsides. We manage all of it under the same accountability structure as interior renovation.



Exterior Scope in Mill Valley
- Retaining walls — structural walls over 4 feet require engineer-stamped drawings and the City of Mill Valley Building Division permits; hillside properties above Blithedale Avenue frequently require retaining work as part of any grading project
- Grading and drainage — SF County stormwater requirements apply to grading work; proper drainage design prevents foundation and hillside issues on Valley lots
- Driveways and gates — driveway reconstruction and motorized gate installation require permits; curb cut changes require Public Works coordination
- Pool and spa — pool permits through the City of Mill Valley Building Division; fencing and barrier compliance per California code
- Fire-zone landscaping — properties in or adjacent to fire zones must comply with SF County Fire’s brush clearance and defensible space requirements; plant selection and spacing are regulatory items for hillside properties
- Outdoor structures — pergolas, covered patios, and outdoor kitchens over a certain size require building permits; WDC handles permit coordination
The flat valley lot rebuilt as a second floor plan.
The Mill Valley lot is flat and forgiving — the design problem is program, not grade. WDC builds outdoor architecture under the City of Mill Valley Building Division hardscape permit, with planting beds, decomposed-granite paths, and Cor-Ten edging that hold up to dry valley summers and warm dry light.

Exterior Work as Part of a Full Home Project
Coordinating interior and exterior renovation under one contract and schedule is more efficient in Mill Valley than running separate projects — particularly when grading, drainage, and retaining wall work is involved. One mobilization, one permit process, one construction timeline.
Frequently Asked Questions
What exterior work requires permits in Mill Valley?
Retaining walls over 4 feet, grading over a certain volume, pools and spas, structural shade structures, motorized gates, and driveway curb cuts all require the City of Mill Valley Building Division or Public Works permits. WDC identifies all permit requirements during feasibility.
Does fire zone status affect our landscaping?
Yes. Properties in Mill Valley’ hillside areas that fall within SF’s Very High Fire Hazard Severity Zone are subject to defensible space requirements — 100 feet of clearance grading, specific plant selection, and spacing rules managed by SF County Fire. WDC identifies fire zone status and designs exterior scope accordingly.
Exterior Renovation in Mill Valley
Interior and exterior work together is always more efficient. If your project includes both, a consultation with WDC will show you what a coordinated scope delivers.
Request a consultation(415) 416-5494