How Much Does Stamped Concrete Patio Cost in Mill Valley, CA? (2026)

Average Cost

$539,172–$800,163

Materials

$418,775–$621,600

Labor (North Bay)

$2,453–$3,527

Labor rates in North Bay are +18% compared to Sacramento Metro baseline.

Stamped concrete patios use specialized stamps and color hardeners to create the appearance of natural stone, brick, slate, or wood plank at a fraction of the cost. The process includes full site preparation, gravel base, forming, pouring colored concrete, applying release agent, stamping the pattern while concrete is still workable, detailing joints, and sealing. Stamped concrete is a popular upgrade in NorCal outdoor living spaces and adds significant curb appeal.

NorCal UV exposure can fade stamped concrete color faster — invest in UV-stable sealers and plan for resealing every 2–3 years.

Mill Valley is located in Marin County (North Bay). Affluent wooded community at the base of Mount Tamalpais with redwood-surrounded homes. The local utility provider is PG&E.

Cost Calculator

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City

Square feet

Materials Included

Ready-mix concrete (4000 PSI)1750 cubic yard

$245,000–$323,750

Color hardener (broadcast)70000 pound

$31,500–$59,500

Stamping release agent (powder)17500 pound

$10,500–$19,250

High-gloss acrylic sealer1400 gallon

$49,000–$84,000

Crushed gravel base1400 cubic yard

$56,000–$91,000

Form lumber and stakes31500 linear foot

$26,775–$44,100

Labor(North Bay +18%)

Decorative concrete specialist21h @ $65–$94/hr

$1,363–$1,982

Concrete finisher14h @ $53–$77/hr

$743–$1,074

General laborer10.5h @ $33–$45/hr

$347–$471

Contractor Markup28%

0%Avg 30%100%

Materials

$418,775–$621,600

Labor

$2,453–$3,527

Markup

$117,944–$175,036

Estimated Total Cost

$539,172 – $800,163

$1,540–$2,286 per unit

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Project Timeline

Site preparation

1 day

Excavate, grade for drainage, compact gravel base, and set forms.

Pour & color application

1 day

Pour concrete, apply integral color or broadcast color hardener evenly across the surface.

Stamping

Same day as pour

Apply release agent and press stamp mats into wet concrete in sequence to create pattern.

Detail work & washing

Next day

Touch up edges and joints, wash off excess release agent, repair any imperfections.

Sealing & curing

2–5 days

Apply two coats of acrylic sealer after concrete has cured sufficiently. Avoid traffic for 3 days.

Materials Breakdown

Material	Qty	Unit	Unit Cost	Total
Ready-mix concrete (4000 PSI)	1750	cubic yard	$140–$185	$245,000–$323,750
Color hardener (broadcast)	70000	pound	$0.45–$0.85	$31,500–$59,500
Stamping release agent (powder)	17500	pound	$0.6–$1.1	$10,500–$19,250
High-gloss acrylic sealer	1400	gallon	$35–$60	$49,000–$84,000
Crushed gravel base	1400	cubic yard	$40–$65	$56,000–$91,000
Form lumber and stakes	31500	linear foot	$0.85–$1.4	$26,775–$44,100

Stamped Concrete Patio in Mill Valley — FAQ

How much more does stamped concrete cost than regular concrete?+

Stamped concrete typically costs $12–$22 per square foot compared to $8–$15 for standard broom-finish, adding roughly 40–60% to the base cost for the decorative finish.

How often do I need to reseal stamped concrete?+

Reseal every 2–3 years to maintain color vibrancy and surface protection. In NorCal's sunny climate, UV-resistant sealers are recommended.

Is stamped concrete slippery when wet?+

It can be. Adding a non-slip additive to the final sealer coat or choosing a textured stamp pattern reduces slip risk, especially around pools.

What patterns are most popular in Sacramento?+

Ashlar slate, random stone, and herringbone brick are the most requested patterns in the Sacramento area. Wood plank patterns are gaining popularity.