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BSR Constructions LLC · Seattle, WA

Concrete Estimator

Universal pricing for driveways, patios, walkways, slabs, footings.
1

Project Type

2

Areas to Pour

TIP: Enter each section (Ej: 7×90, 5×140). Yardage = (L×W×T)/27. 10% waste built in. Need to measure? See Measure tab →
3

Finish Type

4

Demo / Tear-Out

Include demo
Tear out existing concrete + haul to recycling
Cost: $0
5

Extras

Gravel base
Slope correction or new install (min 4" compacted)
Tree root work
Shave roots where they lifted concrete
Decorative score lines
Cuadritos / design cuts
Rebar / wire mesh
Optional for sidewalks, recommended for driveways
6

Equipment Rentals

Mini excavator
Walkways, small slabs, tight access
Cost: $0
Standard excavator
Driveways, big jobs, multi-day digs
Cost: $0
Dump trailer
Haul demo / debris
Cost: $0
Equipment delivery
Round trip per machine
Cost: $0
7

Pricing Settings

BSR: Concrete $280/yd, $600/truck (10yd capacity). Markup applies to demo + equipment cost when passed to customer.
★

Custom Materials

USE WHEN: Customer picks premium fixtures, special materials, or anything beyond standard pricing. Adds to cost, applies markup to charge.
Estimate Breakdown
Total sq ft0
Total yards (w/ 10% waste)0.00 yd
Trucks needed0
Costs (Your Side)
Concrete material$0
Truck delivery$0
Demo labor + dump$0
Gravel base material$0
Tree root work$0
Score line labor$0
Rebar / mesh material$0
Equipment rentals$0
Hard Costs$0
Charge to Customer
Finish labor (broom)$0
Demo charge$0
Gravel base charge$0
Tree root work$0
Score lines$0
Rebar / mesh install$0
Equipment pass-through$0
Custom materials charge$0
Customer Price
$0
Profit: $0 · Margin: 0%
Rate: 10.35%
Sales tax$0
Total w/ Tax
$0

Free Concrete Measurement — Google Earth

Measure any driveway, patio, walkway, or slab in 3 minutes using Google Earth's free measure tool. Works on desktop and mobile.

1

Open Google Earth

Go to earth.google.com on your phone or laptop. Or open the Google Earth app on iPhone/Android.

→ earth.google.com
2

Search the address

Type the property address in the search bar (top left on desktop, magnifying glass icon on mobile). Hit enter. Google Earth zooms you to the property.

3

Tilt to top-down view

Press R on desktop, or tap the compass icon on mobile, to reset to a straight-down view. You should see the driveway / patio / walkway from directly above.

4

Open the Measure tool

Click the ruler icon on the left toolbar (desktop), or tap the 3-dot menu → Measure (mobile).

5

Trace the area outline

Click each corner of the concrete slab, working around the perimeter. When you close the shape, Google Earth shows you the area in square feet.

6

That's your sq ft — done

Concrete is flat, so no pitch correction needed. The number Google Earth gives you IS your square footage. Multiply by thickness to get yardage (calculator does this for you).

Tip: Driveways look bigger from above than they feel in person. Always measure — don't guess. A 20×40 driveway is 800 sq ft, not 600.
7

Plug into the calculator

Back on the Calc tab, enter L × W of each section in Areas to Pour. For irregular shapes, break them into rectangles and add each as a separate Area.

Irregular shapes: An L-shaped patio? Break it into 2 rectangles. A curved driveway? Treat each straight segment as a rectangle. Add each as a separate Area in the calculator. More accurate than averaging.
For exact bids on big jobs: Google Earth is great for ballpark and first quotes. For final bids over $20K, measure on-site with a wheel measurer or tape — Google Earth can be off by 5-10% on small areas.

PSI Quick Reference

Sidewalk / Patio3000 PSI air-entrained
Driveway / Garage3500 PSI air-entrained
Heavy Driveway4000 PSI air-entrained
Footings3000 PSI
Industrial4500+ PSI

Thickness Standards

Sidewalks4" (6" at driveway crossings)
Patios / Walkways4"
Garage slab5"
Residential driveway6"
Heavy driveway / RV6-8"
Footings12"+ per structural drawing

Reinforcement

Sidewalks: Wire mesh optional. Fiber mix can replace for small jobs.

Driveways: #4 rebar at 18" OC both ways, or 6×6 W2.9 mesh.

Slabs & foundations: Always rebar per structural drawing.

Slope / Drainage

Sidewalk cross slope2% max (ADA)
Driveway slope12% max (1.5"/ft)
Patio drainage1/4" per foot from house

Curing

Keep wet 7 days minimum. Curing compound, plastic sheeting, or wet burlap. Skipping curing cuts strength in half.

PNW NOTE: Always spec 5-7% air-entrained concrete for outdoor work. Survives freeze/thaw cycles. Cold weather (under 40°F): blankets + accelerator. Hot weather (over 85°F): pour early AM + retarder.

Seattle Concrete Suppliers

Cadman (Lehigh Hanson) — Biggest in Seattle. Multiple plants. Reliable on big pours.

Phone(425) 481-1900
Webcadman.com
CoverageKing, Snohomish, Pierce, Kitsap

Salmon Bay Sand & Gravel — Smaller orders, walk-up friendly, Ballard.

Phone(206) 784-1234
Websalmonbaysand.com

Glacier Northwest — Big commercial pours, specialty mixes.

Phone(206) 764-3000

Stoneway Concrete — Greater Seattle, decent pricing.

Phone(206) 938-9111

Rebar / Mesh

SRS Distribution — BSR's go-to (family connection).

Steel Building Products (Kent) — Cut-to-length rebar.

Equipment Rentals

Sunbelt · United · Home Depot Pro

Mini excavator$250-350/day
Standard excavator$650-800/day
Plate compactor$80-120/day
Concrete saw$90-140/day
Dump trailer$400-500/day

Demo / Recycling

Recycling Depot (Renton) — Concrete dump, by volume.

Yardage Quick Math

Formula: Yards = (L × W × T_in / 12) / 27

Shortcut: sq ft × (T_in) ÷ 324 = yards

4" slab: 1 yd ≈ 81 sq ft
6" slab: 1 yd ≈ 54 sq ft
8" slab: 1 yd ≈ 40 sq ft
12" footing: 1 yd ≈ 27 sq ft

Waste Factor

Add 10% for simple slabs. 15-20% for irregular shapes, pump pours, or new crews.

Truck Sizes

Full truck~10 yd, 600 ft hose reach
Short load< 6 yd · expect surcharge
Mini mix1-3 yd (Salmon Bay)

Finish Pricing (All-In, Seattle 2026)

Broom / Cepillado$10-14/sf
Hard trowel$16-20/sf
Stamped / exposed$20+/sf
Note: These include concrete, delivery, labor, finish. Demo and equipment billed separately.

Demo Labor Rule of Thumb

Sidewalk tear-out2 crew × 1 day = 200-400 sf
Driveway tear-out3 crew × 1-2 days = 600-1,000 sf
Patio tear-out2 crew × 1 day = 300-500 sf
Dump fees$150-300 typical (Renton)

About BSR

Built by Will Brambila, owner of BSR Constructions LLC. A family-owned roofing and exteriors company in Seattle, WA. Founded with my brother Art, we serve Pacific Northwest homeowners and contractors with the same focus every day. Do the work right. Treat people fair. Build something that lasts.

Family-built. Community-driven. Quality roofing & exterior solutions.

Why this tool exists

Every day on jobsites, contractors waste time doing math on the back of an envelope. Estimates take hours that should take minutes. Numbers get fuzzy. Profit gets lost in guesswork.

I built this tool to fix that for my own crew. Then I figured I'd share it.

It's a calculator I actually use. On roofs. In driveways. In front of homeowners. I wanted something that gave me a real bid number in 60 seconds without pulling out a laptop or doing 12 steps of math on a calculator app.

Who it's for

If you're another small business owner, contractor, or estimator out there grinding it out, this is for you too. Free. No login. No email capture. Just open it and use it on the jobsite.

Contact

OwnerWill Brambila
CompanyBSR Constructions LLC
Emailwill@bsrteam.com
Phone(206) 474-4702
Address1712 1st Ave S, Seattle, WA 98134
Webbsrteam.com

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