Pricing Guide

What a Roof Replacement Actually Costs
in Southern California

There's no single price for a roof. The variables that move it are easy to understand once someone walks you through them. Here's the honest version — no bait pricing, no anchor numbers.

Get an instant budget estimate in about 60 seconds using aerial roof data — no appointment or sales call required.

Why Pricing Varies

Why Two Houses on the Same Street Can Get Very Different Quotes

Roof replacement pricing isn't standardized — and it shouldn't be. The actual scope of work varies meaningfully from one home to the next.

Square Footage and Pitch

A 1,800 sq ft single-story tract roof is a fundamentally different job than a 3,400 sq ft two-story with multiple hips and valleys.

Number of Existing Layers

Tearing off one layer of architectural shingles is much faster than tearing off two layers, or removing concrete tile.

System Selection

GAF Timberline HDZ, GAF Grand Sequoia, and DaVinci synthetic each carry meaningfully different material costs.

Underlayment + Flashing Package

Synthetic underlayment, ice & water shield in valleys, premium flashings — these are line items, not assumptions.

Ventilation Work

If we have to rebalance attic intake and exhaust (we usually do), that's part of the scope.

Deck Repair

We don't know what the deck looks like until tear-off. Most projects need very little; some need more.

Honest Ranges

Where Most Real Quotes Land

We won't anchor a fake low number to win the click. Here's the honest framework most Southern California homeowners are working inside.

Standard Architectural GAF System

Complete GAF Timberline HDZ system on a typical single-story tract home — entry tier of premium replacement work.

Designer GAF System

Complete GAF Grand Sequoia system — upgraded curb appeal, dimensional cedar-shake look, same Golden Pledge coverage.

DaVinci Synthetic System

Premium synthetic shake or slate, Class A fire and Class 4 impact rated, Limited Lifetime Material Warranty. Premium tier.

Get a Real Estimate in 60 Seconds

Aerial-data ballpark. No phone call required. No sales pitch.

Request Detailed Quote

What Cheap Quotes Hide

Why the Lowest Quote Is Almost Never the Cheapest Roof

When the same property gets bids that are thousands of dollars apart, the gap is almost never about labor margin. It's about scope.

  • 30-lb felt instead of synthetic underlayment

  • Reused or basic galvanized flashings instead of premium

  • Shingle-only install — no leak barriers in valleys or eaves

  • Existing ventilation ignored, not rebalanced

  • No tear-off — overlay on top of existing shingles

  • No system match — no eligibility for enhanced manufacturer warranty

Real Number

How to Get an Actual Number for Your Home

The fastest way is the instant estimate — it pulls aerial measurement data on your property and gives you a real ballpark in about 60 seconds. The detailed quote that follows is the actual scope-and-pricing document.

Instant Estimate

Aerial measurement-based ballpark. About 60 seconds. No salesperson at your door.

Detailed Quote

Written, line-itemed scope and pricing — by system tier so you can compare side-by-side.

FAQs

Common Questions

We can give a rough range, but we won't pretend to quote you blind. The instant estimate uses aerial data to generate a real ballpark in about 60 seconds — that's a much better starting point than a guess on the phone.

Not yet for standard roofing projects — those are payable by cash or check, and a Westmark financing program may become available in the future. One exception: integrated GAF Timberline Solar projects are contracted directly with GAF, which makes third-party financing options available for those projects. See the financing page for the current status.

Our quotes are scope-driven, not negotiation-driven. We don't inflate the price so we can 'discount' it during a sales pitch. The number you see is the actual cost of the actual scope.

Almost always because they're quoting a different scope — basic underlayment, no leak barriers, reused flashings, no ventilation work, or even a shingle-over-shingle overlay instead of a real tear-off.

Get Your Real Roof Replacement Estimate

Written quotes, not verbal ranges. Full-system installs, not shortcuts. No pushy sales tactics.

Get an instant budget estimate in about 60 seconds using aerial roof data — no appointment or sales call required.

Or speak with us directly(619) 649-7836