CSLB C-39 #1156853  ·  Licensed, Bonded & Insured  ·  Part of NRG Construction ↗ Call or text (805) 223-8715
Roof Cost Calculator · Ventura County, CA

What should a new roof cost? Get a real range in 30 seconds.

Pick your roof system, enter the size, and see an honest planning range — built from recent NRG bids in Ventura County and current local material and labor pricing, not national averages. When you're ready for an exact number, the free measured takeoff is one click away.

Based on real local bids & 2026 pricing Includes tear-off & full system No contact info required to see it

Roof Price Range Calculator

Honest planning ranges — not a bid.

1. Roof system
2. Size

Ranges assume a single-layer tear-off, standard 1–2 story access, and a complete new system (underlayment, standard flashings, disposal). Deck repairs, extra layers, permits, and unusual access are quoted after inspection. This is a planning range, not an offer or a bid — your firm number comes from a free measured takeoff.

CSLB C-39 #1156853 Licensed, Bonded & Insured Written 5-Year Workmanship Guarantee Based in Ventura, CA
2026 Ventura County Ranges

The Numbers Behind the Calculator — In the Open.

Most roofers make you hand over your phone number to see a price. Here are our working ranges, per square foot of roof area, full tear-off and replacement included. They come from recent NRG bids in Ventura County plus current local material and labor pricing.

Architectural Shingle

$6.50 – $9.50/sq ft

The Ventura County workhorse: tear-off, synthetic underlayment, new flashings, and dimensional composition shingle. Presidential (shake-style) shingle prices above this range.

Tile Re-Roof

$9.50 – $16/sq ft

Concrete tile, installed complete with new underlayment and flashings. Clay tile and specialty profiles run higher — often $15–$25/sq ft. Heavier roofs may need framing review.

Torch-Down

$6 – $9/sq ft

Torch-applied modified bitumen for flat and low-slope roofs — the standard granulated cap-sheet system over a mechanically attached base, with new edge metal and flashings.

2-Ply Modified Bitumen

$7.50 – $11/sq ft

The heavier flat-roof build: full two-ply membrane system (base sheet plus torch-applied cap), optionally over rigid insulation — what we put on apartment buildings and commercial roofs.

Repairs

Repair Pricing Works Differently — By the Job, Not the Foot.

A repair is priced by what's wrong and how hard it is to reach, so the calculator's Repair tab uses whole-job bands from our actual Ventura County repair work. Two-story access adds roughly 15% for safety setup.

Minor Repair

$400 – $900

A handful of missing or wind-lifted shingles, a pipe-boot or vent reseal — one spot, in and out with the leak stopped.

Standard Repair

$900 – $2,500

Flashing rework at a chimney, wall, or skylight; a tile section relaid; a flat-roof patch — the most common leak fixes we do.

Larger Repair

$2,500 – $6,000

Multiple problem areas, a valley rebuild, or a whole section. Above this band, replacement often becomes the smarter buy — we'll give you both numbers straight.

Why a Range?

What Moves Your Roof Toward the Low or High End.

Layers of Old Roofing

One layer tears off at the base price. A second (or third) layer means more labor and more disposal weight — the most common reason a roof lands above the midpoint.

Deck Condition

Rot and termite damage hide under the old roof. We carry a wood-repair allowance, photograph anything we find, and price repairs before they're covered up — never as a surprise.

Pitch, Height & Access

Steep roofs and second-story or tight-access homes take more labor and safety setup. Simple walkable one-story roofs price toward the low end.

Penetrations & Flashings

Chimneys, skylights, solar mounts, and wall transitions all need flashing work. A cut-up roof with many penetrations costs more per foot than a clean gable.

Insulation (Flat Roofs)

Adding rigid polyiso insulation under a torch-down or 2-ply system improves energy performance and may be code-required on some projects — it adds material cost per square foot.

Permits & Extras

City permit and inspection fees, gutters, and skylight replacement are quoted separately so you're comparing bids apples-to-apples. We spell out every inclusion and exclusion in writing.

Calculator FAQ

Straight Answers About Roof Pricing.

How accurate is this calculator?+

It's an honest planning range, not a bid. The ranges come from recent NRG bids in Ventura County and current local material and labor pricing, so most straightforward roofs land inside them. What the calculator can't see — extra layers, deck rot, tricky access — is exactly what our free measured takeoff is for. The written bid you get after that is firm.

Does the range include tear-off and disposal?+

Yes. Every range assumes a full single-layer tear-off, disposal, and a complete new system — underlayment, standard flashings, and the roofing itself. Extra layers of old roofing and wood repairs are the most common additions, and they're always priced before we proceed.

Why is there a minimum job price?+

Mobilization, setup, safety equipment, and disposal cost roughly the same whether the roof is 600 or 1,600 square feet — so very small roofs can't scale down linearly. The calculator applies a realistic minimum instead of showing a number no contractor could honor.

How are repairs priced?+

By the job, not the square foot. Most of our repairs land in three bands — minor (~$400–$900), standard (~$900–$2,500), and larger (~$2,500–$6,000), with about 15% added for two-story access. The Repair tab on the calculator walks you through it. One honest caveat: a leak has to be diagnosed on the roof, because the ceiling stain rarely sits under the actual hole. And if you have storm damage right now, skip the calculator and call us for emergency tarping — we answer nights and weekends.

Concrete tile vs. clay tile — what's the difference in price?+

Concrete tile is the value option and what our calculator range reflects. Clay and specialty-profile tile cost more in material and take more specialized labor — often $15–$25 per square foot installed. Both get all-new underlayment and flashings; on many tile roofs the tile itself outlives the underlayment, and a re-felt (reusing your existing tile) can be the smarter buy — we'll tell you if that's your situation.

What happens after I request the firm bid?+

We come out, get on the roof, and do a real measured takeoff — then you get a written scope and a firm price with the 5-year workmanship guarantee attached, typically within one business day of the visit. No pressure, no obligation, and the number you sign is the number you pay.

From Range to Real Number

The Calculator Gets You Close. The Takeoff Makes It Firm.

A free estimate costs you nothing: a real measured takeoff, a firm written bid, and the 5-year workmanship guarantee attached before you sign. No pressure, no obligation.

Free Estimate

Turn Your Range Into a Firm Written Bid.

Your calculator selections come with the form automatically — just add your contact info and we'll reach out to schedule the free measured takeoff.

NRG Roofing — National Roofing Guys
Ventura, CA
Phone / text: (805) 223-8715
Email: lc@nrg-roofing.com
CSLB C-39 #1156853 · Licensed, Bonded & Insured

Request Your Firm Written Bid

We typically respond within one business day.

No spam, no pressure — just a straight answer about your roof.