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G4 ConstructionGeneral contractor in Castle Rock, CO

G4 Construction is a general contractor at 4377 E Andover Ave, Castle Rock, CO 80104, rated 5.0 from 10 Google reviews. Open Monday to Friday.

Castle Rock, CO0 paid placements in any rankingHow we rank

Call (720) 219-3902Website ↗

Key facts

Key facts about G4 Construction
Address4377 E Andover Ave, Castle Rock, CO 80104Get directions
Phone(720) 219-3902
Websiteg4.construction
HoursMonday to Friday: 8 AM – 5 PM
Google rating5.0 from 10 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • General Contractingmain tradeGoogle main category
  • Paintingadditional Google category
  • Kitchen Remodeladditional Google category
  • Bathroom Remodeladditional Google category
  • Decks & Patiosadditional Google category
  • Windowsadditional Google category

Service area

Serves Castle Rock and 11 towns within 25 miles: The Pinery, Castle Pines North, Parker, Stonegate, Lone Tree, Dove Valley, Centennial, Highlands Ranch, Castlewood, Roxborough Park and Southglenn.

Based in Castle Rock, COView on map

Opening hours

Opening hours for G4 Construction
DayHours
Monday8 AM – 5 PM
Tuesday8 AM – 5 PM
Wednesday8 AM – 5 PM
Thursday8 AM – 5 PM
Friday8 AM – 5 PM
SaturdayClosed
SundayClosed
  • Open evenings — no
  • Open Saturdays — no
  • Open Sundays — no

Typical general contracting prices

Typical general contracting prices
JobLowTypicalHigh
Kitchen remodelPer project: typical range of customer-reported remodels (about $75 to $250 per sq ft). US national range × 1.00 Mountain factor (2025 Cost vs. Value Report)$14,610$27,020$41,660
Bathroom remodelPer bathroom: typical range of customer-reported remodels. US national range × 0.95 Mountain factor (2025 Cost vs. Value Report)$6,340$11,590$16,840

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Reviews

ContractorsRanked reviews

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Google

5.0from 10 Google reviews

Hired G4 Construction? Write a review

Questions about G4 Construction

What are G4 Construction’s hours?

G4 Construction is open Monday to Friday. Its listed hours are Monday to Friday, 8 AM – 5 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does G4 Construction serve?

Serves Castle Rock and 11 towns within 25 miles: The Pinery, Castle Pines North, Parker, Stonegate, Lone Tree, Dove Valley, Centennial, Highlands Ranch, Castlewood, Roxborough Park and Southglenn. The list is based on the business's location and the usual service radius for general contracting. Confirm your address is covered when you call.

What do Google reviews say about G4 Construction?

G4 Construction has a rating of 5.0 from 10 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact G4 Construction?

Call G4 Construction on (720) 219-3902. The business is at 4377 E Andover Ave, Castle Rock, CO 80104. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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