Mainline ContractingGeneral contractor in Rapid City, SD
Mainline Contracting is a general contractor at 4900 SD-79, Rapid City, SD 57709, ranked #30 of 48 general contractors in Rapid City and rated 4.0 from 8 Google reviews. Open Monday to Friday.
Rapid City, SDUpdated 0 paid placements in any rankingHow we rank
Key facts
| Address | 4900 SD-79, Rapid City, SD 57709Get directions |
|---|---|
| Phone | (605) 348-7068 |
| Website | mainlinecontracting.com |
| Hours | Monday to Friday: 8 AM – 4:30 PM |
| Google rating | 4.0 from 8 Google reviews |
Trades
Each trade shows the evidence we matched it on.
- General Contractingmain tradeGoogle main category
Service area
Serves Rapid City and 2 towns within 25 miles: Rapid Valley and Box Elder.
Based in Rapid City, SDView on map
Opening hours
| Day | Hours |
|---|---|
| Monday | 8 AM – 4:30 PM |
| Tuesday | 8 AM – 4:30 PM |
| Wednesday | 8 AM – 4:30 PM |
| Thursday | 8 AM – 4:30 PM |
| Friday | 8 AM – 4:30 PM |
| Saturday | Closed |
| Sunday | Closed |
- Open evenings — no
- Open Saturdays — no
- Open Sundays — no
Typical general contracting prices
| Job | Low | Typical | High |
|---|---|---|---|
| Kitchen remodelPer project: typical range of customer-reported remodels (about $75 to $250 per sq ft). US national range × 0.98 West North Central factor (2025 Cost vs. Value Report) | $14,300 | $26,440 | $40,770 |
| Bathroom remodelPer bathroom: typical range of customer-reported remodels. US national range × 1.03 West North Central factor (2025 Cost vs. Value Report) | $6,840 | $12,500 | $18,160 |
Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.
Compare nearby general contractors
| Business | Rank | CR Score | Google rating | License verified | Saturday | Sunday | Distance away |
|---|---|---|---|---|---|---|---|
| Mainline Contracting (this business) | — | 76 | 4.0 (8) | — | No | No | |
| Brink Constructors | #28 | 76 | 3.7 (9) | — | No | No | 6.3 mi |
| R & E Contracting | #29 | 76 | 5.0 (6) | — | No | No | 3.3 mi |
| Gruix Construction | #31 | 76 | 4.3 (6) | — | No | No | 24.0 mi |
Questions about Mainline Contracting
How is Mainline Contracting ranked in Rapid City?
Mainline Contracting is ranked #30 of 48 general contractors in Rapid City by CR Score, with 76 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity and profile completeness. No business can pay to change its rank.
What are Mainline Contracting’s hours?
Mainline Contracting is open Monday to Friday. Its listed hours are Monday to Friday, 8 AM – 4:30 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.
What areas does Mainline Contracting serve?
Serves Rapid City and 2 towns within 25 miles: Rapid Valley and Box Elder. 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 Mainline Contracting?
Mainline Contracting has a rating of 4.0 from 8 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 Mainline Contracting?
Call Mainline Contracting on (605) 348-7068. The business is at 4900 SD-79, Rapid City, SD 57709. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.
Own Mainline Contracting? Claim this profile.
Claiming is free. Correct your hours, trades and service area. The CR Score is recalculated from corrected data; payment never changes it.