fairfax · Home Additions
Reliable Home Addition Contractors in Fairfax Station, Virginia
Fairfax Station's larger lots and equestrian setbacks change the addition game. Here's what reliable contractors do differently in 22039.
Fairfax Station is its own animal
Fairfax Station (22039) sits in the R-C and R-1 zoning belt — 1+ acre lots, many on septic and well, with equestrian setback overlays in places. Reliability here means knowing all of that.
What changes on Fairfax Station lots
- Septic system distance: additions must maintain 10' from septic lines and 50' from drainfield (Fairfax Health Department review required)
- Well location: 25' from foundation; 100' from any septic drainfield
- Driveway access: long driveways mean staging materials further from the house — adds 5–10% to labor
- Stormwater management: lots over 1 acre often trigger SWM requirements for additions over 2,500 sq ft
What "reliable" looks like in Fairfax Station
- Pre-checks septic certification before designing the addition footprint
- Coordinates with Fairfax County Health Department in parallel with building permit
- Brings larger equipment rated for unpaved driveways
- Provides a stormwater plan when needed
2026 Fairfax Station addition pricing
| Type | Range |
|---|---|
| Primary suite addition | $200K–$330K |
| Detached in-law / ADU | $220K–$380K |
| Second-story addition | $300K–$550K |
| Sunroom / screened porch | $60K–$140K |
Vetting questions for Fairfax Station
- "Have you pulled health-department permits in 22039?"
- "Do you provide stormwater management plans?"
- "What's your plan for protecting my drainfield during construction?"
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