- Even rise, solid landing · fixed price
Deck Stair Replacement & Installation in Northern Virginia, Maryland and DC
FIXO handles deck stair replacement and new deck stairs installation for decks and porches across Northern Virginia, Maryland and Washington, DC at one fixed price. We cut new stringers to an even rise and run, fit wood or composite treads, add a graspable handrail and set the bottom step on a solid landing. Most staircases are finished in a day.
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Virginia · Maryland · Washington, D.C.
The number you sign is the number you pay
Express measurement within 48 hours
- The three specs that matter
Deck Stair Replacement to Code: Rise, Stringers and Landing
Stairs are where people fall. These three details make them safe, and they’re what a building inspector measures. The numbers come from the International Residential Code (IRC), the base of the 2021 Virginia Residential Code.
Rise and Run: Even, Every Step
Risers no taller than 7-3/4 inches, treads at least 10 inches deep, and no riser or tread more than 3/8 inch different from the rest of the flight (IRC R311.7.5). An uneven bottom step is the most common trip hazard we fix.
Stringers: Spaced for the Tread
Stringers are cut from 2×12 lumber, hung at the top and anchored to the landing at the bottom, never left sitting on soil. Spacing follows the tread maker: Trex calls for 12 inches on center under most of its 1×6 composite stair treads, and 9 inches under Enhance.
- Composite treads on stringers spaced for wood can sag, so we check the spacing before we quote.
Landing: Concrete Pad or Pavers
A stair that lands on grass or gravel sinks, rots and moves. A poured pad or set pavers keep the bottom step at the right height for years.
- Landing pads are itemized when the existing one is missing or heaved.
- How it works
Deck Stair Replacement in Three Steps
One visit to measure the drop, one fixed number, and safe stairs in a day.
Tell us about the stairs
Call, text or book online with a rough number of steps and what’s wrong: wobble, rot, an uneven bottom step. We book a measurement within 48 hours.
- Same day
Express measurement, fixed price
A carpenter measures the total rise and run, checks the stringers and landing, confirms the tread material with you and hands you one written price.
- Within 48 hrs
Old stairs out, new stairs in
Stringers cut and set, treads and risers fastened, handrail and guard installed, landing poured or set where needed.
- 1 day
- Straight talk
Replace the Deck Stair Treads or the Whole Staircase?
If the stringers are solid, evenly cut and properly anchored, you only need to replace deck stair treads (and risers). If the stringers are soft where they meet the ground, notched too deep, or the steps are uneven, the whole staircase comes out. We probe the stringers and tell you which one you need.
| Replace treads and risers | Full deck stair replacement | |
|---|---|---|
| Stringers | Solid and evenly cut | Soft at the bottom, over-notched, or uneven |
| Steps | Within 3/8 inch of each other | Uneven bottom or top step |
| Landing | Firm and level | Sunk, heaved or missing |
- Rise checked step by step
What We Measure on Every Staircase
Four measurements decide whether new treads are enough.
- Total rise from deck to finished landing
- Every riser and tread, against the 3/8-inch rule
- Stringers probed where they meet the ground
- Handrail height and grip on stairs with four or more risers
Your price at measurementFixed · all-in
Where we talk you out of it: steep stairs forced into too short a run. If the geometry doesn’t fit, we show you the landing or turn that does.
- Handrails and guards
Deck Stair Handrail Installation and Guards
A stair with four or more risers needs a graspable handrail 34 to 38 inches above the nosings (IRC R311.7.8). If the open side of the stair is more than 30 inches above the ground, it also needs a guard at least 34 inches high with openings under 4-3/8 inches, and the triangle at the bottom rail under 6 inches (IRC R312.1). Deck stair handrail installation is part of every FIXO staircase quote. For full deck rails, see deck railing installation.
- What it costs
Deck Stairs Installation Cost and Replacement Cost
Short answer: HomeGuide puts deck stair replacement at $500 to $1,500 and a new set of 4 to 8 basic steps at $1,400 to $2,600. Locally, Angi’s Fairfax, VA data for wood stairs and railings averages $1,835, with most jobs between $1,143 and $2,880.
Deck Stair Replacement Cost by Job
| Deck stair job | Typical price | Source |
|---|---|---|
| Deck stair replacement (remove and rebuild) | $500 – $1,500 | HomeGuide |
| New deck stairs, 4–8 basic steps | $1,400 – $2,600 | HomeGuide |
| Per step, pressure-treated wood | $30 – $60+ | HomeGuide |
| Per step, composite | $50 – $100+ | HomeGuide |
| Concrete landing pad | $300 – $500 | HomeGuide |
| Wood stairs and railings, Fairfax, VA | $1,143 – $2,880 (average $1,835) | Angi |
National and Fairfax cost-guide ranges. Your FIXO number is one written, fixed price, given at the measurement.
- Stair by stair
What Makes Deck Stairs Fail
Almost every stair we replace failed for one of these reasons.
- The usual failures
Stringers on soil, uneven steps, no handrail
What we find under most wobbly deck stairs.
- Stringers resting on dirt or gravel, rotted at the bottom
- A bottom step taller or shorter than the rest
- A handrail that’s missing or too wide to grip
- Built right
Anchored, even and graspable
How FIXO stairs are built across Northern Virginia, Maryland and DC.
- Stringers hung at the top and anchored to a solid landing at the bottom
- Every riser within 3/8 inch of the next
- Graspable handrail 34 to 38 inches above the nosings
- Treads that match the deck boards, wood or composite
to measurement
fixed price
day to build
- Porch steps
Front Porch Steps Replacement
Wood and composite porch steps get the same treatment as deck stairs: new stringers laid out to the real total rise, treads matched to the porch floor, a handrail where there are four or more risers, and a landing that won’t sink. Front porch steps replacement is usually a one-day job.
- Clients love us
What homeowners in Northern Virginia, Maryland & D.C. say
Every review below is a real Google review, quoted word for word.
G Google · Verified
“Fast, professional, and very transparent pricing. They replaced our old living room carpet with LVP and it looks stunning.”
LVP · living room
G Google · Verified
“If you need a flooring contractor in Fairfax, these are your guys. They installed lvp in our entire basement. No mess left behind, and the price was very fair.”
Fairfax, VA · LVP · basement
G Google · Verified
“Fantastic experience! We wanted to replace the old carpet in our home with LVP. The team was punctual, and the floors look incredible. Highly recommend their installation services.”
LVP · carpet replacement
- Where we work
Deck Stair Replacement Across Northern Virginia, Maryland and DC
FIXO rebuilds deck and porch stairs in Alexandria, Arlington, Fairfax, McLean, Great Falls, Vienna, Oakton, Falls Church, Tysons, Reston, Herndon, Ashburn, Centreville, Clifton and Burke, Virginia, Bethesda and Silver Spring, Maryland, and Washington, DC. The carpenter who measures your stairs is the one who builds them.
Stair replacement usually needs a permit. Montgomery County’s permitting office lists stairway replacement as work that needs one, and Fairfax County requires a permit to alter an existing deck. We check your address and pull it where required.
- FAQ
Deck Stair Replacement: Questions We Get Every Week
Straight answers. If yours isn’t here, call (757) 589-6859 — an installer picks up.
HomeGuide puts it at $500 to $1,500 to remove and rebuild a staircase, and $1,400 to $2,600 for a new set of 4 to 8 steps. FIXO gives you one fixed price after a free measurement.
Divide the total height from deck to landing by a riser of about 7 inches, and round up. No riser can be taller than 7-3/4 inches. We measure it exactly so every step is equal.
Yes, when the stringers are solid and evenly cut. If they’re soft at the bottom or the steps are uneven, the whole staircase needs replacing.
Any stair with four or more risers needs a graspable handrail 34 to 38 inches above the nosings. Open sides more than 30 inches above the ground also need a guard. We build both in.
Usually. Montgomery County lists stairway replacement as permit work, and Fairfax County requires a permit to alter an existing deck. We confirm the rule for your address and handle the permit.
Yes, in wood or composite. Composite treads are matched to the brand and color where it’s still made.
If the bottom step lands on grass or heaved pavers, we add a concrete pad or re-set the pavers as a line on the quote.
Most staircases take one day. Add time if a landing pad has to cure.
Yes. The number you sign is the number you pay, including the stringers and landing we listed.
- Ready when you are
Get Your Fixed Price for Deck Stair Replacement
Book a free express measurement and an installer hands you one written number within 48 hours.
- Prefer to talk first?
Let's talk about your deck stairs.
Leave four details and an installer calls you back within business hours, usually inside the hour. No sales script, no pressure, no showroom visit.
- Call or text(757) 589-6859
- Emailinfo@fixodmv.com · replies within a few hours
- HoursMon–Sat 8am–8pm · Sun closed
- ServingNorthern Virginia, Maryland & Washington, D.C.
The person who measures your home is the person who installs it.
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