A properly built wheelchair ramp restores independence at the front door — the literal threshold between staying home and being forced out. This guide covers ramp types, ADA slope requirements, materials, costs, and how to find a qualified contractor in the DC–Maryland–Virginia area.
ADA Slope & Size Requirements
Residential ramps don't have to meet commercial ADA code, but following ADA guidelines produces the safest, most usable ramp:
- Maximum slope: 1:12 (1 inch rise per 12 inches of length). A 24″ porch step needs a 24-foot ramp run.
- Minimum width: 36″ clear between handrails for wheelchairs
- Handrails: Required on both sides when rise exceeds 6″
- Landing: 60″ × 60″ level landing at top, bottom, and each turn
- Edge protection: 2″ curb or barrier to prevent wheels rolling off
Ramp Types & Costs
Modular Aluminum Ramps
Pre-fabricated sections that bolt together on-site. Can be installed in a day, disassembled if the home is sold, and reconfigured as needs change. The most common choice for DMV homeowners.
- Cost: $150–$250 per linear foot installed
- Typical 20-foot ramp: $3,000–$5,000
- Pros: fast install, portable, no painting/staining, lifetime warranty from most manufacturers
- Cons: industrial look (though powder-coat colors available)
Pressure-Treated Wood Ramps
Custom-built to fit the home's exact layout and can be designed to blend with existing siding and landscaping. Popular in neighborhoods with HOA aesthetics requirements.
- Cost: $100–$200 per linear foot installed
- Requires periodic sealing or staining (every 1–3 years)
- Composite decking available for low-maintenance option (+20–30% cost)
- Permits typically required — contractor handles this
Threshold & Portable Ramps
For small rises (1″–6″) at door thresholds or van entries. Rubber or aluminum, available without installation. Cost: $30–$500 depending on length and load rating.
Permits in the DMV
Permit requirements vary by jurisdiction and ramp height:
- DC: Permits required for permanent ramps; DCRA Building Permit Division
- Maryland counties: Generally required for ramps exceeding 30″ above grade
- Virginia: Permit thresholds vary by county — Fairfax requires permits for structures over 200 sq ft
A qualified contractor will pull permits as part of the project. Be wary of contractors who suggest skipping permits to save money.
Funding a Ramp
- Maryland MAMP grants — up to $7,500, covers ramps for qualifying seniors
- DC Senior Home Repair Program — free ramp installation for DC seniors 60+
- Rebuilding Together — free modifications for low-income homeowners, active in DMV
- VA Specially Adapted Housing grant — up to $109,986 for veterans with qualifying disabilities
Full Funding Guide →