Washington sets its home improvement licensing threshold at $250 — among the lowest of any American jurisdiction — and protects its largest trees so strongly that removing one is effectively off the table. Both facts catch homeowners out, and both are easy to check before work starts. This page lists landscapers serving Washington, DC.
What DC landscapers handle
Rowhouse and townhouse garden design — small, highly visible spaces where design quality shows immediately.
Tree care under the city’s protective framework.
Maintenance across a season running roughly April through November.
Hardscape — patios, steps, walls — subject to permitting and, in historic districts, design review.
Container and roof terrace planting in the denser neighbourhoods.
Licensing in the District
DC has no dedicated landscape contractor licence. What applies instead:
Home Improvement Contractor licensing at a very low threshold. Any project — including landscape work with construction elements — costing $250 or more may require a licensed Home Improvement Contractor. That threshold is low enough to capture almost any real project, so ask whether the contractor holds HIC licensing when your job includes built elements.
Pesticide applicators must be licensed through the DC Department of Energy and Environment (DOEE). Ask for the credential if anyone will be treating your lawn.
Verify general liability and workers’ compensation directly, and confirm the contractor is registered to do business in the District.
What’s specific to Washington
Large trees are protected by law. The District regulates removal of large trees by trunk circumference, with a tier of specially protected trees requiring permits and the very largest — the city’s heritage specimens — effectively protected from removal altogether.
The thresholds are measured by circumference, so a mature oak or tulip poplar in a back garden can easily qualify. Practical guidance:
- Measure before you plan. If a tree you’re considering removing is substantial, confirm its status with the city’s urban forestry office before committing to a design that assumes it’s gone
- Penalties are real, and unauthorised removal of a protected tree is expensive
- Root damage during construction is the more common and less visible threat. Root zones extend far past the branch spread, and trenching, grade changes and equipment compaction inside them cause decline over years
Ask any contractor how they protect root zones near mature trees. In a city with this level of tree protection, a vague answer is a warning.
Street trees are city property. Trees in public space are managed by the District, and work affecting them requires permission. Confirm before touching anything in the tree box.
Historic district review. Large parts of DC sit within historic districts where visible exterior changes — fencing, paving, walls, some structures — may require review. Confirm before altering anything street-facing.
Access constrains rowhouse work. Much of the District’s housing is attached, so rear gardens are reached through the house or a narrow alley. Material and debris move by hand, which is a legitimate cost driver and the reason quotes vary widely between contractors who walked the route and those who didn’t.
Chesapeake watershed nutrient concerns. DC drains to the Anacostia and Potomac and ultimately the Chesapeake. Phosphorus is unnecessary on most established lawns, slow-release nitrogen stays where it’s applied, and fertiliser applied before heavy rain or onto hard surfaces washes straight into a storm drain. A company that soil-tests before recommending phosphorus is doing right by you and the watershed.
Clay soils near the fall line. DC sits near the Piedmont–coastal plain boundary, so conditions vary — heavier clay toward the northwest, sandier toward the southeast. Clay compacts readily and drains slowly; core aeration genuinely helps, and planting holes glaze when dug wet.
Humid summers, zone 7b. Genuine winter freezes and hot humid summers. Fungal disease pressure in turf is real, and small shaded rowhouse yards keep foliage damp — water early morning, never in the evening.
Road salt. Winter de-icing damages street-level plantings. Salt-tolerant species at street level and thoughtful snow placement both help.
Pricing expectations
Washington DC figures for 2026, from DOEE, DC Water and the DC Code:
- DC pays you to remove hard surface, not lawn. RiverSmart Homes reimburses $15 for every square foot converted to permeable pavers and $8 per square foot re-vegetated, capped at $6,000 per property — but it is limited to certain wards and sewersheds, requires a DOEE audit reached through a waitlist, and is paid after completion, not up front
- RiverSmart Homes copayments, all subject to that same audit and waitlist: a rain barrel $100 (limit two); a 50 sq ft rain garden $200 (limit two); a 120 sq ft BayScape native garden $200. Shade trees are planted free, with no limit
- RiverSmart Rewards then cuts the bill: up to 55% off the DC Government Stormwater Fee and up to 20% off DC Water’s Clean Rivers Impervious Area Charge — the actual discount depends on application type, property size and runoff retained. Approvals run three years
- What those charges are: the Clean Rivers Impervious Area Charge is $24.23 per equivalent residential unit and the DC Government Stormwater Fee $2.67 in FY 2026 — so the percentage above is applied to a real monthly line
- Trees are protected by circumference, not diameter. A Special Tree is 44 to 99.9 inches around; a Heritage Tree is 100 inches or more. The removal permit fee for a Special Tree is a statutory minimum of “not less than $55 for each inch of circumference”, paid into the Tree Fund — and it is one of three permit routes, with no payment due for a tree certified hazardous or on the exempt species list
- Unlawful removal is punished by the inch: a fine of not less than $300 per inch of circumference
Washington runs the opposite programme to the arid West, and it is generous. Where Phoenix and Las Vegas pay you to take grass out, DOEE pays you to take concrete out — $15 a square foot for permeable pavers is the highest hard-surface conversion rate on this site. But read the three conditions before you plan around it. It is geographically limited to particular wards and sewersheds, so eligibility is about where you live rather than what you build. It requires a DOEE audit that you reach through a waitlist, and the audit determines eligibility. And it is a reimbursement paid after the work is finished, so you are financing the job yourself in the meantime. The smaller RiverSmart copayments — barrels, rain gardens, BayScapes — run through the same audit.
The part people miss is that the money keeps coming. RiverSmart Rewards discounts the stormwater charges on your bill for three years at a time, and those charges are real: $24.23 per unit for Clean Rivers plus $2.67 for the District fee, every month. A rebate pays once; this reduces a standing charge. Renew up to 90 days before expiry.
On trees, get the measurement right, because DC uses circumference and most people reach for diameter. A tree 44 inches around is about 14 inches across — far smaller than it sounds, and well inside the range of an ordinary garden tree. At not less than $55 per circumference inch, a Special Tree permit on a 60-inch trunk starts above $3,000. Note the nuances: the statute sets a minimum, not a fixed price; it is one of three alternative routes; and a tree certified hazardous, or of an exempt species, requires no payment at all. Get the certification question answered before assuming the fee applies.
A caution on something you may be told: a proposal to lower the Special Tree threshold circulates widely, but DDOT — the agency that actually issues the permits — publishes 44 inches today, and the Code library flags the amendment as unimplemented pending appropriation. Work to 44.
For pricing, one N.W. Washington design-build firm publishes rates: paver walkways and patios $20–$50 per square foot, driveway pavers $30–$60, retaining walls $40–$100, with labour at $50–$100 an hour. By planting style it runs $5–$15 per square foot for informal, $10–$20 formal or woodland, $15–$25 for an English garden and $20–$35 for a Japanese-influenced design. Treat those as one quadrant’s rates rather than the District’s.
These are ranges local landscaping companies publish for this metro rather than survey data, so treat them as a bracket to check a quote against, not a price list.
Two contract items: whether your ward and sewershed qualify for RiverSmart, and that you can carry the cost until reimbursement, and the circumference of any tree being removed — 44 inches makes it a Special Tree, and the fee is charged per inch.
Neighborhoods served
Landscapers listed here work across Washington, including Georgetown, Capitol Hill, Dupont Circle, Cleveland Park, Chevy Chase DC, Petworth, Columbia Heights, Brookland, Takoma and Anacostia.
Most also serve surrounding communities — Bethesda, Silver Spring, Arlington, Alexandria, Takoma Park, Chevy Chase and Hyattsville.
How this directory helps
Every landscaper here is listed with business name, address and phone so you can verify them yourself.
Three questions sort DC contractors. Ask whether they hold Home Improvement Contractor licensing — the $250 threshold captures almost everything. Ask for the DOEE pesticide licence if anyone will spray. And before planning around removing a large tree, ask them to help you confirm its protected status with the city. That conversation is much cheaper before the design than after.