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Exterior Cleaning · Chantilly, Virginia
Exterior Cleaning in Chantilly, Virginia
Chantilly properties rarely have just one exterior problem \— they have a system of them. The same white oaks and maples that shade Armfield Farm's swimming pool and shed pollen over Blue Spring Farm's tree-lined streets every spring are the ones packing gutters solid by November. Clogged gutters overflow onto brick paver patios and walkways from Poplar Tree to Sully Station, and the resulting mildew stains work their way up the siding you just soft-washed.
The Short Answer
Most exterior cleaning in Chantilly runs about $0.10–$0.50 per square foot — a typical house washing lands around $250–$700, and bundling surfaces on one visit brings the per-surface price down. Every surface gets the right method: soft wash for siding and roofs, true pressure for concrete and stone. Every project starts with a free walkthrough and ends with a written, line-item quote in 24–48 hours.
What's Included
Why Chantilly Homeowners Choose Lawn Theory
- Whole-property assessment — every surface walked and quoted line by line before work starts.
- Right method per surface — soft wash or true pressure — chosen by material, not habit.
- Organic growth treatment — algae and mildew killed at the root so results last.
- Full rinse & haul-away — the property is left cleaner than we found it, everywhere.
Local Knowledge
What Exterior Cleaning in Chantilly Actually Involves
- Algae and organic growth, handledWalk the brick-front colonials of Poplar Tree Estates or the townhome rows of Avonlea and Preserve at Westfields in late summer and you'll see the same tell: black "tiger stripes" creeping down north-facing siding and roof edges. That's Gloeocapsa magma, the algae.
- Chantilly properties rarely have just one exterior problem \they have a system of them. The same white oaks and maples that shade Armfield Farm's swimming pool and shed pollen over Blue Spring Farm's tree-lined streets every spring are the ones packing gutters solid by November. Clogged gutters overflow onto brick.
- Algae and organic growth, handledFairfax County's dense tree cover means most homes in Chantilly need gutters cleared two to three times a year \— after spring pollen, after fall leaf drop, and often a mid-summer check for homes shaded by mature oaks and pines. Skip a.
- Algae and organic growth, handledWe built the Exterior Cleaning package to break that cycle on a schedule, not a scramble. A properly sequenced visit starts high \— gutters flushed and downspouts checked for flow \— then moves to a low-pressure soft-wash of siding, trim, and soffits.
- A systematic, checklist-driven processLawn Theory follows a proven, systematic approach to exterior cleaning that ensures consistent, outstanding results for every Chantilly property we serve:
- Free estimates, transparent pricingEvery project includes a\ free estimate, transparent pricing with no hidden fees, and our\ 100% satisfaction guarantee. Call\ (703) 650-5655\ for your free estimate today.
Why Homeowners Choose Us
Exterior Cleaning, Done the Right Way
One Crew, Every Surface
House, roof, concrete, deck, gutters — one scheduled visit, each surface cleaned with its correct method.
One Crew, Every Surface
House, roof, concrete, deck, gutters — one scheduled visit, each surface cleaned with its correct method.
One Crew, Every Surface
House, roof, concrete, deck, gutters — one scheduled visit, each surface cleaned with its correct method.
One Crew, Every Surface
House, roof, concrete, deck, gutters — one scheduled visit, each surface cleaned with its correct method.
Areas We Serve
Exterior Cleaning — Areas We Serve in Chantilly


Lawn Theory provides professional house washing throughout Chantilly — every neighborhood below and beyond. No matter where you are in Chantilly, our team can reach you. We're proud to serve every neighborhood and subdivision in the area.
- Poplar Tree Estates
- Franklin Farm
- Greenbriar
- Armfield Farm
- looking its best
What Neighbors Say
Trusted on Homes Like Yours
“We hired Lawn Theory for pressure washing and landscaping. It is like we have a brand new home. Five stars!”
“They explained why they'd soft-wash our deck instead of blasting it with a wand, and I appreciated that. Came out clean without a single splintered board.”
“Written quote same day, on time for the appointment, and our HOA letter about the driveway staining is officially resolved. Would use again for our patio next.”
Chantilly, Answered
Exterior Cleaning in Chantilly — Common Questions
Does the Exterior Cleaning package really combine house washing, gutters, and hardscape in one visit?
Yes. One crew handles all three in sequence on the same visit: gutters are cleared and flushed first, the house gets a low-pressure soft-wash of siding, trim, and soffits second, and driveways, walkways, and patios are cleaned last to remove the debris that settles from the first two steps. You get one scheduled appointment and one point of accountability instead of coordinating separate vendors.
Will pressure washing damage my siding or brick?
We don't use high-pressure washing on siding. Vinyl, brick, and painted trim get a soft-wash treatment — low pressure combined with a cleaning solution that breaks down algae and mold at the surface without forcing water behind siding panels or stripping paint. Hardscape surfaces like concrete and pavers can safely handle higher pressure, so we calibrate differently by surface.
How often do Chantilly homes actually need this service?
Most homes with moderate tree cover do well with a spring and fall cleaning, timed around pollen season and leaf drop. Homes with heavy shade from mature oaks and pines, common near wooded lots close to Rocky Run Stream Valley Park or Ox Hill Battlefield Park, often benefit from a third visit in mid-summer to stay ahead of algae growth before it sets in.
What causes the black streaks on my siding and roofline?
That's typically Gloeocapsa magma, an algae strain that thrives in hot, humid conditions and shaded areas, common across Northern Virginia. It shows up as dark streaking on north-facing siding and roof edges. Left alone it spreads and etches into the material; a properly timed soft-wash removes it without needing abrasive scrubbing or harsh pressure.
Do you serve HOA communities in Chantilly with association standards for exterior appearance?
Yes, we regularly work in established Chantilly communities including Poplar Tree Estates, Franklin Farm, Greenbriar, and Armfield Farm, all of which carry HOA expectations around visible exterior upkeep. We coordinate scheduling around your community's guidelines so your property stays compliant and looking its best. Our crews work Chantilly regularly, so scheduling is usually available within the week outside the spring rush — and every visit ends with before-and-after photos of the finished work.
What's included in the hardscape portion of the cleaning?
We clean driveways, walkways, front steps, and patios, removing algae, mildew, dirt, and organic staining that accumulates from tree debris and gutter overflow. This is the same organic buildup that stains siding, so addressing it as part of the full package prevents it from re-staining surfaces you just cleaned.
What does exterior cleaning include?
Anything outside the walls of the house: house washing, roof cleaning, driveways and walkways, decks and fences, patios, gutters, and windows — each cleaned with the method its surface requires, and bundled visits are priced lower per surface. Serving Chantilly and all of Fairfax County.
Ready to Build Something That Lasts?
Get Your Free Chantilly Exterior Cleaning Quote
Tell us about your backyard and we'll send a written, line-item quote — usually within 24–48 hours.
