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Everett, WA · DADU

DETACHED ADU Builder in Everett, WA

A detached accessory dwelling unit (DADU) is a fully independent residence on your existing single-family lot. We design and build DADUs that meet rental code, hold long-term value, and look like they belong — not like a kit dropped in the yard. Every project starts with a feasibility study and ends with a turn-key handover.

Build timeline

6–8 months

Typical sqft

400–1,000 sqft

Everett cost

$126K – $360K

Permit window

10–14 wk

What detached adu looks like in Everett

DETACHED ADU projects in Everett are shaped by local zoning (R-1 / R-2 / R-3 / R-4), a lot minimum of 6,000 sqft, and the kinds of sites we see day-to-day: Riverside, Bayside, Port Gardner. Below is what every Everett DADU project from Golden State includes — fixed-price, one contract, one warranty.

  • Stamped architectural set
  • Structural + MEP engineering
  • Permit submittal & city liaison
  • Foundation, framing, weather envelope
  • Finish carpentry, cabinetry, fixtures
  • Final inspection + warranty package

Start your Everett DADU feasibility

$1,500 buys lot analysis, Everett zoning verification, and a fixed price you can build a budget on.

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FAQ

Frequently asked

  • How much does detached adu cost in Everett, WA?

    DETACHED ADU projects in Everett typically run $300–$400/sqft all-in for 2026 contracts including design, permits, structural/MEP engineering, and finished construction. A typical mid-size detached adu project closes in the $180K–$340K range depending on size, finish tier, and lot conditions. Cost drivers specific to Everett: SDC capacity charges ($4–14K spread), drainage review on lots over the impervious threshold ($8–22K), and electrical service upgrade if the existing panel can't carry the new load ($4.8–9.2K).

    Go deeper: Everett ADU cost breakdown

  • How long does detached adu take in Everett?

    End-to-end detached adu in Everett: 9–14 months from contract to keys — 6–8 weeks design, 8–16 weeks Everett permit review, 18–26 weeks construction. Catalog plans and pre-application meetings save 4–6 weeks of total elapsed time. Everett's permit median for detached adu runs at the lower end of that band when the submittal is clean — first-cycle correction count matters more than the AHJ itself.

    Go deeper: Everett ADU overview

  • What permits are required for detached adu in Everett?

    Standard Everett detached adu permit stack: building permit (combined review of structural, mechanical, plumbing), side-sewer permit, water meter capacity check, electrical permit, drainage review where impervious exceeds threshold, addressing application. Critical-areas review triggers on lots mapped for steep slope, wetland, or landslide hazard. DETACHED ADU configurations near a 5-ft separation may add fire-rated assembly requirements per IRC R302.

    Go deeper: Everett ADU permit timeline

  • What makes detached adu different in Everett vs other Puget Sound cities?

    Three Everett-specific variables: (1) reviewer preference — Everett reviewers favor specific IECC R406 envelope paths and side-sewer detail conventions, and submittals that match those conventions clear faster; (2) SDC capacity charges — Everett's fee schedule differs from surrounding jurisdictions by $4–14K typically; (3) inspection sequencing — Everett's inspection portal and queue rhythm differ from neighbors. Our Everett-specific submittal templates account for all three.

    Go deeper: Everett ADU overview

  • Does detached adu in Everett qualify for fast-track permitting?

    Often yes — under RCW 36.70A.681 / HB 1337, Everett must permit qualifying ADU and middle-housing scopes ministerially. DETACHED ADU on a residential lot meeting the standard envelope (height, setbacks, lot coverage, no critical areas) qualifies for the streamlined track in most cases. Configurations triggering design review, historic-overlay review, or critical-areas variance fall outside fast-track and add 4–10 weeks.

    Go deeper: Everett ADU permit timeline

  • Can I finance detached adu in Everett?

    Yes — HELOC, renovation loan (Fannie HomeStyle / Freddie CHOICERenovation), construction-to-perm, or cash-out refi all work for detached adu scopes in Everett. WSHFC's ADU loan pilot (currently 3.5–4.25% for owner-occupants ≤120% AMI) covers ADU-scope detached adu projects. We pre-qualify with Everett-area credit unions and banks before contract so financing isn't a surprise mid-build.

    Go deeper: Everett ADU financing options

  • What's the warranty on detached adu in Everett?

    One year workmanship, two years mechanical, 10 years structural per RCW 4.16.310. Manufacturer warranties pass through directly. Warranty applies statewide; Everett inspections and certificate of occupancy do not change warranty terms. Written warranty packet delivered at closeout includes manufacturer paperwork, paint/finish specs for touch-up matching, and the contact protocol for service calls.

    Go deeper: Everett ADU overview

  • Will detached adu raise my Everett property taxes?

    Yes, but only on the marginal value of the new improvement. Under RCW 84.40.0301 the Everett assessor adds 55–70% of construction cost to assessed value (not 100%). On a $210K detached adu project in Everett, expect $1,900–$3,100/yr additional property tax depending on your levy code area. The primary residence assessment is not reopened — only the new improvement is added to the roll the year after final inspection.

    Go deeper: Everett ADU cost breakdown

  • What's the rental income outlook for detached adu in Everett?

    Everett 1BR DADU and ADU rents in 2026 land $1,950–$3,200/mo long-term, with mid-term (30–90 day) 12–25% higher and short-term subject to Everett-specific STR rules. Net operating income after vacancy, management, maintenance, and tax/insurance increment typically lands 62–70% of gross.

    Go deeper: Everett ADU overview

  • Do you have Everett detached adu project references?

    Yes — we provide 5+ Everett detached adu references on request, including phone numbers, addresses, and one-paragraph project summaries. Everett accounts for roughly 20–25% of our active pipeline at any time, so the reference list is current — no contacts from projects more than 24 months old. Site visits to completed Everett projects available with current owner permission.

    Go deeper: Everett ADU overview

  • Can you handle critical-areas review for detached adu in Everett?

    Yes. Everett's critical-areas code (steep slope, wetland, riparian, landslide hazard) is triggered by GIS-mapped overlays on your parcel. We pre-screen at feasibility and engage a WA-licensed geotech or wetland biologist when needed. Critical-areas variances add 8–16 weeks to permit timeline; in many cases the project can be redesigned to avoid the trigger entirely, saving time and cost.

    Go deeper: Everett ADU permit timeline

  • What inspections will detached adu in Everett require?

    Standard Everett sequence: footing/foundation, underfloor MEP, wall framing, plumbing rough, electrical rough, mechanical rough, insulation, drywall nailing (some AHJs), shower pan, gas piping, final building, final plumbing, final electrical, final mechanical, and final energy verification (blower-door test for ADUs and major remodels per IECC R402.4.1.2). Each inspection scheduled 1–2 business days out via Everett's online portal.

    Go deeper: Everett ADU permit timeline

  • What is included in DETACHED ADU in Everett?

    Our DETACHED ADU in Everett scope includes design through completion: feasibility, schematic design, construction documents, permit submittal and review management, construction with one self-performed framing crew plus L&I-licensed MEP subcontractors, all required WA inspections, certificate of occupancy, and warranty. One contract, one license number, one warranty — not a coordination headache across five vendors.

    Go deeper: Everett ADU overview

  • How is DETACHED ADU in Everett different from a generic remodel?

    DETACHED ADU in Everett carries code, permit, and construction details that a one-off remodeler hasn't repeated enough times to optimize. Examples: IECC R406 envelope path selection, fire separation when units are within 5 ft, side-sewer slope requirements, IRC Appendix AQ when permitted as a tiny house, separate utility metering rules. We do this scope every month — repetition is what makes our first-cycle approval rate and our schedule reliability stand out.

    Go deeper: Everett ADU overview

  • What is the typical price range for DETACHED ADU in Everett?

    DETACHED ADU in Everett pricing in 2026 lands $330–$380/sqft all-in depending on size, lot conditions, finish tier, and AHJ. The wide range is real — small lots with difficult access, soils requiring pier-and-beam, or service upgrades push the upper end; flat lots with good access and a catalog plan land at the lower end. Our feasibility report gives you a ±15% number tailored to your specific lot in two weeks.

    Go deeper: Everett ADU cost breakdown

  • What permits does DETACHED ADU in Everett require?

    Standard DETACHED ADU in Everett permit stack: building permit (covers structural, mechanical, plumbing under combined review), side-sewer permit, water meter capacity check, electrical permit, drainage review where applicable, addressing application. Critical-areas review triggers on lots mapped for steep slope, wetland, riparian, or landslide hazard. We pull all permits as a pass-through line in our contract — not marked up.

    Go deeper: Everett ADU permit timeline

  • How long does DETACHED ADU in Everett take from contract to completion?

    9–14 months end-to-end is typical for DETACHED ADU in Everett: 6–8 weeks design, 8–16 weeks permit, 18–26 weeks construction. Faster on catalog plans with pre-app meetings. Schedule variance is driven by AHJ workload, owner selection pace, and any field-discovered conditions. We publish a Gantt at contract and update it weekly.

    Go deeper: Everett ADU overview

  • What's the warranty on DETACHED ADU in Everett?

    One year workmanship, two years mechanical (HVAC, plumbing rough, electrical rough), 10 years structural per RCW 4.16.310. Manufacturer warranties pass through directly: LP SmartSide siding 50-year, GAF Timberline HDZ shingles, Marvin window 20-year, Bosch/GE appliances 1-year. Documented in a written warranty packet at closeout.

    Go deeper: Everett ADU overview

  • Do you self-perform DETACHED ADU in Everett work or subcontract everything?

    We self-perform framing, exterior weather barrier, interior trim, and project supervision with W-2 carpenters. MEP trades (plumbing, electrical, HVAC) are subcontracted to L&I-licensed specialty contractors we've worked with 5+ years — WA requires separate PL, EL, HVAC/R licenses that a GC cannot legally self-perform without them.

    Go deeper: Everett ADU overview

  • What's the change-order policy on DETACHED ADU in Everett?

    Every change order is written, priced, and signed before work proceeds. We never charge T&M without a not-to-exceed. Owner-initiated changes carry 15% OH&P; field-discovered conditions (rotted sheathing, undocumented buried oil tank, unmapped sewer) are priced at cost +10% with photo documentation. Average DETACHED ADU in Everett project sees 4–7 change orders totaling 3–6% of contract value.

    Go deeper: Everett ADU overview

  • What financing works for DETACHED ADU in Everett?

    HELOC (fastest, 8.0–9.5% APR), renovation loan (Fannie HomeStyle / Freddie CHOICERenovation, 7.1–7.9%), construction-to-perm (best for ground-up), or cash-out refi (only if existing rate above market). WSHFC's ADU pilot at ~3.5–4.25% applies to ADU-scoped DETACHED ADU in Everett projects for income-qualified owners.

    Go deeper: Everett ADU financing options

  • Do you provide references for DETACHED ADU in Everett work?

    Yes — we provide 5+ DETACHED ADU in Everett references on request: past clients in your target city, your target neighborhood when possible, and at your target scope. References include name, phone, project address, and a one-paragraph project summary. We refresh the reference list quarterly so the contacts are recent and reachable.

    Go deeper: Everett ADU overview

CITY_DOSSIER / EVERETT· 47.9790°N 122.2021°W

Built in Everett — what we know that the spec sheet won't tell you.

A live dossier from our field PMs: the permit counter, the soils, the bylaw that just changed, and the streets where ADUs are already cash-flowing.

Map · Snohomish CountyOpen ↗
Everett
Drive-time from yard · ≈ 35 min via I-5© OpenStreetMap contributors
Population111,475
Median lot6,400 sq ft
ADU permits / yr82 (2024)
Build cost band$330–355 / sq ft
Right now in Everett
Air quality · US AQI
Source · Google Maps PlatformAffects pour windows + finish schedule
LIVE_INTEL / EVERETT · 6 SIGNALS
Pour-feasibility · todayLoading
/ 100 · Awaiting feed
  • Weather feed loading
Derived live · Everett weather + AQI
Sun rhythm · EverettDaylight
5:24 AM
9:07 PM
15h 43m daylight
Golden hour · 8:19 PM
98% of June peak
NOAA solar formulas · computed
Moon · cure-week planner
Loading

We track lunar weeks for slab pours — clear nights drop ambient temperature faster, which slows surface curing. Schedule wet slabs midweek under waxing light.

Conway approx · computed
Seismic · 24h within 60 miLoading
USGS earthquake.usgs.gov
On-site clock · Everett
—:—
· Pacific

Loading. Our standard crew window is 7:00–17:00 weekdays — noise ordinances in most Puget Sound cities allow exterior power tools only inside that band.

America/Los_Angeles · live
Build-rules pulseWithin window
7:00–17:00
Power-tool window · Mon–Fri
ADU permits YTD pace

Sunday exterior work is restricted in most Puget Sound jurisdictions. We sequence interior trades around it.

Everett municipal code · annualized
SPEC_02 / CITY_INTEL

Environmental & locational intelligence

03 / SOLAR_POTENTIAL

Rooftop solar at this address

04 / POLLEN_FORECAST

Tree · Grass · Weed (3-day)

05 / WALK_SCORE

0.5-mile amenity density

06 / NWS_ALERTS

Active NWS weather alerts

LOCATIONAL_INTEL / EVERETT
Drive times from EverettLoading

Calculating live drive times to four metro anchors…

Real commute time matters for ADU rent comps — and for our crews. We keep installs within a 60-minute radius of our Puget Sound yard.

Data provenance

Drive times pulled live from the Google Routes API (traffic-aware matrix). Each request is timestamped so you can see exactly when the numbers were last refreshed — no stale brochure data.

Google Routes API · traffic-aware
Street view · EverettLive imagery
Recent Google Street View imagery centered near Everett

Lot context matters as much as zoning. We pre-screen access, slope, and tree canopy from imagery before scheduling the site visit.

Google Street View · proxied
Tidal window · EverettLoading

Waterfront lots: shoreline excavation and barge access windows depend on these. We schedule pours away from extreme low tides when the soils dry unevenly.

NOAA · — mi away
Recent permits · EverettLoading

Open-data signal of nearby construction velocity — useful for ADU comps and for anticipating examiner workload.

data.seattle.gov · ~3 mi radius
Permit counter · Everett
Everett Permit Services
2930 Wetmore Ave, Suite 8A, Everett 98201
Mon–Fri 8a–4:30p
Local zoning quirk

Recent ordinance dropped owner-occupancy requirement — DADUs can be rented independently from the primary residence.

Sourced from Golden State ADU field PMs · WA Lic. GOLDESA747LZ
Best build window
Late April → October

Bar shows pour-friendly months · dot marks the current month.

  • Seismic
    SDC D · Devils Mountain Fault to the north
  • Soil
    Glacial till on uplands; alluvial near Snohomish River delta
  • Climate
    ≈36″ rain · convergence zone can stack squalls in Nov–Jan
  • Topography
    Mostly gentle; Riverside & Bayside drop sharply to the water
  • HOA prevalence
    ≈ 13%
Transit signal
Sound Transit Lynnwood Link (2024) cuts commute by ~22 min

Station-area lots earn the largest rent premium in this market.

School signal
Everett Public Schools

Rental yield estimate: $2,000–2,650 / mo for a 700 sq ft DADU

Local incentive

Snohomish County ADU plan-set rebate program runs annually

Hidden gem

View Ridge DADUs catch Cascades sunrise — premium short-term rentals.

Build cost · Everett vs Puget Sound
+$18 vs regional median
$250 / sqftEverett$343$425 / sqft
Other cities we hold a permit history in
EVERETT / DETACHED ADU

Detached Adu in Everett: get a quote backed by real local builds.

We file dozens of Everett Detached Adu projects a year. Send the address and we'll come back with a number plus 3 named Everett comparables.

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WA Lic. GOLDESA747LZBuilding since 2012
Direct line · Golden State ADU(425) 642-4142

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