Danvers, Massachusetts
Additions and second stories in Danvers, and the 1925 rule
- Danvers Square
- Danvers Center
- Danversport
- Putnamville
- Tapleyville
- Hathorne
- Ferncroft
- Burley's Corner
- Salem Village
In Danvers, a new dormer on a house built in 1925 or earlier can count as demolition, so the year the house was built is the first thing we look up. Our Danvers work includes an addition, a primary bath, a deck, a porch rebuild and floor refinishing in an older house, and the town borders Peabody, where we are based.
About 3.6 miles from Peabody to Danvers. Straight-line distance to our Peabody base
Houses here
The houses of Danvers, era by era
Danvers began as Salem Village, the farming settlement where the 1692 witch-trial accusations started, and farmhouses from those early generations still stand among later streets. The village centers, Putnamville, Tapleyville, Hathorne and Danvers Center, took shape in the railroad years of the late 1800s, and suburban streets filled the ground between them in the twentieth century. Where the Porter, Crane and Waters Rivers join to form the tidal Danvers River, Danversport sits at sea level with its own waterfront zoning. Power comes from the town's own Danvers Electric, founded in 1889.
First Period
First Period and colonial farmhouses in old Salem Village
The oldest houses are in the former Salem Village, around Centre, Hobart, Ingersoll, Forest and Collins Streets. The Salem Village Historic District there is both a local district and a National Register listing, and the two boundaries may not match exactly, so we check the parcel against each. Expect hand-hewn timber frames, low ceilings and generations of alterations. New openings, structural repairs and code-compliant stairs have to be sequenced with care, and exterior changes inside the local district go to the Historic Districts Commission first.
1800s
Late-1800s houses in the village centers
Putnamville, Tapleyville, Hathorne and Danvers Center grew mostly in the late nineteenth century. Any house built in 1925 or earlier sits under the demolition-delay bylaw, and Danvers counts a new roofline or roof pitch, or the removal of walls, porches or foundations, as demolition. A dormer or second story on one of these houses goes to the Preservation Commission before the building permit.
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Twentieth-century streets between the villages
Suburban streets filled in between the old centers through the 1900s. A house built after 1925 and not on a register is outside the demolition bylaw, which makes dormers, second stories and rear additions simpler to plan. Lot conformity and the wetlands bylaw are usually the limits that matter.
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Danversport on the tidal river
Waterfront homes share Danversport with an industrial zone along the river. Here the flood zone decides foundation type and where the mechanicals can go before anything else is drawn, and the waterfront district's design guidelines ask that views of the water and pedestrian access to it be kept.
Before you build
Before you build in Danvers
What local rules, the ground and the energy code ask of a project here, each with the source we checked. Rules change and some depend on the parcel, so we confirm them with the building department before anything is drawn.
Historic district
1925 is the line
The demolition-delay bylaw covers any building built wholly or partly in 1925 or earlier, plus anything on the State or National Register. It treats a new roofline or roof pitch, and removing exterior walls, porches or foundations, as demolition. The Preservation Commission decides significance within 45 days of the application; if it then finds after a hearing that the house should be preserved, the delay is 12 months, or 18 months for houses over 200 years old or on a register. Our historic district guide walks through the process.
Local note
Wetland lines that move the addition
The Danvers wetlands bylaw is stricter than the state act. Its reach runs 100 feet from wetlands and 200 feet from rivers and perennial streams, with a 35-foot no-disturb zone and a 50-foot no-build zone measured from wetland resources unless the Conservation Commission authorizes otherwise. Isolated wetlands of 5,000 square feet or more are protected too. We confirm the flag line before siting an addition, a patio or a dumpster.
Coastal & wetlands
Danversport and the tidal rivers
Danvers has no ocean beach, but it is tidal. The zoning floodplain overlay covers every FEMA flood zone on the Essex County map, so in Danversport and along the Porter, Crane and Waters Rivers we pull the parcel's zone first: foundation type, mechanical locations and the substantial-improvement test follow from it. Docks, floats and seawalls can also need a MassDEP Chapter 91 license.
Energy code
Still on the Base Code
Danvers is on the Base Energy Code, not the Stretch Code. As a town with its own light plant, it only became eligible for the Green Communities program after a 2022 state law. The town's resilience site describes a possible future Town Meeting vote on the Stretch Code; nothing has been adopted. We design to the code in force when the permit is filed and tell you if a later filing date could change insulation, air-sealing or HVAC requirements.
Guide: Massachusetts stretch code requirements for additions, ADUs and renovationsSource : Resilient Danvers: Green Communities (Base Code status)
ADU rules
Family units and protected ADUs
Danvers' posted zoning still has Extended Family Living Area rules: family only, 750 square feet, no more than two occupants, an owner-occupied lot and a recorded restriction. A protected ADU under state law can be up to 900 square feet or half the house and rented to anyone, with no owner-occupancy rule, and local rules that conflict cannot be enforced. Pick the path before drawings start and confirm it with the Building Department. More in our ADU law guide.
Penney in Danvers
Our work in Danvers
From our own job list: projects in Danvers that are finished, underway or under contract. Client names and addresses stay private.
- CompleteHome addition
- Complete16×25 deck built over an EPDM roof on a tapered sleeper system with hidden fasteners
- UnderwayPrimary bath renovation with an extended shower and bedroom updates
- ContractedSecond-floor porch and stairs rebuilt
- CompleteWide-board floor refinishing in an older home
As of September 2026
What we build here
What we build in Danvers
Home additions
On a house from 1925 or earlier, a second story or a dormer is a demolition question before it is a framing question. On newer houses, additions are mostly a matter of setbacks, lot conformity and the wetlands line.
Primary baths
A larger shower usually means moving a drain and a vent, and in an older Danvers house the joists decide where they can go. We plan that route before the tile is chosen.
Porches & outdoor living
Second-floor porches, stair rebuilds and decks over flat roofs. A deck over a rubber roof goes on a tapered sleeper system so the membrane underneath keeps draining. On a pre-1925 house, removing a porch can itself count as demolition.
Historic renovation
Salem Village farmhouses and late-1800s village houses reward careful work: refinishing wide-board floors rather than replacing them, and planning structural repairs around timber frames.
Questions
Questions we hear in Danvers
Will adding a dormer or second story to my older Danvers house trigger demolition delay?
It can, if the house was built in 1925 or earlier or is on the State or National Register. Danvers treats a new roofline or roof pitch, or the removal of walls, porches or other structural parts, as demolition. The Preservation Commission first decides, within 45 days of the application, whether the house is significant and the work would substantially affect it. A delay of 12 months, or 18 months for houses over 200 years old or on a register, applies only if the Commission then finds after a public hearing that the house should be preserved.
Can I add an ADU or in-law apartment to my house in Danvers?
Generally yes. Since February 2025, state law has allowed one ADU of up to 900 sq ft (or half the house, if smaller) by right wherever single-family homes are allowed, with no owner-occupancy requirement. Danvers' zoning also still has its older family-only Extended Family Living Area rules. Confirm with the Danvers Building Department which rules apply to your lot, especially if the lot or house is nonconforming or near wetlands.
What approvals do I need to renovate a house in Danversport near the water?
Besides the building permit, check the FEMA flood zone and the town's floodplain overlay. You may also need Conservation Commission approval under both the state Wetlands Protection Act and Danvers' stricter bylaw, with its 35-ft no-disturb and 50-ft no-build zones. Docks, floats or seawalls on the tidal rivers can need a Chapter 91 license from MassDEP as well.
Which energy code applies to an addition in Danvers?
The Base Energy Code. Danvers has not adopted the Stretch or Specialized codes, according to the state's April 2025 adoption list and the town's own resilience site. The town has floated a possible Stretch Code vote, so if your permit filing is some way off, ask the Building Department what will be in force when you file.
Sources
Facts checked September 30, 2026Job list as of September 2026
- 01Town of Danvers General Bylaws (through May 18, 2026): Ch. XXVI Wetlands, Ch. XXIX Demolition Delay, Ch. XLV Historic Districts
- 02Town of Danvers Zoning Bylaw (through Feb. 2024): ADU and EFLA rules, Floodplain Overlay, Danversport Village Waterfront District
- 03Resilient Danvers: Green Communities (Base Code status)
- 04DOER Building Energy Code Adoption by Municipality (April 8, 2025; ACEC-MA copy)
- 05Town of Danvers: Permits & Payments (online permit portal)
- 06Wikipedia: Danvers, Massachusetts (villages, Danvers River, Danvers Electric)
- 07Wikipedia: Salem Village Historic District
- 08South Essex Sewerage District (member communities)
Town rules change, and some depend on the parcel. We use these as a starting point and confirm with the building department, planning office or conservation commission before design.
Start a project
Tell us about your house in Danvers.
We walk it with you, measure, check what the town will require, and talk through design, budget and schedule before anything is drawn.
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(978) 854-5383