Contractor Bid Invitation

55 Hartley Avenue

Residential Addition, Two-Car Garage and ADU | Brockton, Massachusetts

We are seeking a general contractor to review our plans and provide a detailed proposal for an addition and renovation at our home in Brockton.

The project includes expanded living space, an attached two-car garage, an accessory dwelling unit (ADU), and outdoor improvements. We are looking for clear pricing, good communication, and a practical construction schedule.

Proposed front elevation of 55 Hartley Avenue showing the second floor addition and two-car garage
Proposed front elevation. Sheet A.3, Architectural Plans, Revision 3.
Addition + ADUMain home addition and renovation
2-Car GarageAttached, with ADU above
~900 sq ft ADUTwo bedrooms over the garage
Rev. 3 PlansDated October 7, 2026
Project Overview

The planned work includes

  • An addition to the main home and changes to existing rooms.
  • A new main kitchen and related living spaces.
  • A two-car garage with an approximately 900-square-foot, two-bedroom ADU above.
  • Bathroom, closet, pantry and mudroom work shown in the plans.
  • Foundation, framing, roofing, siding, windows and doors.
  • Plumbing, electrical, heating, cooling and ventilation.
  • Decks, stairs, walkways, a pergola and outdoor shower features.
  • A proposed in-ground pool and related outdoor work.
Please use the architectural drawings to determine the exact work and quantities. This summary does not replace the plans.
Surveyor's building location plan for 55 Hartley Avenue, Brockton, showing Lot 1 of 16,829 square feet and the existing house
Existing building location plan, April 14, 2026. Click to view full size.
Plans and Property Information

The documents available for review

October 7, 2026 | Revision 3

Architectural Plans

Proposed layouts, exterior views, foundation and framing drawings, roof details, and window and door schedules.

April 14, 2026

Existing Building Location Plan

The surveyor's drawing of the existing property and building locations. This is not a completed proposed site-development plan.

Existing Home

Matterport 3D Tour

Explore the existing home before scheduling a visit. Please verify measurements and conditions on site.

Please note: Structural engineering and final permit coordination are still being completed. These documents are provided for bidding and review and should not be treated as authorization to begin construction.
Please identify any information you need before you can provide a firm price. Updated documents will be shared as they become available.
Existing Building Location Plan

Lot and existing house location

Prepared by C.W. Garvey Co., Inc., Surveyors and Engineers, Whitman, MA. Dated April 14, 2026. Click the drawing to zoom in.

Surveyor's building location plan for 55 Hartley Avenue, Brockton, showing Lot 1 of 16,829 square feet, the existing house, driveway, drain easement and building envelope
Surveyor's drawing of existing conditions only. Not a proposed site-development plan. Download PDF
Lot Size16,829 sq ft (Lot 1)
ZoningResidence 1C
Assessors ParcelMap 173, Plot 003
Easement15 ft drain easement
Important Planning Details

Please address these in your proposal

We plan to live here during construction

We intend to remain in the home during construction, if practical. Please explain how you would manage work areas, dust, safety, access, and interruptions to utilities.

Separate garage entries

We want to keep separate garage entries into the kitchen and mudroom. Please flag any difference between this request and the drawings before pricing.

Reused appliances in the ADU

The plans call for reusing existing appliances in the ADU. Please identify the removal, protection, relocation and installation work included in your proposal.

Pool may be a separate contractor

The pool may be handled by a separate contractor. Please state whether you can provide pool construction or coordinate with a pool contractor.

What to Include in Your Proposal

Please provide a written proposal that clearly identifies

The plans used

Include the drawing date and revision number.

Your price

State whether it is a fixed price or a preliminary estimate, how long it is valid, and whether applicable taxes are included.

A cost breakdown

Separate demolition and site work, foundation, framing, exterior work, plumbing, electrical, heating and cooling, interior finishes, and outdoor work.

Materials and allowances

Identify the products or spending allowances included for cabinets, countertops, flooring, windows, doors and fixtures. Explain whether each allowance includes installation.

Exclusions and owner purchases

List everything we must purchase or pay for separately.

Engineering and permits

Explain what is included, who handles applications and inspections, and whether pending engineering could affect your price.

Schedule

Include your earliest available start date, expected construction time, and major project stages.

Payments and changes

Provide a payment schedule and explain how additional work would be priced and approved.

Company information

Include your applicable license and registration numbers, insurance information, warranty, and references for similar projects.

Please list assumptions and unanswered questions rather than leaving them out of the proposal.