Basement renovations

Create space for guests, work, or relaxing—while addressing the moisture, lighting, and layout needs of your lower level.

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Make more of the space you have

A basement can become a comfortable extension of your home. We plan the layout and finishes around your needs, with attention to keeping the space warm, dry, and usable.

Basement renovation services

At APD Boston, we offer complete basement finishing and renovation solutions tailored to your needs:

Unfinished basement with exposed joists and block walls

Basement Finishing

From framing and insulation to drywall, flooring, and lighting—we handle every step to transform your unfinished basement into a livable, inviting space.

Finished basement sitting area with a wall-mounted TV and white shelves

Home Theaters & Entertainment Rooms

Custom soundproofing, ambient lighting, and comfortable seating for the ultimate movie-night or game-day experience.

Open wood staircase with black railings leading to a finished basement

Guest Suites & Rental Units

Add value to your property with a private in-law suite or a fully equipped rental apartment. We ensure compliance with local codes while creating stylish, functional layouts.

Basement exercise area with yoga mats and weights

Home Gyms & Offices

Whether you need a dedicated workout space or a quiet home office, we design and build rooms that match your lifestyle.

Finished basement with a brick fireplace, white columns and wood-look flooring

Waterproofing & Mold Prevention

Protect your investment with advanced drainage, sealing, and ventilation solutions that keep your basement dry, healthy, and safe.

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Finished basement spaces

Start with what you want your basement to make possible.

Space to live

  • Bedrooms and guest suites
  • Rental apartments
  • Bathrooms, from practical additions to spa features

Space to unwind

  • Game rooms and home theaters
  • Wet bars and entertainment areas
  • Fireplaces, wine storage, and custom built-ins

Space for your routine

  • Home offices and hobby rooms
  • Workout rooms
  • Playrooms and craft spaces

Start with a dry foundation. Sump pumps, French drains, sealing, and ventilation help protect the space before finishes go in.

Browse finished basement living areas, kitchenettes, and a bedroom.

Basement kitchen and living area with white cabinets and gray flooring
Open basement kitchen and sitting area with white cabinets and dark counters
White basement kitchen with dark counters, an island and a dining table
Open basement living and dining room beside a white kitchen
Empty finished basement with a brick fireplace and wood-look flooring
Basement sitting area with a white sofa and brick fireplace
White-walled basement with wood-look flooring and a brick fireplace
Wide view of a finished basement with white columns and a brick fireplace
Basement kitchen with white cabinets, exposed wood beams and brick columns
White kitchen cabinets and stainless steel appliances beneath exposed wood beams
Basement kitchen and laundry appliances beside a wood staircase
Open basement with exposed wood beams, brickwork and a wood staircase
Wood staircase beside a brick wall in a finished basement
White basement kitchen beneath wood beams between brick columns
Wood staircase beside an exposed brick wall and pendant light
Upward view of wood stairs, railings, brickwork and ceiling beams
Basement living room with blue chairs, a white sofa and brick fireplace
Basement seating area facing a TV and white built-in shelves
Basement bedroom with a gray upholstered bed and bedside lamps

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What to expect from our team

Local knowledge
Licensed and insured contractors familiar with Cambridge homes, building codes, and permits.
Designed for your needs
Layouts shaped around your lifestyle, with energy-efficient finishing and waterproofing options.
Care in the details
Attention to craftsmanship and materials chosen for lasting use.

From design to the final inspection

Four stages help you understand what comes next:

  1. Consultation & Design

    We assess your space, discuss your goals, and create a customized layout.

  2. Permits & Planning

    Our team manages permits and ensures compliance with Cambridge building codes.

  3. Construction & Finishing

    From framing to flooring, we deliver careful construction with quality materials.

  4. Final Inspection

    Every project is carefully reviewed to ensure it meets our high standards before completion.

What could your basement become?

Tell us how you’d like to use the space. We’ll discuss the layout, existing conditions, and next steps with you.

Serving Cambridge, Boston, Newton, Brookline, Arlington, Belmont, Waltham, Lexington, and the wider Greater Boston area.

Call (617) 312-1267
Request a free consultation