How I helped a Salem couple decide whether combining two condos into one home was worth it
Two owners wanted to join two units into one single-level home. The complex had never sold anything above the mid-$600Ks. Here's how we valued something with no direct comparable, and what we told them not to cut.
The deal, in six lines.
- Client
- Owners of two adjoining units in a 1980s Salem condominium community
- Situation
- Planning to combine both units into one home and wanted to know what it would be worth before spending on the renovation
- Location
- Salem, MA (near the Swampscott line)
- Property
- Two units combined into about 2,750 sq ft on one level, 5 bedrooms, 4 baths, 2 garage and 2 outdoor spaces
- Timeline
- Site visit and analysis in January 2026; renovation substantially complete by September 2026
- Result
- After-renovation value range of $1.15M to $1.25M in a complex whose sales had topped out in the mid-$600Ks; they went ahead with the plan
Most renovation questions I get are simple: will a new kitchen pay for itself? This one wasn't. Two owners in a Salem condominium community owned adjoining units and wanted to open them into a single home: one level, five bedrooms, four baths, with a private wing that could work for guests, live-in help, or an aging parent.
Their question was fair: if we spend the money to build this, what is it actually worth? The complicated part was that nothing like it had ever sold in the complex, or anywhere nearby.
Why was this hard to value?
Because the obvious comps pointed the wrong way.
Units in that community had historically sold up to about the mid-$600Ks. A neighboring unit had recently sold for about $419 per square foot. If you only looked inside the complex, you'd conclude the project was an over-improvement and stop there.
But the finished product wasn't going to be "a bigger version of the unit next door." It was going to be a 2,750-square-foot, single-level home with two garage spaces. That's a different product, and it has different buyers. Pricing it off the building alone would have been as wrong as pricing it off a Marblehead single-family.
How did we value something with no direct comparable?
We triangulated. Three questions, three sets of data:
- What does the building say? The neighboring sale at about $419 per square foot, applied to 2,750 square feet, pointed to roughly $1.15M before any premium for high-end finishes.
- What does Salem say? Salem condos sold over the prior six months averaged about $432 per square foot. That pointed to roughly $1.19M on the same footage, again before finishes.
- Do buyers exist at that price? Yes. Recent $1M-plus condo sales in Salem, mostly in North Salem along the river, were about half the size with one garage space each, and still traded around $775 per square foot. In Swampscott, large-format condos and five-bedroom sales had cleared $1M.
We also looked at the opposite end. Salem condos with four or more bedrooms were mostly fixer-quality and traded around $324 per square foot. There was effectively no move-in-ready, large, single-level condo inventory on the North Shore at the time. Statewide, we found only a handful of condos for sale with two garage spaces and a similar layout and size, and none on the North Shore.
Put together, the after-renovation value range came out at $1.15M to $1.25M. That's an opinion of market value, not an appraisal, and we said so. An appraiser working without direct comps may land more conservatively. The market value to the right buyer is what we were measuring.
What did we tell them to keep, and what to cut?
This is where the analysis earned its keep. The goal wasn't just a number. It was making sure the money went where buyers would pay for it.
Keep:
- The layout. Separating the sleeping wing from the living and entertaining wing is the whole point of the project, and it's exactly what supports the price.
- The second, smaller kitchen. This was the most important advice in the report. Keeping a code-compliant kitchenette means that wing stays a legally habitable unit. That protects two exits: selling it as one home with an in-law wing, or separating it back into two units later. Cut it, and you lose the second option forever.
- Continuous hardwood. Without it, the space reads as two condos stitched together instead of one home.
Watch:
- Lighting. They planned around 50 recessed lights, which can run $8,000 to $10,000 or more installed. Buyers expect recessed lighting; they don't pay extra for a lighting showcase. That money is better spent on the things people touch: counters, vanities, hardware.
Avoid:
- Moving plumbing and gas lines where it isn't necessary. It's expensive and invisible to a buyer.
- Ultra-personal materials. Buyers pay for clean, modern finishes. They don't pay for someone else's artistic taste.
- Removing bedrooms. Turning two bedrooms into one oversized suite is one of the fastest ways to lose value.
What happened next?
They went ahead with the renovation as planned. By September 2026 the home was essentially finished: the kitchen had been moved to use newer cabinets, tile gave way to hardwood, the primary suite gained a dressing room, and only three minor punch-list items remained. The owners told us their total renovation spend landed around $350,000.
They built it to live in, not to flip, and that matters. The analysis wasn't there to talk them into or out of anything. It was there so they could make a six-figure decision knowing where the value was and where the risk was.
What should someone else in this situation know?
- An "over-improvement" depends on who the buyer is. A project can be an over-improvement for its building and still be rational for its market, if the buyer pool for the finished product exists.
- Protect your exit strategy before you protect your budget. The cheapest line item to cut, the second kitchen, would have been the most expensive mistake.
- Appraisal and market value aren't the same thing on a one-of-one property. If you ever sell, expect to support the price with more than the complex's own sales.
- Get the analysis before the contractor's deposit. It's far cheaper to change a plan than a finished room.
Questions people actually ask.
Can you combine two condo units in Massachusetts?
Often, yes, but it depends on the condominium's master deed and bylaws, the association's approval, and local building permits. Some combinations also change how the units are deeded. Talk to the association and a real estate attorney before you design anything.
Will combining two condos increase the value?
It can, if the finished home fills a gap in the market. Here, single-level space of that size didn't exist in Salem. If the combined unit is just a larger version of what already sells nearby, you may not get back what you spend.
What is regression in real estate?
Regression is when lower-priced homes around a property pull its value down, because an appraiser can't find sales high enough to support the price. It's the main risk when you improve a property well beyond its neighbors.
How do you value a home with no comparable sales?
You combine sources: the closest sales in the building or street, price per square foot across the town, and proof that buyers are paying similar prices for similar features somewhere nearby. Then you state the result as a range, not a single number.
Client details are shared in general terms to protect their privacy. Prices and dates come from the transaction file and public MLS records. Past results don't predict the outcome of a different property, market, or timeline.