Home additions built to look like they were always there.
Bedroom additions, second stories, garage conversions, and in-law suites across Albany County and the Capital Region. Fixed-price contracts, engineered drawings where required, and full permit service — including the parts most contractors leave you to sort out.
Written fixed-price estimate within 3 business days
Mon–Fri 8AM–5PM · Sat by appointment
Addition types and real Capital Region ranges
These are ranges from actual local projects, not national averages that ignore what labour and materials cost here. The spread within each comes down to finish level, structural complexity, and how far MEP systems have to be extended.
Bedroom addition
Our most common request. A first-floor primary suite or additional bedroom with closet, typically 400–600 sq ft.
$80k–$140kFamily room addition
Open-plan living space off the rear of the house. Often vaulted, with large glazing for light.
$90k–$160kSecond story
Full or partial floor above the existing first storey. Requires structural engineering to assess what the existing walls can carry.
$175k–$350kGarage conversion
Attached garage converted to conditioned living space. The most cost-effective addition type — the foundation and roof already exist.
$45k–$90kIn-law suite / ADU
Self-contained unit with bedroom, bathroom, and kitchenette. Needs separate egress and usually a dedicated electrical sub-panel.
Scope-dependentSunroom or porch
Glass-heavy addition off the rear or side, built to three-season or fully insulated four-season spec.
$35k–$80kYou get a line-item written proposal — not a “starting at” figure — so you can see exactly what drives the number before committing.
Three things that decide whether you can build at all
Most addition projects that fall apart do so here, not during construction. We check all three at the first visit, before you spend anything on design.
Setbacks
Every municipality sets minimum distances from your side and rear property lines. If the addition you want crosses one, you need a variance from the zoning board — which takes months and is not guaranteed. On narrow Albany city lots this is frequently the binding constraint.
Lot coverage
Most codes cap what percentage of your lot can be covered by structure. Adding footprint can push you over even when setbacks are fine. Building up rather than out is sometimes the only route.
What the existing structure carries
A second storey depends on whether existing walls and foundation can take the load. That is an engineering question, answered before design — not a hopeful assumption discovered during framing.
Making it look like it belongs
The most common complaint we hear about other people’s additions is that it does not look like part of the house. That happens when the roof pitch, siding, trim profile, window style, or foundation height does not match the existing structure.
We specify addition materials to match, or to deliberately contrast — never to accidentally mismatch. On vinyl-sided ranches in Colonie and Guilderland, matching siding is usually straightforward. On older brick colonials in Albany’s Pine Hills, matching brick colour and coursing means sourcing salvage or choosing a considered contrast material instead.
Roofline integration is the most critical and most overlooked element. A shed roof reads as an afterthought. A properly matched gable or hip makes the addition look original. We detail this during design and show you the roofline profile before a single stud goes up.
Survey to certificate of occupancy
Design consultation and as-built survey
Free. We scan the existing structure and produce dimensioned as-built drawings before any design decisions get made — because an addition designed against inaccurate existing conditions goes wrong at framing.
Free 3D scan with every estimate →Structural engineering
We manage this. You are not sourcing an engineer separately, and the engineering cost sits inside the project estimate rather than arriving as a surprise professional fee.
Permit application and review
We file with your municipality and handle the review process. Albany, Colonie, and Guilderland typically take 3–6 weeks for plan review on addition permits.
3–6 weeks reviewFoundation and framing
Footing excavation to below the 48-inch Albany frost line, concrete, sill plates, wall framing, and roof tie-in to the existing structure.
MEP rough-in
Electrical, plumbing, and HVAC extended into the new space and properly coordinated with what is already there. Undersized existing systems get flagged at estimate, not at inspection.
Insulation, blower door, drywall, finish
Insulation to New York energy code with a blower door test, then drywall, flooring, and trim matched to existing interior profiles where possible.
Final inspections and CO
Footing, framing, rough MEP, insulation, and final — we schedule and manage all of them through close-out and certificate of occupancy.
What homeowners ask us first
Will my property taxes go up?
Almost certainly, yes. Adding finished square footage changes your assessment, and the building permit is what tells the assessor the work happened. Anyone who tells you otherwise is either misinformed or suggesting you build without a permit.
How much depends on your municipality’s assessment ratio and tax rate, so your assessor’s office is the right place to ask for a real number. It is worth doing that arithmetic before you commit — and worth weighing against the value the space adds.
Can we live in the house during construction?
Usually yes, for an addition — that is one of the advantages over a whole-house renovation. The new structure gets built largely outside the existing envelope, and we keep the two separated until the tie-in.
The disruptive stretch is when we open the existing wall to connect the spaces. That is typically days rather than weeks, and we schedule it with you.
Do I need an architect?
Not always. For a straightforward bedroom addition with a defined footprint, we can produce schematic drawings in-house. More complex work — second storeys, anything with significant structural modification — needs stamped drawings from a licensed architect or structural engineer.
We will tell you which category you are in at the first visit, and we coordinate the professional either way.
What if my lot is too small?
Then the options are building up instead of out, reducing the footprint, or applying for a variance. Variances go before the zoning board of appeals, take months, and are not guaranteed.
We check setbacks and lot coverage at the first visit specifically so you find this out before spending money on design.
How do people pay for an addition?
Most commonly a home equity line, a cash-out refinance, or a renovation loan that lends against the post-improvement value. We are contractors rather than lenders and do not offer financing, but we can provide the itemised scope and drawings a lender will ask for.
Speak to your bank or credit union before design, since what you can borrow often shapes the scope.
Can you build in winter?
Foundation work is the constraint — footings need to go below the 48-inch frost line, and pouring concrete in deep cold requires additives, blankets, or heated enclosures, all of which add cost.
Once the shell is closed in, interior work continues through winter normally. Scheduling foundation work for autumn so the interior runs through the cold months is often the efficient sequence.
How long from first call to moving in?
Bedroom additions typically run 10–14 weeks from permit approval; second-storey projects 16–24 weeks. Design and permit review sit ahead of that — budget another 6–10 weeks.
You get a project schedule at contract signing so you know what is happening each week.
Zoning, setback, lot coverage, and assessment rules vary by municipality and change over time. Everything above reflects our experience building in Albany County and the surrounding Capital Region, but confirm specifics with your building department and assessor for your property. Last reviewed August 2026.
Where we build additions
Albany · Colonie · Guilderland · Bethlehem · Cohoes · Watervliet · Clifton Park · Halfmoon · Troy · Saratoga Springs · Schenectady · Niskayuna · Latham · Delmar · East Greenbush · Ballston Spa · Malta
What clients say
Craig and his crew were great to deal with! Good communication and great work. Quick, efficient, and professional — I’d highly recommend them!
Connor was so helpful, kind and thorough! Cannot recommend their services enough, we will certainly be using them again!
I chose Clifton Development Group after 2 other estimates and they did not disappoint! If you are looking for work done with precision and at a good price, certainly give them a call!
Free in-home estimate
Tell us what you want to add.
We visit, measure and scan the existing conditions, check setbacks and lot coverage, and give you a written fixed-price estimate within 3 business days. No obligation, and the as-built drawings are yours either way.
Mon–Fri 8AM–5PM · Sat by appointment