The most reliable method for rough cost estimating of concrete foundation and slab work is to contact a local concrete contractor – one who specializes in this work.

1. HOW TO ESTIMATE
GARAGE BUILDING
COSTS… By:- Jay Behm

2. Most Frequent
Question
Knowing the current cost to build a house before you
build or renovate home/garage can help you modify
your plans to meet your budget.
How much does it cost to build/renovate a home or garage?

3. BASIC GARAGE COST ESTIMATION
Square foot area
(footprint area) of
the one story
garage you plan to
build.
Average per
square foot
construction
cost of $30 to
$40
Average Cost: $17,000 to $23,000. (for
a 24 foot square one story basic garage)
This method is useful when projecting development costs
for building or improving residential properties with gross
cost factors.

4. COST VARIATION
Cost will be less if you perform work yourself or use below
average quality materials or live in an area with low cost of living.
Cost will be more if you build with higher than average
quality building materials or live in an area with high cost of
living.

5. Project Specific Garage Rough Cost Estimate:
Rough or Range of Cost
 A few phone calls
Acquire the garage plans
and permitting information.
Total Rough Costs: Foundation/Slab costs + Materials Costs + Building Costs

6. Ask for more detailed estimates or
bids from project participants.
!!! If you plan to have the
garage built by a general
contractor, they will
normally do all of the
administrative work to
prepare a formal bid or
contract proposal.

7. The most reliable
method for rough cost
estimating of concrete
foundation and slab
work is to contact a
local concrete
contractor – one who
specializes in this
work.
FOUNDATION/SLABCOST
Listed in the phone book
yellow pages under “concrete”

8. General contractors use them for building their project concrete work.
Describe the footprint size of the garage and any unusual features, as
well as the conditions at the building site
Give you a “ballpark” or range of cost for the work & that is without doing a detailed estimate.

9. To get free materials list for
any Behm Design garage plan
contact Jay
The materials list provided by Behm Design is basic list, including most materials.
Not included are some flashings, fasteners, finishing materials like paint, stain, sealants, and
electrical/mechanical.
Roofing and applied siding are simply called out as sq. ft. of surface area covered.
Materials Costs

10. Building Costs
Generally, for conventional light frame
construction, the labor cost will average
between 1.5x and 2x the estimated materials
costs.
This number is more difficult to get as a rough
quote because of many variables…so, just use
this factor for now

11. Additional Rough Costs
Driveway $_______________
Sidewalks $_______________
Electrical $_______________
Plumbing/Drainage $________
HVAC $_________________
Permits, Fees $____________
Project Management Fees: $___
Unusual Site Grading/Preparation:
$___
Contact local building dept. or
inspector to check required fees for
permits, etc
Contact local businesses or installers to discuss
specific item costs for additional aspects.

12. Contact Us:
Located at 101 Peyton Road,
Williamsburg, VA 23185
Phone: (757) 229-9898
E-mail Id:- jayb@behmdesign.com
For ready to use Garage Plans or blue print at
www.behmdesign.com